feat: new styles

Cargo.lock

@@ -583,6 +583,15 @@ dependencies = [
  "wayland-client",
 ]
 
+[[package]]
+name = "castaway"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dec551ab6e7578819132c713a93c022a05d60159dc86e7a7050223577484c55a"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "cc"
 version = "1.2.62"
@@ -742,6 +751,20 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "compact_str"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fd622ebbb56a5b2ccb651b32b911cdeb2a9b4b11776b2473bf26a26a286244e"
+dependencies = [
+ "castaway",
+ "cfg-if",
+ "itoa",
+ "rustversion",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "concurrent-queue"
 version = "2.5.0"
@@ -1454,11 +1477,13 @@ dependencies = [
  "chrono",
  "clap",
  "colored",
+ "compact_str",
  "glt",
  "iced",
  "indicatif",
  "regex",
  "rhai",
+ "rustc-hash 2.1.2",
 ]
 
 [[package]]
@@ -1475,7 +1500,7 @@ dependencies = [
 
 [[package]]
 name = "glt"
-version = "0.1.3"
+version = "0.1.4"
 
 [[package]]
 name = "glutin_wgl_sys"
@@ -3488,6 +3513,12 @@ dependencies = [
  "unicode-script",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"

Cargo.toml

@@ -7,8 +7,10 @@ edition = "2024"
 glt = { path = "../glt" }
 regex = "1.10"
 clap = { version = "4.5", features = ["derive"] }
-iced = { version = "0.14.0", features = ["tokio", "image", "svg"] }
+iced = { version = "0.14.0", features = ["tokio", "image", "svg", "advanced"] }
 colored = "2"
 indicatif = "0.17"
 rhai = "1.17.1"
+rustc-hash = "2"
 chrono = "0.4.44"
+compact_str = "0.8"

STYLE-SYSTEM-COMPLETION-PLAN.md

@@ -0,0 +1,570 @@
+# План завершения стилевой системы Glint
+
+## Цель
+
+Достичь полной мощности HTML+CSS в языке Glint. Система разделена на 4 уровня:
+- **Парсер** (glt/src/style_parser.rs) — чтение `.glts`
+- **AST + Компилятор** (glt/src/ast.rs, compiler.rs) — представление и байткод
+- **Интерпретатор** (runtime/src/interpreter/) — VDOM + вычисление стилей
+- **Рендерер** (runtime/src/renderer.rs) — отрисовка через Iced
+
+---
+
+## 1. Селекторы (критично)
+
+### 1.1 Структурированное представление селектора
+
+**Сейчас:** Селектор — плоская строка `"Panel.desktop"`, matching по точному совпадению.
+
+**Нужно:** Разобрать селектор в структуру:
+
+```rust
+enum Selector {
+    Simple(SimpleSelector),
+    Compound(CompoundSelector),     // без комбинатора
+    Complex {
+        left: Box<Selector>,
+        combinator: Combinator,
+        right: Box<Selector>,
+    },
+    List(Vec<Selector>),            // запятые: `Button, .btn, #id`
+}
+
+struct SimpleSelector {
+    tag: Option<String>,            // `Button` | `*`
+    id: Option<String>,             // `#myid`
+    classes: Vec<String>,           // `.foo.bar`
+    pseudo_classes: Vec<PseudoClass>, // `:hover`
+    pseudo_element: Option<PseudoElement>, // `::before`
+    attribute: Vec<AttributeSelector>, // `[disabled]`, `[type="text"]`
+}
+
+enum Combinator {
+    Descendant,   // пробел
+    Child,        // >
+    NextSibling,  // +
+    Subsequent,   // ~
+}
+
+enum PseudoClass {
+    Hover, Active, Focus,
+    FirstChild, LastChild,
+    NthChild(i32, i32),  // An+B
+    FirstOfType, LastOfType,
+    Disabled, Enabled, Checked,
+    Root, Empty,
+    Not(Box<Selector>),
+    // ...
+}
+
+struct AttributeSelector {
+    name: String,
+    op: AttrOp,
+    value: Option<String>,
+}
+
+enum AttrOp { Set, Eq, Contain, StartsWith, EndsWith, InList }
+```
+
+### 1.2 Парсинг селекторов (style_parser.rs)
+
+- Заменить `parse_selector()` на полноценный парсер селекторов.
+- Поддержка: `Button.active:hover`, `Panel > .btn`, `#header`, `[type="text"]`, `*`, `:nth-child(2n+1)`, запятые.
+- Валидация и сообщения об ошибках.
+
+### 1.3 Байткод для селекторов
+
+- Новый опкод `OP_SELECTOR` или расширение `OP_STYLE_RULE`:
+  - Записать дерево селектора в байткод.
+  - На каждый тип узла — свой подопкод (0x30–0x3F).
+- Компилятор: сериализация структуры селектора.
+- Читатель (reader.rs): десериализация обратно в структуру.
+
+### 1.4 Runtime matching (interpreter/mod.rs)
+
+- Заменить `collect_matching_styles()` на алгоритм обхода дерева селекторов.
+- **Специфичность:** inline > id > class/attr/pseudo > tag.
+- При одинаковой специфичности — порядок объявления (последний побеждает).
+- **Комбинаторы:** при обходе VDOM подниматься вверх по предкам/соседям.
+- Кэширование результатов matching для производительности.
+
+---
+
+## 2. Псевдоклассы (высокий приоритет)
+
+### 2.1 Интерактивные (`:hover`, `:active`, `:focus`)
+
+**Сейчас:** Только у Button ховер/нажатие — хардкод в renderer.
+
+**Нужно:**
+- Хранить состояние интерактивности в VDOM/Element (`ElementState`).
+- В renderer передавать статус (hovered/pressed/focused) в `collect_matching_styles`.
+- `:hover`-стили переопределяют базовые.
+- Плавный переход между состояниями (см. transitions).
+
+**Изменения:**
+- `types.rs`: `Element` может получить поле `state: ElementState`.
+- `renderer.rs`: у `render_element` появляется доступ к состоянию мыши.
+- `style.rs`: `ComputedStyle::compute()` принимает псевдоклассы.
+
+### 2.2 Структурные (`:first-child`, `:nth-child`, `:last-child`, `:first-of-type`, `:last-of-type`, `:empty`, `:root`)
+
+**Сейчас:** Не поддерживаются.
+
+**Нужно:**
+- При matching вычислять позицию элемента среди siblings.
+- Для `:nth-child(An+B)` — парсить выражение и проверять `(index - B) % A == 0`.
+- `:empty` — `el.children.is_empty()`.
+- `:root` — элемент верхнего уровня в VDOM.
+
+### 2.3 Состояния (`:disabled`, `:enabled`, `:checked`)
+
+- `:disabled`/`:enabled` — по свойству `disabled`.
+- `:checked` — по свойству `checked`.
+
+---
+
+## 3. Медиа-запросы (`@media`) (средний приоритет)
+
+### 3.1 Парсер
+
+```glts
+@media (max-width: 600px) {
+    Panel { direction: vertical }
+}
+```
+
+- Парсить `@media` в `Directive::MediaQuery { query, child_span }`.
+- Поддержка: `width`, `height`, `min-width`, `max-width`, `orientation`, `prefers-color-scheme`.
+- Логические операторы: `and`, `or`, `not`, `,` (or).
+
+### 3.2 Runtime
+
+- Собрать информацию об окне (размер, тема ОС).
+- При изменении размера окна переоценивать media queries.
+- Хранить в `Document::media_state: MediaState`.
+- `collect_matching_styles` проверяет media query перед добавлением правил.
+
+---
+
+## 4. Анимации (`@anim`) (средний приоритет)
+
+### 4.1 Парсинг — уже есть
+
+`@anim name { from { ... } to { ... } }` — парсится и компилируется.
+
+### 4.2 Runtime — НЕ реализован
+
+**Сейчас:** `OP_STYLE_ANIM` пропускается.
+
+**Нужно:**
+1. Хранить `KeyframeAnimation` в `StyleSheet` (не только в байткоде, но и в runtime-структуре).
+2. В `Element` поле `animation_state: HashMap<String, AnimationInstance>`.
+3. Система тиков:
+   - Iced `subscription` на каждый кадр (`on_every_event` → `Event::Window(RedrawRequested)`).
+   - При каждом тике обновлять `elapsed` для активных анимаций.
+   - Интерполировать между keyframes.
+4. Свойства `animation-name`, `animation-duration`, `animation-timing-function`, `animation-delay`, `animation-iteration-count`, `animation-fill-mode`.
+5. Поддержка `@keyframes` с процентами: `0% { ... } 50% { ... } 100% { ... }`.
+
+### 4.3 Timing functions
+
+- `linear`, `ease`, `ease-in`, `ease-out`, `ease-in-out`.
+- `cubic-bezier(p1x, p1y, p2x, p2y)`.
+- `steps(n, direction)`.
+
+---
+
+## 5. Транзишены (`transition`) (средний приоритет)
+
+### 5.1 Свойства
+
+- `transition-property`, `transition-duration`, `transition-timing-function`, `transition-delay`.
+- Шорткат `transition: all 0.3s ease`.
+
+### 5.2 Runtime
+
+- При изменении `ComputedStyle` (например, при ховере) не применять мгновенно, а запускать интерполяцию.
+- Хранить `TransitionState` на элемент: `HashMap<String, (start_value, end_value, elapsed, duration, easing)>`.
+- Каждый кадр обновлять transitioning-свойства.
+
+---
+
+## 6. Новые CSS-свойства в ComputedStyle
+
+### 6.1 Типографика
+
+| Свойство | Тип | Парсер |
+|----------|-----|--------|
+| `font-family` | `Option<String>` | список шрифтов |
+| `font-weight` | `Option<u16>` | `normal(400)`, `bold(700)`, числовое |
+| `font-style` | `Option<FontStyle>` | `normal`, `italic`, `oblique` |
+| `line-height` | `Option<f32>` | числовое или `normal` |
+| `letter-spacing` | `Option<f32>` | px |
+| `text-align` | `Option<TextAlign>` | `left`, `center`, `right`, `justify` |
+| `text-decoration` | `Option<TextDecoration>` | `none`, `underline`, `line-through` |
+| `text-transform` | `Option<TextTransform>` | `none`, `uppercase`, `lowercase`, `capitalize` |
+| `white-space` | `Option<WhiteSpace>` | `normal`, `nowrap`, `pre` |
+| `word-break` | `Option<WordBreak>` | `normal`, `break-all`, `keep-all` |
+| `text-overflow` | `Option<TextOverflow>` | `clip`, `ellipsis` |
+
+### 6.2 Фон и границы
+
+| Свойство | Тип | Парсер |
+|----------|-----|--------|
+| `opacity` | `Option<f32>` | 0.0–1.0 |
+| `background-image` | `Option<String>` | `url(...)` |
+| `background-repeat` | `Option<BgRepeat>` | `repeat`, `no-repeat` |
+| `background-size` | `Option<BgSize>` | `cover`, `contain`, px, % |
+| `background-position` | `Option<BgPos>` | `center`, `top left`, px |
+| `linear-gradient(...)` | `Option<Gradient>` | парсить в `Value::Call` и обрабатывать |
+| `box-shadow` | `Option<Vec<Shadow>>` | `offset-x offset-y blur spread color` |
+| `text-shadow` | `Option<Vec<Shadow>>` | то же |
+| `outline` | `Option<Outline>` | width, style, color |
+| `border-style` | `Option<BorderStyle>` | `solid`, `dashed`, `dotted` |
+| `border` (шорткат) | — | разворачивать в width/style/color |
+
+### 6.3 Flexbox (расширение)
+
+| Свойство | Тип |
+|----------|-----|
+| `justify-content` | `Option<JustifyContent>` | `start`, `center`, `end`, `space-between`, `space-around`, `space-evenly` |
+| `flex-wrap` | `Option<FlexWrap>` | `nowrap`, `wrap`, `wrap-reverse` |
+| `flex-direction` | `Option<FlexDirection>` | (расширение `LayoutDirection`) |
+| `align-self` | `Option<Alignment>` | переопределяет `align-items` для конкретного элемента |
+| `align-content` | `Option<AlignContent>` | multi-line выравнивание |
+| `flex` (шорткат) | — | grow, shrink, basis |
+| `flex-shrink` | `Option<f32>` | |
+| `flex-basis` | `Option<Length>` | |
+
+### 6.4 Grid Layout
+
+| Свойство | Тип |
+|----------|-----|
+| `grid-template-columns` | `Option<Vec<GridTrack>>` | `1fr 1fr`, `repeat(3, 1fr)`, `auto` |
+| `grid-template-rows` | `Option<Vec<GridTrack>>` | |
+| `grid-gap` / `gap` | уже есть как `spacing` | |
+| `grid-column` | `Option<(u32, u32)>` | start / end |
+| `grid-row` | `Option<(u32, u32)>` | |
+| `grid-auto-flow` | `Option<GridFlow>` | |
+
+### 6.5 Позиционирование (расширение)
+
+| Свойство | Тип | Статус |
+|----------|-----|--------|
+| `position: absolute` | — | сейчас мэппится в Static |
+| `position: relative` | — | сейчас мэппится в Static |
+| `position: sticky` | — | сейчас мэппится в Static |
+| `z-index` | `Option<i32>` | |
+| `display` | `Option<Display>` | `block`, `flex`, `grid`, `none`, `inline` |
+
+### 6.6 Прочее
+
+| Свойство | Тип |
+|----------|-----|
+| `visibility` | `Option<Visibility>` | `visible`, `hidden` |
+| `cursor` | `Option<Cursor>` | `pointer`, `default`, `text` |
+| `pointer-events` | `Option<PointerEvents>` | `auto`, `none` |
+| `transform` | `Option<Vec<Transform>>` | `translate(x,y)`, `scale(s)`, `rotate(a)` |
+| `transform-origin` | `Option<String>` | |
+| `backdrop-filter` | `Option<Vec<Filter>>` | `blur(10px)`, `brightness(1.2)` |
+| `filter` | `Option<Vec<Filter>>` | то же |
+| `list-style` | `Option<ListStyle>` | |
+| `isolation` | `Option<Isolation>` | `auto`, `isolate` |
+| `mix-blend-mode` | `Option<BlendMode>` | `multiply`, `screen` |
+
+### 6.7 Итого: ~40–60 новых полей в ComputedStyle
+
+Каждое поле: тип `Option<T>`, значение по умолчанию `None`.
+Парсинг: новая функция `parse_<property>(s: &str) -> Option<T>` для каждого.
+Lookup в `ComputedStyle::compute()`.
+
+**Рендеринг в Iced:**
+- Iced 0.14 поддерживает Background::Gradient.
+- Box-shadow пока не поддерживается, но можно эмулировать через container style с offset-тенью.
+- Transforms и filters — Iced пока не нативно; нужен кастомный widget или пропуск.
+
+---
+
+## 7. Система каскада и наследования
+
+### 7.1 Наследование (сейчас: только `color`, `font-size`)
+
+Добавить наследование для:
+- `font-family`, `font-weight`, `font-style`, `line-height`, `letter-spacing`, `text-align`, `white-space`, `word-break`, `text-transform`, `visibility`, `cursor`, `pointer-events`.
+
+Механизм: в `render_element()` передавать не только `parent_color` и `parent_font_size`, а `&ComputedStyle` родителя или отдельный `InheritedStyle`.
+
+### 7.2 `inherit` / `initial` / `unset`
+
+- Специальные значения для любого свойства.
+
+### 7.3 `!important`
+
+- Флаг важности в правиле. Переопределяет специфичность.
+- Парсить `value!important`.
+
+---
+
+## 8. CSS-функции и значения
+
+### 8.1 `calc()`
+
+```rust
+enum CalcValue {
+    Number(f32),
+    Percentage(f32),
+    Add(Box<CalcValue>, Box<CalcValue>),
+    Sub(Box<CalcValue>, Box<CalcValue>),
+    Mul(Box<CalcValue>, Box<CalcValue>),
+    Div(Box<CalcValue>, Box<CalcValue>),
+    Var(String),
+}
+```
+
+- Парсить `calc(100% - 20px)`.
+- Вычислять в runtime с учётом контекста (размер родителя).
+
+### 8.2 `var()` — CSS custom properties
+
+- `--my-var: value;` в правилах.
+- `var(--my-var, fallback)` при использовании.
+- Хранить custom properties в `ComputedStyle.custom_props: HashMap<String, String>`.
+- Наследуются по умолчанию.
+
+### 8.3 `min()`, `max()`, `clamp()`
+
+- `min(100%, 500px)`, `max(200px, 50%)`, `clamp(200px, 50%, 500px)`.
+
+### 8.4 `rgb()`, `rgba()`, `hsl()`, `hsla()`, `hwb()`, `oklch()`, `color-mix()`
+
+- Сейчас только `#hex` и 3 named colors.
+- Парсить `rgb(255, 0, 0)`, `rgba(255, 0, 0, 0.5)`.
+- Расширить `parse_color()`.
+
+### 8.5 Named colors
+
+- Расширить словарь до 140+ CSS named colors (AliceBlue, ...).
+
+---
+
+## 9. @-правила
+
+### 9.1 `@import`
+
+```glts
+@import "theme.glts"
+```
+
+- В парсере: обработать `@import`, загрузить файл, влить переменные и миксины.
+- Может быть сложным (циклы, кэширование). Опционально на раннем этапе.
+
+### 9.2 `@font-face`
+
+```glts
+@font-face {
+    font-family: "MyFont"
+    src: fs:/fonts/myfont.ttf
+}
+```
+
+- Регистрировать в Iced через `font::Family`.
+- Потребует `iced::font::load()`.
+
+### 9.3 `@scope` (CSS Cascading Layers)
+
+- `@scope (.card) { ... }` — ограничение области действия правил.
+
+---
+
+## 10. Рендеринг (renderer.rs)
+
+### 10.1 Псевдоклассы в рендере
+
+- Для интерактивных элементов передавать `button::Status`.
+- `:hover`/`:active`-стили должны пересчитываться при изменении статуса.
+
+### 10.2 Flexbox (полноценный)
+
+- `justify-content`: Iced `Row`/`Column` не имеют нативного justifyContent; эмулировать через наполнители (`Length::Fill`).
+- `flex-wrap`: нужен `Flow` widget или эмуляция строками.
+
+### 10.3 Grid
+
+- Полноценный CSS Grid: имплементировать кастомный Iced widget или разбивать на строки/колонки вручную.
+- `grid-template-columns: 1fr 1fr 1fr` → разбивка children на ряды.
+- `grid-column`/`grid-row`: позиционирование ячеек.
+
+### 10.4 `display: none`
+
+- Пропускать элемент при рендеринге (уже частично — `None` возвращается).
+
+### 10.5 `z-index`
+
+- Сортировать fixed-слой по z-index внутри stack.
+
+### 10.6 `position: absolute` / `relative`
+
+- `relative`: смещение через padding контейнера.
+- `absolute`: позиционирование относительно предка с `position: relative` (или окна). Эмулировать через stack слои, как `fixed`.
+
+### 10.7 `position: sticky`
+
+- Эмулировать через Iced scrollable + перехват событий скролла.
+- Пока не поддерживается Iced нативно. Можно через subscription на scroll position + ручное позиционирование.
+
+### 10.8 `opacity`
+
+- Iced: `widget.opacity(f32)` (iced 0.14+).
+
+### 10.9 `box-shadow`, `text-shadow`
+
+- Эмуляция: container с подложкой (offset background) или кастомный шейдер.
+- Iced 0.14 имеет `Border` только с `color`, `width`, `radius`. Shadow — нет.
+
+### 10.10 `outline`
+
+- Через border с `outline-offset` эмуляцией.
+
+### 10.11 Трансформы (`transform`)
+
+- Iced не поддерживает transforms нативно.
+- Потребуется кастомный widget с `lyon` или `vello` для path-трансформаций.
+- На раннем этапе — документировать как unsupported.
+
+---
+
+## 11. Инструментарий разработчика
+
+### 11.1 Вывод вычисленных стилей
+
+- Флаг `--debug-styles` в CLI: печатать `ComputedStyle` каждого элемента.
+
+### 11.2 Инспектор элементов
+
+- Iced debug overlay: `iced::widget::pane_grid` с инспектором.
+- Показывать matched selectors, specificity, computed properties.
+
+### 11.3 Hot-reload стилей
+
+- Перекомпиляция `.glts` без перезапуска приложения.
+- Обновление bytecode в runtime.
+
+---
+
+## 12. Порядок реализации (приоритеты)
+
+### Фаза 1: Критическое (MVP+)
+1. Структурированные селекторы + matching engine со специфичностью
+2. Комбинаторы (особенно descendant)
+3. Псевдоклассы `:hover`, `:active`, `:focus`
+4. Селектор по ID (`#id`)
+5. Множественные селекторы через запятую
+6. Псевдоклассы `:first-child`, `:nth-child`, `:last-child`, `:empty`
+
+### Фаза 2: Визуальное обогащение
+7. Новые свойства: opacity, font-weight, text-align, justify-content, line-height
+8. fill-шорткаты для flex (flex-grow/shrink/basis)
+9. `position: absolute` / `relative` / `sticky`
+10. `z-index`
+11. `display: none`
+12. `calc()`, `min()`, `max()`, `clamp()`
+13. `rgb()`, `rgba()`, `hsl()` + расширенный словарь named colors
+14. `!important`
+
+### Фаза 3: Продвинутое
+15. `@media` queries
+16. Animations (playback)
+17. Transitions
+18. `box-shadow`, `text-shadow` (эмуляция)
+19. CSS Grid
+20. `flex-wrap` + `justify-content` полноценно
+21. `var()` CSS custom properties
+22. `@import`
+23. `@font-face`
+
+### Фаза 4: Экспертное
+24. `transform`, `transform-origin`
+25. `backdrop-filter`, `filter`
+26. `gradient` (linear, radial)
+27. `color-mix()`, `oklch()`
+28. Hot-reload
+29. DevTools инспектор
+30. `@scope`
+
+---
+
+## 13. Архитектурные изменения
+
+### 13.1 `ComputedStyle` → разбить на подс-труктуры
+
+Вместо 40+ плоских полей:
+
+```rust
+pub struct ComputedStyle {
+    pub box_model: BoxModel,
+    pub typography: Typography,
+    pub background: BackgroundStyle,
+    pub border: BorderStyle,
+    pub flex: FlexStyle,
+    pub grid: GridStyle,
+    pub position: Positioning,
+    pub effects: Effects,
+    pub overflow: OverflowStyle,
+    pub animation: AnimationStyle,
+    pub custom: HashMap<String, String>,
+    pub display: Option<Display>,
+    pub visibility: Option<Visibility>,
+}
+```
+
+### 13.2 Selector engine — отдельный модуль
+
+```rust
+mod selector {
+    pub struct Selector { ... }
+    pub fn parse(input: &str) -> Result<Selector, String>;
+    pub fn specificity(&self) -> (u32, u32, u32);
+    pub fn matches(&self, el: &Element, ctx: &MatchContext) -> bool;
+}
+```
+
+### 13.3 StyleSheet — расширение
+
+```rust
+pub struct StyleRule {
+    pub selector: Selector,
+    pub properties: HashMap<String, String>,
+    pub source_order: u32,
+    pub media: Option<MediaQuery>,
+    pub important: HashSet<String>,
+}
+```
+
+### 13.4 Система тиков для анимаций/транзишенов
+
+- Новый модуль `animation` в runtime.
+- `AnimationEngine` с `HashMap<AnimationId, AnimationInstance>`.
+- Iced subscription: `time::every(Duration::from_millis(16))` (60fps).
+
+---
+
+## 14. Оценка сложности
+
+| Компонент | Новые файлы | Изменённые файлы | Пример LOC |
+|-----------|-------------|------------------|------------|
+| Selector parser | `glt/src/selector.rs` | `style_parser.rs` | ~500 |
+| Selector matching | `runtime/src/selector.rs` | `mod.rs` | ~400 |
+| ComputedStyle расширение | — | `style.rs` | +400 |
+| Медиа-запросы | — | `style_parser.rs`, `mod.rs` | ~300 |
+| Анимации | `runtime/src/animation.rs` | `style.rs`, `mod.rs`, `app.rs` | ~500 |
+| Транзишены | `runtime/src/transition.rs` | | ~400 |
+| Псевдоклассы | — | `mod.rs`, `renderer.rs`, `types.rs` | ~300 |
+| Новые парсеры свойств | — | `style.rs` | +600 |
+| Рендеринг | — | `renderer.rs` | +500 |
+| Flex/Grid | `runtime/src/layout.rs` | `renderer.rs` | ~400 |
+| calc/var | `runtime/src/values.rs` | `style.rs` | ~300 |
+| @import/@font-face | — | `style_parser.rs`, `renderer.rs` | ~200 |
+| Инструменты | `runtime/src/inspector.rs` | `cli.rs`, `app.rs` | ~300 |
+
+**Итого:** ~5–7 новых файлов, ~15 изменённых, ~5000–6000 строк нового кода.

desktop.gltm

@@ -1,207 +1,209 @@
 // =============================================================================
-// GLINT UI: Ultimate Reactive Showcase Architecture
+// GLINT UI: Compact Reactive Test Suite (Fixed Layout)
 // =============================================================================
 
 @version 1
 @style "main.glts"
 
-// ── 1. Global Configuration & Constants ──────────────────────────────────────
+// ── 1. Global Application State ──────────────────────────────────────────────
-
+@global $APP_TITLE = "Glint Core Console"
-@global $APP_TITLE    = "Glint Design System & Rhei Demo"
+@global $username = "Operator"
-@global $IS_PRODUCTION = false
+@global $volume_level = 50.0
-
+@global $is_enabled = true
-// Глобальное состояние приложения
+@global $access_level = 5.0
-@global $access_level = 3.0
+@global $team_nodes = ["Alpha", "Bravo", "Charlie"]
-@global $username     = "Guest"
+@global $show_toast = true
-@global $volume_level = 0.0
-@global $is_enabled   = false
-@global $search_query = "Type to search..."
-@global $team_members = ["Alexander", "Beatrice", "Cyrus", "Diana"]
 
 @singleton SystemSettings {
-    theme        = "ocean-blue",
+    theme = "ocean-blue",
     refresh_rate = 60,
-    debug_mode   = true,
+    debug_mode = true,
     storage_path = fs:/var/lib/glint/assets
 }
 
-// ── 2. Logic Layer (Document-level Rhai Script) ──────────────────────────────
-
 !rhei: {
-    // Вспомогательные UI-функции
+    fn load_status(val) {
-    fn level_label(lvl) {
+        if val == 0.0 { "💤 Muted" }
-        if lvl >= 8.0 { "Admin" }
+        else if val >= 80.0 { "🔥 Overload" }
-        else if lvl >= 5.0 { "Moderator" }
+        else { "⚡ Active" }
-        else { "Guest" }
     }
 
-    fn volume_icon(vol) {
+    let sum = 0;
-        if vol == 0.0  { "🔇" }
+    for i in 1..=5 { sum = sum + i; }
-        else if vol < 40.0 { "🔈" }
+    print("Rhai Engine online. Checksum: " + sum);
-        else if vol < 75.0 { "🔉" }
-        else { "🔊" }
-    }
-
-    // Демонстрация сложных вычислений при загрузке документа
-    const TARGET = 20;
-    fn fib(n) {
-        if n < 2 { return n; }
-        let a = 0; let b = 1;
-        for i in 2..=n {
-            let c = a + b;
-            a = b; b = c;
-        }
-        b
-    }
-    
-    print(`Initializing Glint Engine...`);
-    let result = fib(TARGET);
-    print(`Fibonacci(${TARGET}) computed on load: ${result}`);
 }
 
-// ── 3. UI Components ─────────────────────────────────────────────────────────
+// ── 2. Reusable UI Components ────────────────────────────────────────────────
-
+@component NodeCard(nodename: String, level: Float) {
-@component ProfileCard(username: String, access_level: Float) {
+    Panel(class="ui-card") {
-    Panel {
+        Label(text=$nodename)
-        Header !rhei: { "User: " + username }
+        @if !rhei: { level >= 5.0 } {
-        Label(text=$username)
+            Text "🛡️ Secure Node"
-        
-        // Сложное условие в Rhai: вычисляется при каждом обновлении VDOM
-        @if !rhei: { (access_level >= 5.0) && (username.len() > 0) } {
-            Text "✅ Administrator Privileges Active"
-            Text !rhei: { "Role: " + level_label(access_level) }
         } @else {
-            Text "🔒 Restricted Access Mode"
+            Text "🔓 Guest Node"
-            Text "Role: Guest"
         }
     }
 }
 
-// ── 4. Main Application Tree ─────────────────────────────────────────────────
+// ── 3. Application Layout Tree ───────────────────────────────────────────────
+Window(title=$APP_TITLE, width=1024, height=720) {
+    Panel(class="sticky-header") {
+    	Header "Glint Compiler/Runtime Demostration"
+    }
+    Panel(class="layout-viewport") {
 
-Window(
+        // --- Верхняя панель (Header Section) ---
-    title=$APP_TITLE, 
+        Panel(class="layout-row") {
-    width=1280, 
+            Image(src=fs:/home/faynot/elyz/software/glt/logo.png) {}
-    height=800, 
+            Panel(class="layout-col") {
-    resizable=true
+                Header "Glint Reactive Dashboard"
-) {
+                Text !rhei: { "User: " + username + " | Status: " + load_status(volume_level) }
-    // Локальное состояние окна
-    @let $show_metrics = true
-
-    Panel(id="main_viewport", padding=24) {
-        
-        Header "Dashboard Overview"
-        Text "Welcome to the ultimate Glint component test suite."
-        Divider()
-        
-        // ── Секция A: Control Panel (Переменные и биндинги) ──────────────────
-        Header "A. Control Panel & State Bindings"
-
-	Image(src=fs:/home/faynot/elyz/software/glt/logo.png) {}
-        
-        Panel {
-            Input(placeholder=$search_query, value=$search_query)
-            Toggle(label="Enable Live Metrics", value=$is_enabled)
-            Text !rhei: { "Live search query: " + search_query }
-        }
-
-        @if $is_enabled {
-            Text "✅ Features are ON. You can adjust the system."
-        } @else {
-            Text "⛔ Features are OFF."
-        }
-        
-        Divider()
-
-        // ── Секция B: Arithmetic Conditions & Reactive Text ──────────────────
-        Header "B. Rhei Arithmetic Conditions"
-        
-        Slider(value=$volume_level)
-        ProgressBar(value=$volume_level)
-        
-        // Трехуровневое ветвление с использованием Rhai-условий
-        @if !rhei: { volume_level == 0.0 } {
-            Text "🔇 Muted"
-        } @else {
-            @if !rhei: { volume_level >= 75.0 } {
-                Text "🔊 High volume — protect your hearing!"
-            } @else {
-                // Инлайн-текст, вызывающий функцию из глобального скрипта
-                Text !rhei: { volume_icon(volume_level) + " Volume OK: " + volume_level + " / 100" }
             }
         }
 
         Divider()
 
-        // ── Секция C: Access Control & Component Instantiation ───────────────
+        // --- Главная рабочая область (Workspace Split) ---
-        Header "C. Multi-variable Logic & Components"
+        Panel(class="layout-row") {
 
-        Slider(value=$access_level)
+            // Левая колонка: Интерактивное состояние и биндинги
+            Panel(class="layout-col") {
+                Panel(class="ui-card") {
+                    Header "State Bindings"
+                    Input(placeholder="Change title...", value=$APP_TITLE)
+                    Toggle(label="Live Engine", value=$is_enabled)
 
-        !rhei: { "Current slider level: " + access_level + " → " + level_label(access_level) }
+                    @if $is_enabled {
+                        Text "🟢 System: ONLINE"
+                    } @else {
+                        Text "🔴 System: OFFLINE"
+                    }
+                }
 
-        Panel {
+                Panel(class="ui-card") {
-            Button(label="Grant Admin (Level 9)") {
+                    Header "Control Channels"
-                @on click {
+                    Slider(value=$volume_level)
-                    !rhei: { access_level = 9.0; }
+                    ProgressBar(value=$volume_level)
+                    Text !rhei: { "Metrics Level: " + volume_level + "%" }
                 }
             }
-            Button(label="Reset (Level 1)") {
+
-                @on click {
+            // Правая колонка: Тестирование геометрии и каскада стилей
-                    !rhei: { access_level = 1.0; }
+            Panel(class="layout-col") {
+                Panel(class="geometry-box") {
+                    Header "Box Model Geometry"
+                    Text "Asymmetric padding layout container."
+                    Panel(class="margin-test-item") {
+                        Text "Margin-Top Spacer Box"
+                    }
                 }
-            }
-        }
 
-        @if !rhei: {
+                Panel(class="inheritance-box") {
-            let threshold = 5.0;
+                    Text "Inherited Yellow Color & 18px Font Size"
-            access_level >= threshold
+                    Text(class="override-style") "Explicit Style Override (Pink, 12px)"
-        } {
+                }
-            Text "🛡️ Access granted — Privileged Zone"
-            ProfileCard(username=$username, access_level=$access_level)
-        } @else {
-            Text "🚫 Access denied — Raise your level to 5+"
-        }
 
-        Divider()
+                // Управление уровнем доступа и изменение переменных по клику
+                Panel(class="ui-card") {
+                    Header "Access Management"
+                    Slider(value=$access_level)
 
-        // ── Секция D: Dynamic List Rendering (@each) ─────────────────────────
+                    // ── ТЕСТ POSITION: ABSOLUTE ─────────────────────
-        Header "D. Team Management (Reactive Grid)"
+                    Panel(class="abs-demo-container") {
+                        Panel(class="abs-demo-badge") {
+                            Text "ABSOLUTE!"
+                        }
+                        Text "(бадж спозиционирован абсолютно)"
+                        Button(label="Press me") {}
+                    }
 
-        // Передаем direction и columns как свойства компонента
+                    Panel(class="layout-row") {
-        Panel(columns=2, direction="grid") {
+                        Button(label="Set Admin (Lvl 9)", class="btn-custom") {
-            @each $name in $team_members {
+                            @on click { !rhei: { access_level = 9.0; } }
-                Panel {
+                        }
-                    ProfileCard(username=$name, access_level=$access_level) 
+                        Button(label="Reset Access") {
-                    
+                            @on click { !rhei: { access_level = 1.0; } }
-                    Button(label="Promote System-wide") {
-                        @on click {
-                            !rhei: { 
-                                // VDOM автоматически заменит "$name" на "Alexander", "Beatrice" и т.д.
-                                let target_name = "$name"; 
-                                print("Promoting triggered by " + target_name);
-                                
-                                if access_level < 10.0 {
-                                    access_level += 1.0;
-                                }
-                            }
                         }
                     }
                 }
             }
         }
 
-        Divider()
+        // --- Динамический список узлов (@each Grid) ---
+        Panel(direction="grid", columns=3, gap=12, class="layout-clean") {
+            @each $node in $team_nodes {
+                NodeCard(nodename=$node, level=$access_level)
+            }
+        }
 
-        // ── Секция E: Footer Metadata ────────────────────────────────────────
+        // --- Нижняя панель распределения пространства ---
-        Panel {
+        Panel(class="flex-row-bar") {
-            Text "System Version: 1.0.5-stable"
+            Panel(class="fill-10") { Text "Grow 10%" }
+            Panel(class="fixed-120") { Text "Fixed 120px" }
+            Panel(class="fill-20") { Text "Grow 20%" }
+        }
+    }
 
-            // Многострочный скрипт прямо внутри текстового узла
+    // ── ТЕСТ ФИКСИРОВАННЫХ СЛОЕВ ───────────────────
-            !rhei: { 
+    @if $show_toast {
-                let pct = (access_level * 10.0).to_string();
+        Panel(class="fixed-toast") {
-                "Access Power: " + pct + "% | Integrity: OK"
+            Panel(class="layout-row") {
+                Text "🔔 [FIXED LAYER TEST]: Runtime compiled successfully!"
+                Button(label="❌", class="btn-close") {
+                    @on click { !rhei: { show_toast = false; } }
+                }
             }
         }
     }
+
+    Panel(class="scroll-test-box") {
+    Header "Scroll Test"
+    Text "Line 1: Item A"
+    Text "Line 2: Item B"
+    Text "Line 3: Item C"
+    Text "Line 4: Item D"
+    Text "Line 5: Item E"
+    Text "Line 6: Item F"
+    Text "Line 7: Item G"
+    Text "Line 8: Item H"
+    Text "Line 9: Item I"
+    Text "Line 10: Item J"
+}
+
+    // ── ДЕМО POSITION: ABSOLUTE (Overlay-карточка) ────────────────────
+    Panel(class="absolute-demo-section") {
+        Header "Position: Absolute Demo"
+        Panel(class="abs-stage") {
+            Panel(class="abs-overlay") {
+                Text "🎯 Абсолютно спозиционирована!"
+                Text "top: 10px | right: 10px"
+            }
+            Text "Этот текст — часть нормального потока."
+            Text "Оверлей лежит поверх, не влияя на раскладку."
+            Text "Работает как position: absolute в CSS."
+        }
+    }
+
+Panel(class="sticky-container") {
+        Text "Scroll down to test sticky effect (внутренний скролл):"
+
+        // Стикер внутри скролл-контейнера
+        Panel(class="sticky-header") {
+            Text "📌 STICKY: я прилип к верху!"
+        }
+
+        // Большой блок текста снизу, чтобы гарантировать появление скролла
+        Panel(class="scroll-spacer") {
+            Text "Item 1: Лорем ипсум долор сит амет..."
+            Text "Item 2: Консектетур адипискинг элит."
+            Text "Item 3: Сед до эйусмод темпор."
+            Text "Item 4: Инсидидунт ут лаборе."
+            Text "Item 5: Долоре магна аликва."
+            Text "Item 6: Ут enim ад миним veniam."
+            Text "Item 7: Квис нострум экзерситатион."
+            Text "Item 8: Уллаmко лаборис ниси ут."
+            Text "Item 9: Аликип экс иа коммодо."
+            Text "— Конец тестового контента —"
+        }
+    }
 }

display.gtlm

@@ -0,0 +1,82 @@
+// =============================================================================
+// GLINT UI: Style Properties Test Suite
+// Tests: opacity, font-weight, text-align, line-height, display: none
+// =============================================================================
+
+@version 1
+@style "main.glts"
+
+@global $show_secret = true
+
+Window(title="Style Test Suite", width=800, height=600) {
+    Panel(class="layout-viewport") {
+        Header "Style Properties Test Suite"
+
+        // ── 1. Opacity ───────────────────────────────────────────────
+        Text(class="test-section-header") "1. Opacity"
+        Panel(class="test-row") {
+            Panel(class="opacity-fade") {
+                Text "Fade (0.3)"
+            }
+            Panel(class="opacity-mid") {
+                Text "Mid (0.6)"
+            }
+            Panel(class="opacity-subtle") {
+                Text "Subtle (0.85)"
+            }
+        }
+
+        Divider()
+
+        // ── 2. Font Weight ────────────────────────────────────────────
+        Text(class="test-section-header") "2. Font Weight"
+        Panel(class="test-row") {
+            Text(class="fw-light") "Light 300"
+            Text(class="fw-normal") "Normal 400"
+            Text(class="fw-bold") "Bold 700"
+            Text(class="fw-black") "Black 900"
+        }
+
+        Divider()
+
+        // ── 3. Text Align ─────────────────────────────────────────────
+        Text(class="test-section-header") "3. Text Align"
+        Panel(class="ta-box") { Text(class="ta-left")   "Left Aligned" }
+        Panel(class="ta-box") { Text(class="ta-center") "Center Aligned" }
+        Panel(class="ta-box") { Text(class="ta-right")  "Right Aligned" }
+
+        Divider()
+
+        // ── 4. Comma-separated Selectors ─────────────────────────────
+        Text(class="test-section-header") "4. Comma Selectors"
+        Panel(class="layout-row") {
+            Text(class="warning-text") "⚠ Warning text"
+            Text(class="error-text") "✖ Error text"
+        }
+
+        Divider()
+
+        // ── 6. Line Height ────────────────────────────────────────────
+        Text(class="test-section-header") "4. Line Height"
+        Panel(class="lh-box") {
+            Text(class="lh-tight") "Line height 0.8 — плотный текст для проверки межстрочного интервала. Текст должен быть более сжатым по вертикали."
+        }
+        Panel(class="lh-box") {
+            Text(class="lh-normal") "Line height 1.2 — нормальное значение по умолчанию. Этот блок служит эталоном для сравнения."
+        }
+        Panel(class="lh-box") {
+            Text(class="lh-loose") "Line height 2.0 — разреженный текст для наглядного сравнения. Строки должны быть хорошо заметно разделены."
+        }
+
+        Divider()
+
+        // ── 7. Display: None ──────────────────────────────────────────
+        Text(class="test-section-header") "5. Display: None"
+        Panel(class="hidden-box") {
+            Text "Этого блока не должно быть видно!"
+        }
+        @if $show_secret {
+            Text "✅ Блок с display:none скрыт (выше не видно красную панель)."
+        }
+    }
+}

main.glts

@@ -1,29 +1,18 @@
 // =============================================================================
-// Glint Design System — Master Stylesheet (main.glts)
+// Glint Design System — Core Fixed Stylesheet (main.glts)
 // =============================================================================
 
-// ── 1. Цветовая палитра и константы (Variables) ──────────────────────────────
+$bg-app =       #11111b
-$bg-app        = #11111b  // Глубокий темный фон для всего окна
+$bg-panel =     #1e1e2e
-$bg-panel      = #1e1e2e  // Базовый цвет для контейнеров и панелей
+$bg-surface =   #313244
-$bg-surface    = #313244  // Цвет для карточек и выделенных блоков
+$bg-input =     #181825
-$bg-field      = #181825  // Внутренний фон для полей ввода (Input)
+$accent =       #b4befe
-
+$text-main =    #cdd6f4
-$text-main     = #cdd6f4  // Мягкий белый основной текст
+$text-muted =   #9399b2
-$text-muted    = #9399b2  // Серый приглушенный текст для описаний
+$border-glow =  #45475a
-$accent        = #b4befe  // Лавандовый акцентный цвет для кнопок и заголовков
-$border-glow   = #45475a  // Цвет аккуратных рамок и разделителей
-
-// Сетка отступов (Размеры автоматически очищаются от "px" парсером Glint)
-$pad-dense     = 6px
-$pad-normal    = 12px
-$pad-roomy     = 20px
-$pad-window    = 28px
-
-// ── 2. Шаблоны стилей (Mixins) ───────────────────────────────────────────────
 
 @mixin text-body {
-    color: $text-main
+    font-size: 14px
-    font-size: 15px
 }
 
 @mixin standard-card {
@@ -33,47 +22,94 @@ $pad-window    = 28px
     border-radius: 12px
 }
 
-// ── 3. Правила для UI-компонентов (Element Rules) ────────────────────────────
-
-// Главное окно приложения
 Window {
     background: $bg-app
-    padding: $pad-window
-    spacing: $pad-roomy
 }
 
-// Универсальный контейнер ( viewport, карточки, обертки списков )
 Panel {
-    @use standard-card
+    background: transparent
-    padding: $pad-normal
+    border-width: 0px
-    gap: 14px
+    padding: 0px
+    gap: 12px
     direction: vertical
+}
+
+.ui-card {
+    @use standard-card
+    padding: 14px
+    gap: 12px
     align-items: center
     content-align: center
 }
 
-// Крупные заголовки секций
+// ── Служебные Layout-классы ──────────────────────────────────────────────────
-Header {
+
-    color: $accent
+.layout-viewport {
-    font-size: 22px
+    width: fill
-    padding: 4px
+    padding: 16px
+    gap: 16px
+}
+
+.layout-row {
+    direction: horizontal
+    gap: 16px
+}
+
+.layout-col {
+    direction: vertical
+    gap: 16px
+}
+
+.layout-clean {
+    width: fill
+}
+
+// ── Стили атомарных компонентов ──────────────────────────────────────────────
+
+Header {
+    color: $accent
+    font-size: 20px
+    padding: 2px
 }
 
-// Обычный текст
 Text {
     @use text-body
 }
 
-// Подписи, второстепенные метаданные
 Label {
     color: $text-muted
-    font-size: 13px
+    font-size: 12px
 }
 
-// Интерактивные элементы управления
+Input {
-Button {
+    background-color: $bg-input
+    color: $text-main
+    font-size: 14px
+    padding: 10px
     border-radius: 8px
     border-width: 1px
+    border-color: $border-glow
+    width: 240px
+}
+
+Toggle {
+    color: $text-main
+    font-size: 14px
+}
+
+Divider {
+    background: $border-glow
+    border-width: 1px
+}
+
+Button {
+    border-radius: 6px
+    border-width: 1px
+    padding: 8px
+}
+
+.btn-custom {
+    background: #000000
 }
 
 Image {
@@ -81,26 +117,316 @@ Image {
     border-width: 1px
 }
 
-// Текстовые поля ввода
+// ── Секция тестирования продвинутой геометрии Box-Model ──────────────────────
-Input {
+
-    background-color: $bg-field
+.geometry-box {
-    color: $text-main
+    @use standard-card
-    font-size: 14px
+    background: #24253a
-    padding: 12px
+    border-color: #f38ba8
-    border-radius: 16px
+    border-width: 2px
-    border-width: 1px
+    padding-top: 24px
-    border-color: $border-glow
+    padding-bottom: 12px
+    padding-left: 16px
+    padding-right: 40px
     width: 320px
 }
 
-// Переключатели
+.margin-test-item {
-Toggle {
+    background: #a6e3a1
-    color: $text-main
+    padding: 8px
-    font-size: 15px
+    margin-top: 12px
+    margin-bottom: 4px
 }
 
-// Разделительные линии (Divider / Separator)
+// ── Секция тестирования каскадного наследования (Inheritance) ────────────────
-Divider {
+
-    background: $border-glow
+.inheritance-box {
-    border-width: 1px
+    @use standard-card
+    background: #181825
+    padding: 12px
+    color: #f9e2af
+    font-size: 18px
+}
+
+.override-style {
+    color: #f38ba8
+    font-size: 12px
+}
+
+// ── Секция распределения весов Flex-Grow (Fill portions) ────────────────────
+
+.flex-row-bar {
+    background: $bg-surface
+    direction: horizontal
+    padding: 8px
+    gap: 8px
+    width: fill
+}
+
+.fill-10 {
+    background: #f38ba8
+    width: 10%
+}
+
+.fixed-120 {
+    background: #f9e2af
+    width: 50px
+    color: #11111b
+}
+
+.fill-20 {
+    background: #a6e3a1
+    width: 20%
+    color: #11111b
+}
+
+// ── СТИЛИ ДЛЯ ПРОВЕРКИ POSITION: FIXED ───────────────────────────────────────
+
+.fixed-toast {
+    position: fixed
+    top: 20px
+    right: 20px
+    background: #a6e3a1
+    border-radius: 8px
+    padding: 12px
+    border-width: 1px
+    border-color: #a6e3a1
+    color: #000
+    font-weight: bold
+}
+
+.btn-close {
+    background: transparen
+    border-width: 0px
+    padding: 2px
+}
+
+
+
+
+.scroll-test-box {
+    @use standard-card
+    background: #313244
+    height: 150px
+    width: 250px
+    overflow-y: scroll
+    padding: 10px
+}
+
+
+// ── Стили для тестирования Sticky Эффекта ────────────────────
+
+.sticky-container {
+    @use standard-card
+    background: #181825
+    padding: 12px
+    gap: 8px
+    width: fill
+    height: 200px
+    overflow-y: scroll
+}
+
+.sticky-header {
+    position: sticky
+    top: 0px
+    background: #fab387
+    padding: 10px 14px
+    border-radius: 6px
+    color: #11111b
+    font-weight: bold
+    font-size: 14px
+    width: fill
+}
+
+.scroll-spacer {
+    gap: 100px
+    padding: 10px
+    width: fill
+}
+
+// ── Стили для тестирования Opacity ────────────────────────────
+
+.opacity-fade {
+    background: #f38ba8
+    padding: 12px
+    border-radius: 8px
+    opacity: 0.3
+}
+
+.opacity-mid {
+    background: #a6e3a1
+    padding: 12px
+    border-radius: 8px
+    opacity: 0.6
+}
+
+.opacity-subtle {
+    background: #89b4fa
+    padding: 12px
+    border-radius: 8px
+    opacity: 0.85
+}
+
+// ── Стили для тестирования Font-Weight ─────────────────────────
+
+.fw-light {
+    font-weight: 300
+    color: $text-main
+}
+
+.fw-normal {
+    font-weight: 400
+    color: $text-main
+}
+
+.fw-bold {
+    font-weight: 700
+    color: $text-main
+}
+
+.fw-black {
+    font-weight: 900
+    color: $text-main
+}
+
+// ── Стили для тестирования Text-Align ──────────────────────────
+
+.ta-box {
+    background: #313244
+    padding: 8px
+    border-radius: 6px
+    width: fill
+}
+
+.ta-left {
+    text-align: left
+}
+
+.ta-center {
+    text-align: center
+}
+
+.ta-right {
+    text-align: right
+}
+
+// ── Стили для тестирования Line-Height ─────────────────────────
+
+.lh-box {
+    background: #313244
+    padding: 8px
+    border-radius: 6px
+    width: 300px
+}
+
+.lh-tight {
+    line-height: 0.8
+}
+
+.lh-normal {
+    line-height: 1.2
+}
+
+.lh-loose {
+    line-height: 2.0
+}
+
+// ── Стили для тестирования селекторов через запятую ────────────
+
+.warning-text, .error-text {
+    font-weight: bold
+    padding: 8px
+    border-radius: 6px
+}
+
+.warning-text {
+    color: #f9e2af
+    background: #3d3520
+}
+
+.error-text {
+    color: #f38ba8
+    background: #3d2020
+}
+
+// ── Стили для тестирования Display: None ───────────────────────
+
+.hidden-box {
+    background: #f38ba8
+    padding: 12px
+    border-radius: 8px
+    display: none
+}
+
+.test-section-header {
+    color: $accent
+    font-size: 16px
+    padding: 4px 0
+    margin-top: 8px
+}
+
+.test-row {
+    direction: horizontal
+    gap: 12px
+    align-items: center
+}
+
+// ── Стили для тестирования POSITION: ABSOLUTE ────────────────
+
+.abs-demo-container {
+    position: relative
+    background: #313244
+    padding: 16px
+    margin-top: 8px
+    border-radius: 8px
+    width: fill
+    gap: 8px
+    min-height: 60px
+}
+
+.abs-demo-badge {
+    position: absolute
+    top: 10px
+    right: 4px
+    background: #f38ba8
+    color: #11111b
+    font-weight: bold
+    font-size: 10px
+    padding: 4px 8px
+    border-radius: 4px
+}
+
+// ── Полноценная демка absolute-позиционирования ──────────────
+
+.absolute-demo-section {
+    @use standard-card
+    background: #181825
+    padding: 12px
+    gap: 8px
+    width: fill
+}
+
+.abs-stage {
+    position: relative
+    background: #24253a
+    border-color: $accent
+    border-width: 1px
+    border-radius: 8px
+    padding: 16px
+    gap: 6px
+    width: fill
+    min-height: 80px
+}
+
+.abs-overlay {
+    position: absolute
+    top: 10px
+    right: 10px
+    background: #f38ba8
+    border-radius: 6px
+    padding: 8px 12px
+    color: #11111b
+    font-weight: bold
+    font-size: 12px
+    gap: 4px
 }

src/app.rs

@@ -1,13 +1,13 @@
-use iced::widget::{column, container, row, scrollable, text, Space};
+use iced::widget::{column, container};
-use iced::{Alignment, Length, Theme};
+use iced::{Length, Theme};
 
 use crate::interpreter::{Document, Element, Interpreter, RheiContext};
 use crate::renderer::render_element;
 use crate::Message;
 
 pub struct GlintApp {
-    pub doc:        Document,
+    pub doc:        Document<'static>,
-    pub vdom_roots: Vec<Element>,
+    pub vdom_roots: Vec<Element<'static>>,
     pub rhei:       RheiContext,
 }
 
@@ -18,6 +18,9 @@ impl GlintApp {
 
     pub fn update(&mut self, message: Message) -> iced::Task<Message> {
         match message {
+            Message::WindowScrolled(y) => {
+                self.doc.variables.insert("__scroll_y".to_string(), y.to_string());
+            }
             Message::EventTriggered(script) => {
                 if !script.is_empty() {
                     self.rhei.execute_action(&script, &mut self.doc.variables);
@@ -40,56 +43,64 @@ impl GlintApp {
 
         self.vdom_roots = Interpreter::evaluate_vdom(
             &self.doc.roots,
-            &self.doc.variables,
+            &mut self.doc.variables,
             &self.doc.components,
             &self.rhei,
             &self.doc.stylesheet,
+            &[],
         );
 
         iced::Task::none()
     }
 
     pub fn view(&self) -> iced::Element<'_, Message, Theme, iced::Renderer> {
-        let mut content = column![].spacing(15).padding(20);
+        let mut content = column![]
+            .width(Length::Fill)
+            .height(Length::Fill);
+
+        let mut global_fixed_layers = Vec::new();
+        let mut global_abs_layers = Vec::new();
+        let mut global_sticky_layers = Vec::new();
+
+        let _scroll_y = self.doc.variables.get("__scroll_y")
+    .and_then(|v| v.parse::<f32>().ok())
+    .unwrap_or(0.0);
 
         for root in &self.vdom_roots {
-            if let Some(el) = render_element(root) {
+            if let Some(el) = render_element(root, None, None, None, &mut global_fixed_layers, &mut global_abs_layers, &mut global_sticky_layers, &self.doc.stylesheet) {
-                content = content.push(el);
+    content = content.push(el);
-            }
+}
         }
 
-        let status_bar = container(self.build_status_bar(&self.doc.variables))
-            .width(Length::Fill)
-            .padding(10);
-
         let layout = column![
-            scrollable(content).width(Length::Fill).height(Length::Fill),
+            content,
             iced::widget::rule::horizontal(1),
-            status_bar,
-        ];
-
-        container(layout)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .into()
-    }
-
-    fn build_status_bar<'a>(
-        &self,
-        scope: &std::collections::HashMap<String, String>,
-    ) -> iced::Element<'a, Message, Theme, iced::Renderer> {
-        let slider_val = scope.get("volume_level")
-            .and_then(|v| v.parse::<f64>().ok())
-            .unwrap_or(0.0);
-
-        row![
-            text("🟢 Runtime Active (VDOM + Rhai)").size(14),
-            Space::new().width(Length::Fill),
-            text(format!("Шаблонных узлов: {}", self.doc.roots.len())).size(14),
-            Space::new().width(Length::Fixed(15.0)),
-            text(format!("Слайдер ($volume_level): {:.1}", slider_val)).size(14),
         ]
-        .align_y(Alignment::Center)
+        .width(Length::Fill)
-        .into()
+        .height(Length::Fill);
+
+        let main_flow = container(layout)
+            .width(Length::Fill)
+            .height(Length::Fill);
+
+        let has_abs = !global_abs_layers.is_empty();
+        let has_sticky = !global_sticky_layers.is_empty();
+        let has_fixed = !global_fixed_layers.is_empty();
+
+        if !has_abs && !has_sticky && !has_fixed {
+            main_flow.into()
+        } else {
+            let mut stack_widget = iced::widget::stack![main_flow];
+            for layer in global_abs_layers {
+                stack_widget = stack_widget.push(layer);
+            }
+            for layer in global_sticky_layers {
+                stack_widget = stack_widget.push(layer);
+            }
+            for layer in global_fixed_layers {
+                stack_widget = stack_widget.push(layer);
+            }
+            stack_widget.into()
+        }
     }
 }

src/cli.rs

@@ -136,11 +136,12 @@ pub fn compile_files(gltm_files: &[String], glts_files: &[String], output_path:
 }
 
 pub fn run_file(path: &str) -> ! {
-    let bytecode = read_file_or_exit(path);
+    let bytecode_vec = read_file_or_exit(path);
+    let bytecode: &'static [u8] = Box::leak(bytecode_vec.into_boxed_slice());
     println!("{} {}", "▶️".green(), format!("Rendering: {}", path).bold());
 
     let start = Instant::now();
-    match Interpreter::run(&bytecode) {
+    match Interpreter::run(bytecode) {
         Ok(doc) => {
             println!(
                 "{} {} ({:?})",
@@ -157,18 +158,21 @@ pub fn run_file(path: &str) -> ! {
 
             let result = iced::application(
                 move || {
-                    let rhei = RheiContext::new(&doc.rhei_scripts);
+                    let mut local_doc = doc.clone();
+                    let rhei = RheiContext::new(&local_doc.rhei_scripts);
+                    rhei.initialize(&mut local_doc.variables);
 
                     let vdom_roots = Interpreter::evaluate_vdom(
-                        &doc.roots,
+                        &local_doc.roots,
-                        &doc.variables,
+                        &mut local_doc.variables,
-                        &doc.components,
+                        &local_doc.components,
                         &rhei,
-                        &doc.stylesheet,
+                        &local_doc.stylesheet,
+                        &[],
                     );
 
                     GlintApp {
-                        doc: doc.clone(),
+                        doc: local_doc,
                         rhei,
                         vdom_roots,
                     }

src/interpreter/mod.rs

@@ -1,9 +1,11 @@
+
 pub mod opcodes;
 pub mod reader;
 pub mod rhei;
 pub mod style;
 pub mod types;
 
+use std::borrow::Cow;
 pub use rhei::RheiContext;
 use style::StyleSheet as SS;
 pub use types::{ComponentDef, Document, Element, InterpError};
@@ -11,7 +13,7 @@ pub use types::{ComponentDef, Document, Element, InterpError};
 use opcodes::*;
 use reader::Reader;
 use rhei::{dyn_to_str, str_to_dyn, RHEI_PREFIX};
-use style::ComputedStyle;
+use style::{AncestorInfo, ComputedStyle, StructuralContext};
 use regex::Regex;
 use std::collections::HashMap;
 use std::sync::OnceLock;
@@ -21,8 +23,8 @@ static RE_VAR: OnceLock<Regex> = OnceLock::new();
 pub struct Interpreter;
 
 impl Interpreter {
-    pub fn run(bytecode: &[u8]) -> Result<Document, InterpError> {
+    pub fn run<'a>(bytecode: &'a [u8]) -> Result<Document<'a>, InterpError> {
-        if bytecode.len() < 4 { return Err(InterpError::UnexpectedEof); }
+    if bytecode.len() < 4 { return Err(InterpError::UnexpectedEof); }
         if &bytecode[..4] != MAGIC { return Err(InterpError::BadMagic); }
 
         let mut r           = Reader::new(bytecode);
@@ -41,20 +43,20 @@ impl Interpreter {
             true,
         )?;
 
-        let rhei_ctx = RheiContext::new(&rhei_scripts);
+        //let rhei_ctx = RheiContext::new(&rhei_scripts);
-        rhei_ctx.initialize(&mut variables);
+        //rhei_ctx.initialize(&mut variables);
 
         Ok(Document { roots, components, variables, rhei_scripts, stylesheet })
     }
 
-    fn parse_block_elements(
+    fn parse_block_elements<'a>(
-        r:            &mut Reader,
+    r:            &mut Reader<'a>,
-        variables:    &mut HashMap<String, String>,
+    variables:    &mut HashMap<String, String>,
-        components:   &mut HashMap<String, ComponentDef>,
+    components:   &mut HashMap<String, ComponentDef<'a>>,
-        rhei_scripts: &mut Vec<String>,
+    rhei_scripts: &mut Vec<String>,
-        stylesheet:   &mut SS,
+    stylesheet:   &mut SS,
-        is_root:      bool,
+    is_root:      bool,
-    ) -> Result<Vec<Element>, InterpError> {
+) -> Result<Vec<Element<'a>>, InterpError> {
         let mut roots: Vec<Element> = Vec::new();
         let mut stack: Vec<Element> = Vec::new();
 
@@ -63,7 +65,7 @@ impl Interpreter {
             if !is_root && op == OP_END_BLOCK { break; }
 
             match op {
-                OP_ELEM_PUSH => stack.push(Element::new(r.read_string()?)),
+                OP_ELEM_PUSH => stack.push(Element::new(r.read_str_ref()?)),
 
                 OP_ELEM_POP => {
                     let finished = stack.pop().ok_or(InterpError::UnexpectedPop)?;
@@ -90,53 +92,63 @@ impl Interpreter {
 
                 OP_CONTENT => {
                     let vop = r.read_byte()?;
-                    if let Some(value) = r.read_value_as_string(vop)? {
+                    if vop == OP_PROP_RHEI {
+                        let expr_ref = r.read_str_ref()?;
+                        let mut val = String::with_capacity(RHEI_PREFIX.len() + expr_ref.len());
+                        val.push_str(RHEI_PREFIX);
+                        val.push_str(expr_ref);
                         if let Some(el) = stack.last_mut() {
-                            let stored = if vop == OP_PROP_RHEI {
+                            el.push_prop("text".to_string(), val);
-                                format!("{RHEI_PREFIX}{value}")
+                        }
-                            } else {
+                    } else if let Some(value) = r.read_value_as_string(vop)? {
-                                value
+                        if let Some(el) = stack.last_mut() {
-                            };
+                            el.push_prop("text".to_string(), value);
-                            el.properties.insert("text".to_string(), stored);
                         }
                     }
                 }
 
                 OP_PROP_STR => {
-                    let (key, val) = (r.read_string()?, r.read_string()?);
+                    let key = r.read_str_ref()?;
-                    if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                    let val = r.read_str_ref()?;
+                    if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                 }
                 OP_PROP_VAR => {
-                    let key = r.read_string()?;
+                    let key = r.read_str_ref()?;
-                    let val = format!("${}", r.read_string()?);
+                    let val_ref = r.read_str_ref()?;
-                    if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                    let mut val = String::with_capacity(val_ref.len() + 1);
+                    val.push('$');
+                    val.push_str(val_ref);
+                    if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                 }
                 OP_PROP_INT => {
-                    let key = r.read_string()?;
+                    let key = r.read_str_ref()?;
                     let val = r.read_i64()?.to_string();
-                    if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                    if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                 }
                 OP_PROP_FLOAT => {
-                    let key = r.read_string()?;
+                    let key = r.read_str_ref()?;
                     let val = r.read_f64()?.to_string();
-                    if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                    if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                 }
                 OP_PROP_BOOL => {
-                    let key = r.read_string()?;
+                    let key = r.read_str_ref()?;
                     let val = (r.read_byte()? != 0).to_string();
-                    if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                    if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                 }
                 OP_PROP_RHEI => {
-                    let key  = r.read_string()?;
+                    let key = r.read_str_ref()?;
-                    let expr = r.read_string()?;
+                    let expr_ref = r.read_str_ref()?;
+                    let mut val = String::with_capacity(RHEI_PREFIX.len() + expr_ref.len());
+                    val.push_str(RHEI_PREFIX);
+                    val.push_str(expr_ref);
                     if let Some(el) = stack.last_mut() {
-                        el.properties.insert(key, format!("{RHEI_PREFIX}{expr}"));
+                        el.push_prop(key, val);
                     }
                 }
                 OP_PROP_UNIT | OP_PROP_CALL | OP_PROP_IDENT | OP_PROP_FSPATH | OP_PROP_COLOR => {
-                    let key = r.read_string()?;
+                    let key = r.read_str_ref()?;
                     if let Some(val) = r.read_value_as_string(op)? {
-                        if let Some(el) = stack.last_mut() { el.properties.insert(key, val); }
+                        if let Some(el) = stack.last_mut() { el.push_prop(key, val); }
                     }
                 }
 
@@ -145,8 +157,8 @@ impl Interpreter {
                     if is_root && stack.is_empty() {
                         rhei_scripts.push(script);
                     } else {
-                        let mut text_el = Element::new("#text".to_string());
+                        let mut text_el = Element::new("#text");
-                        text_el.properties.insert(
+                        text_el.push_prop(
                             "text".to_string(),
                             format!("{RHEI_PREFIX}{script}"),
                         );
@@ -187,12 +199,12 @@ impl Interpreter {
                         Vec::new()
                     };
 
-                    let mut if_el = Element::new("@if".to_string());
+                    let mut if_el = Element::new("@if");
-                    if_el.properties.insert("condition".to_string(), cond_val);
+                    if_el.push_prop("condition", cond_val);
                     if_el.children = true_children;
 
                     if !false_children.is_empty() {
-                        let mut else_el = Element::new("@else".to_string());
+                        let mut else_el = Element::new("@else");
                         else_el.children = false_children;
                         if_el.children.push(else_el);
                     }
@@ -214,9 +226,9 @@ impl Interpreter {
                         r, variables, components, rhei_scripts, stylesheet, false,
                     )?;
 
-                    let mut each_el = Element::new("@each".to_string());
+                    let mut each_el = Element::new("@each");
-                    each_el.properties.insert("var_name".to_string(), var_name);
+                    each_el.push_prop("var_name".to_string(), var_name);
-                    each_el.properties.insert("source".to_string(), source_val);
+                    each_el.push_prop("source".to_string(), source_val);
                     each_el.children = block_children;
                     Self::attach(&mut stack, &mut roots, each_el);
                 }
@@ -245,7 +257,7 @@ impl Interpreter {
                     }
 
                     if let Some(el) = stack.last_mut() {
-                        el.properties.insert(
+                        el.push_prop(
                             format!("__on:{event_name}"),
                             handler_script,
                         );
@@ -278,20 +290,54 @@ impl Interpreter {
         Ok(roots)
     }
 
-    pub fn evaluate_vdom(
+    pub fn evaluate_vdom<'a>(
-        templates:  &[Element],
+    templates:  &[Element<'a>],
-        variables:  &HashMap<String, String>,
+    variables:  &mut HashMap<String, String>,
-        components: &HashMap<String, ComponentDef>,
+    components: &HashMap<String, ComponentDef<'a>>,
-        rhei:       &RheiContext,
+    rhei:       &RheiContext,
-        stylesheet: &SS,
+    stylesheet: &SS,
-    ) -> Vec<Element> {
+    ancestors:  &[AncestorInfo],
+) -> Vec<Element<'a>> {
         let mut output = Vec::with_capacity(templates.len());
 
+        // Precompute sibling info for structural pseudo-classes and sibling combinators
+        let sibling_infos: Vec<AncestorInfo> = templates.iter().map(|el| {
+            AncestorInfo::new_with_id(
+                el.type_name,
+                el.id().map(String::from),
+                el.get_prop("class")
+                    .map(|s| s.split_whitespace().map(String::from).collect())
+                    .unwrap_or_default(),
+            )
+        }).collect();
+
+        // Precompute type totals for structural pseudo-class context
+        let mut type_counts: HashMap<&str, usize> = HashMap::new();
         for el in templates {
-            match el.type_name.as_str() {
+            *type_counts.entry(el.type_name).or_insert(0) += 1;
+        }
+        let mut type_seen: HashMap<&str, usize> = HashMap::new();
+
+        for (i, el) in templates.iter().enumerate() {
+            let type_idx = type_seen.entry(el.type_name).or_insert(0);
+            let type_total = *type_counts.get(el.type_name).unwrap_or(&0);
+
+            let structural = StructuralContext {
+                sibling_index: i,
+                sibling_total: templates.len(),
+                type_index: *type_idx,
+                type_total,
+                has_children: !el.children.is_empty()
+                    || el.properties.iter().any(|(k, v)| k == "text" && !v.is_empty()),
+                is_root: ancestors.is_empty(),
+            };
+
+            *type_idx += 1;
+
+            match el.type_name {
                 "@if" => {
-                    let cond    = el.properties.get("condition").cloned().unwrap_or_default();
+                    let cond = el.get_prop("condition").unwrap_or_default();
-                    let is_true = Self::evaluate_condition(&cond, variables, rhei);
+                    let is_true = Self::evaluate_condition(cond, variables, rhei);
 
                     let mut active_branch = Vec::new();
                     for child in &el.children {
@@ -302,21 +348,19 @@ impl Interpreter {
                         }
                     }
                     output.extend(Self::evaluate_vdom(
-                        &active_branch, variables, components, rhei, stylesheet,
+                        &active_branch, variables, components, rhei, stylesheet, ancestors,
                     ));
                 }
 
                 "@each" => {
-                    let var_name    = el.properties.get("var_name").cloned().unwrap_or_default();
+                    let var_name = el.get_prop("var_name").unwrap_or_default();
-                    let source_expr = el.properties.get("source").cloned().unwrap_or_default();
+                    let source_expr = el.get_prop("source").unwrap_or_default();
 
                     let resolved_source = if let Some(expr) = source_expr.strip_prefix(RHEI_PREFIX) {
-                        rhei.eval_expr(expr, variables)
+    Self::normalize_rhai_array(&rhei.eval_expr(expr, variables))
-                            .map(|s| Self::normalize_rhai_array(&s))
+} else {
-                            .unwrap_or_default()
+    Self::resolve_string(source_expr, variables).into_owned()
-                    } else {
+};
-                        Self::resolve_string(&source_expr, variables)
-                    };
 
                     let items: Vec<String> = if resolved_source.is_empty() {
                         vec![]
@@ -325,73 +369,84 @@ impl Interpreter {
                     };
 
                     for item in items {
-                        let mut local_vars = variables.clone();
+                        let old_val = variables.insert(var_name.to_string(), item);
-                        local_vars.insert(var_name.clone(), item);
+
                         output.extend(Self::evaluate_vdom(
-                            &el.children, &local_vars, components, rhei, stylesheet,
+                            &el.children, variables, components, rhei, stylesheet, ancestors,
                         ));
+
+                        if let Some(old) = old_val {
+                            variables.insert(var_name.to_string(), old);
+                        } else {
+                            variables.remove(var_name);
+                        }
                     }
                 }
 
                 _ => {
-                    if let Some(comp) = components.get(&el.type_name) {
+                    if let Some(comp) = components.get(el.type_name) {
-                        // Expand custom component
+                        let mut new_args = Vec::with_capacity(comp.params.len());
-                        let mut comp_scope = variables.clone();
                         for (param, _) in &comp.params {
-                            if let Some(arg) = el.properties.get(param) {
+                            if let Some(arg) = el.get_prop(param) {
-                                comp_scope.insert(
+                                new_args.push((
                                     param.clone(),
                                     Self::resolve_prop(arg, variables, rhei),
-                                );
+                                ));
                             }
                         }
 
-                        let mut vcomp = Element::new(el.type_name.clone());
+                        let mut old_vals = Vec::with_capacity(new_args.len());
+                        for (k, v) in new_args {
+                            old_vals.push((k.clone(), variables.insert(k, v)));
+                        }
+
+                        let mut vcomp = Element::new(el.type_name);
                         for (k, v) in &el.properties {
                             if k.starts_with("__on:") {
-                                vcomp.properties.insert(k.clone(), Self::resolve_string(v, variables));
+                                vcomp.set_prop(k.clone(), Self::resolve_string(v, variables).into_owned());
                             } else {
-                                vcomp.properties.insert(k.clone(), Self::resolve_prop(v, variables, rhei));
+                                vcomp.set_prop(k.clone(), Self::resolve_prop(v, variables, rhei));
                             }
                         }
 
-                        vcomp.computed_style = ComputedStyle::compute(
+                        let matched_sheets = Self::collect_matching_styles(&vcomp, stylesheet, &[], &structural, ancestors, &sibling_infos[0..i]);
-                            &vcomp.properties,
+                        vcomp.computed_style = ComputedStyle::compute(&vcomp.properties, &matched_sheets);
-                            stylesheet.resolve(&vcomp.type_name),
+
-                        );
+                        let child_ancestors = Self::build_ancestor_chain(ancestors, &vcomp);
                         vcomp.children = Self::evaluate_vdom(
-                            &comp.children, &comp_scope, components, rhei, stylesheet,
+                            &comp.children, variables, components, rhei, stylesheet, &child_ancestors,
                         );
                         output.push(vcomp);
+
+                        for (k, old) in old_vals.into_iter().rev() {
+                            if let Some(o) = old {
+                                variables.insert(k, o);
+                            } else {
+                                variables.remove(&k);
+                            }
+                        }
                     } else {
-                        let mut vnode = Element::new(el.type_name.clone());
+                        let mut vnode = Element::new(el.type_name);
 
                         for (k, v) in &el.properties {
                             if k.starts_with("__on:") {
-                                vnode.properties.insert(k.clone(), Self::resolve_string(v, variables));
+                                vnode.set_prop(k.clone(), Self::resolve_string(v, variables).into_owned());
                                 continue;
                             }
                             if v.starts_with('$')
                                 && !v[1..].contains(|c: char| !c.is_ascii_alphanumeric() && c != '_')
                             {
-                                vnode.properties.insert(
+                                vnode.set_prop(format!("__bind:{k}"), v[1..].to_string());
-                                    format!("__bind:{k}"),
-                                    v[1..].to_string(),
-                                );
                             }
-                            vnode.properties.insert(
+                            vnode.set_prop(k.clone(), Self::resolve_prop(v, variables, rhei));
-                                k.clone(),
-                                Self::resolve_prop(v, variables, rhei),
-                            );
                         }
 
-                        vnode.computed_style = ComputedStyle::compute(
+                        let matched_sheets = Self::collect_matching_styles(&vnode, stylesheet, &[], &structural, ancestors, &sibling_infos[0..i]);
-                            &vnode.properties,
+                        vnode.computed_style = ComputedStyle::compute(&vnode.properties, &matched_sheets);
-                            stylesheet.resolve(&el.type_name),
-                        );
 
+                        let child_ancestors = Self::build_ancestor_chain(ancestors, &vnode);
                         vnode.children = Self::evaluate_vdom(
-                            &el.children, variables, components, rhei, stylesheet,
+                            &el.children, variables, components, rhei, stylesheet, &child_ancestors,
                         );
                         output.push(vnode);
                     }
@@ -402,14 +457,46 @@ impl Interpreter {
         output
     }
 
-    fn resolve_prop(v: &str, variables: &HashMap<String, String>, rhei: &RheiContext) -> String {
+    fn build_ancestor_chain<'a>(ancestors: &[AncestorInfo], el: &Element) -> Vec<AncestorInfo> {
-        if let Some(expr) = v.strip_prefix(RHEI_PREFIX) {
+        let mut chain = ancestors.to_vec();
-            rhei.eval_expr(expr, variables).unwrap_or_default()
+        let id = el.id().map(String::from);
-        } else {
+        let classes: Vec<String> = el
-            Self::resolve_string(v, variables)
+            .get_prop("class")
-        }
+            .map(|s| s.split_whitespace().map(String::from).collect())
+            .unwrap_or_default();
+        chain.push(AncestorInfo::new_with_id(el.type_name, id, classes));
+        chain
     }
 
+    fn collect_matching_styles<'a>(
+        el: &Element,
+        stylesheet: &'a SS,
+        active_pseudo: &[&str],
+        structural: &StructuralContext,
+        ancestors: &[AncestorInfo],
+        preceding_siblings: &[AncestorInfo],
+    ) -> Vec<&'a HashMap<String, String>> {
+        let el_id = el.id();
+        let classes: Vec<&str> = el
+            .get_prop("class")
+            .map(|s| s.split_whitespace().collect())
+            .unwrap_or_default();
+
+        let el_attributes: HashMap<String, String> = el.properties.iter()
+            .map(|(k, v)| (k.to_string(), v.to_string()))
+            .collect();
+
+        stylesheet.matching_rules(el.type_name, el_id, &classes, active_pseudo, structural, ancestors, preceding_siblings, &el_attributes)
+    }
+
+    fn resolve_prop(v: &str, variables: &HashMap<String, String>, rhei: &RheiContext) -> String {
+    if let Some(expr) = v.strip_prefix(RHEI_PREFIX) {
+        rhei.eval_expr(expr, variables)
+    } else {
+        Self::resolve_string(v, variables).into_owned()
+    }
+}
+
     fn evaluate_condition(
         cond:      &str,
         variables: &HashMap<String, String>,
@@ -476,18 +563,38 @@ impl Interpreter {
         }
     }
 
-    pub fn resolve_string(val: &str, scope: &HashMap<String, String>) -> String {
+    pub fn resolve_string<'a>(val: &'a str, scope: &HashMap<String, String>) -> Cow<'a, str> {
-        let re = RE_VAR.get_or_init(|| Regex::new(r"\$([a-zA-Z0-9_]+)").unwrap());
+    if !val.contains('$') {
-        re.replace_all(val, |caps: &regex::Captures| {
+        return Cow::Borrowed(val);
-            scope.get(&caps[1])
-                .map(|s| s.as_str())
-                .unwrap_or(&caps[0])
-                .to_string()
-        })
-        .to_string()
     }
 
-    fn attach(stack: &mut Vec<Element>, roots: &mut Vec<Element>, el: Element) {
+    let mut result = String::with_capacity(val.len() + 16);
+    let mut chars = val.char_indices().peekable();
+
+    while let Some((_, c)) = chars.next() {
+        if c == '$' {
+            let mut var_name = String::new();
+            while let Some(&(_, next_c)) = chars.peek() {
+                if next_c.is_ascii_alphanumeric() || next_c == '_' {
+                    var_name.push(chars.next().unwrap().1);
+                } else {
+                    break;
+                }
+            }
+            if let Some(resolved) = scope.get(&var_name) {
+                result.push_str(resolved);
+            } else {
+                result.push('$');
+                result.push_str(&var_name);
+            }
+        } else {
+            result.push(c);
+        }
+    }
+    Cow::Owned(result)
+}
+
+    fn attach<'a>(stack: &mut Vec<Element<'a>>, roots: &mut Vec<Element<'a>>, el: Element<'a>) {
         match stack.last_mut() {
             Some(parent) => parent.children.push(el),
             None         => roots.push(el),

src/interpreter/reader.rs

@@ -7,81 +7,115 @@ pub struct Reader<'a> {
 }
 
 impl<'a> Reader<'a> {
+    #[inline(always)]
     pub fn new(data: &'a [u8]) -> Self {
         Self { data, pos: 0 }
     }
 
+    #[inline(always)]
     pub fn remaining(&self) -> usize {
         self.data.len() - self.pos
     }
 
+    #[inline(always)]
+    fn require(&self, n: usize) -> Result<(), InterpError> {
+        if self.pos + n > self.data.len() {
+            Err(InterpError::UnexpectedEof)
+        } else {
+            Ok(())
+        }
+    }
 
+    #[inline(always)]
     pub fn read_byte(&mut self) -> Result<u8, InterpError> {
         self.require(1)?;
-        let b = self.data[self.pos];
+        let b = unsafe { *self.data.get_unchecked(self.pos) };
         self.pos += 1;
         Ok(b)
     }
 
+    #[inline(always)]
     pub fn read_u32(&mut self) -> Result<u32, InterpError> {
         self.require(4)?;
-        let v = u32::from_le_bytes(self.data[self.pos..self.pos + 4].try_into().unwrap());
+        let v = unsafe {
+            let ptr = self.data.as_ptr().add(self.pos) as *const [u8; 4];
+            u32::from_le_bytes(std::ptr::read_unaligned(ptr))
+        };
         self.pos += 4;
         Ok(v)
     }
 
+    #[inline(always)]
     pub fn read_i64(&mut self) -> Result<i64, InterpError> {
         self.require(8)?;
-        let v = i64::from_le_bytes(self.data[self.pos..self.pos + 8].try_into().unwrap());
+        let v = unsafe {
+            let ptr = self.data.as_ptr().add(self.pos) as *const [u8; 8];
+            i64::from_le_bytes(std::ptr::read_unaligned(ptr))
+        };
         self.pos += 8;
         Ok(v)
     }
 
+    #[inline(always)]
     pub fn read_f64(&mut self) -> Result<f64, InterpError> {
         self.require(8)?;
-        let v = f64::from_le_bytes(self.data[self.pos..self.pos + 8].try_into().unwrap());
+        let v = unsafe {
+            let ptr = self.data.as_ptr().add(self.pos) as *const [u8; 8];
+            f64::from_le_bytes(std::ptr::read_unaligned(ptr))
+        };
         self.pos += 8;
         Ok(v)
     }
 
+    #[inline(always)]
+    pub fn read_str_ref(&mut self) -> Result<&'a str, InterpError> {
+    let len = self.read_u32()? as usize;
+        self.require(len)?;
+
+        let slice = &self.data[self.pos .. self.pos + len];
+        self.pos += len;
+
+        unsafe {
+            Ok(std::str::from_utf8_unchecked(slice))
+        }
+    }
+
+    #[inline(always)]
     pub fn read_string(&mut self) -> Result<String, InterpError> {
+        self.read_str_ref().map(|s| s.to_owned())
+    }
+
+    #[inline(always)]
+    pub fn skip_string(&mut self) -> Result<(), InterpError> {
         let len = self.read_u32()? as usize;
         self.require(len)?;
-        let s = std::str::from_utf8(&self.data[self.pos..self.pos + len])
-            .map_err(|_| InterpError::InvalidUtf8)?
-            .to_string();
         self.pos += len;
-        Ok(s)
+        Ok(())
     }
 
     pub fn read_value_as_string(&mut self, type_op: u8) -> Result<Option<String>, InterpError> {
         let s = match type_op {
-            OP_PROP_STR | OP_PROP_COLOR | OP_PROP_FSPATH | OP_PROP_RHEI => {
+            OP_PROP_STR | OP_PROP_COLOR | OP_PROP_FSPATH | OP_PROP_RHEI | OP_PROP_IDENT => {
-                Some(self.read_string()?)
-            }
-            OP_PROP_IDENT => {
                 Some(self.read_string()?)
             }
             OP_PROP_VAR => {
-                Some(format!("${}", self.read_string()?))
+                let name = self.read_str_ref()?;
-            }
+                let mut s = String::with_capacity(name.len() + 1);
-            OP_PROP_INT => {
+                s.push('$');
-                Some(self.read_i64()?.to_string())
+                s.push_str(name);
-            }
+                Some(s)
-            OP_PROP_FLOAT => {
-                Some(self.read_f64()?.to_string())
-            }
-            OP_PROP_BOOL => {
-                Some((self.read_byte()? != 0).to_string())
             }
+            OP_PROP_INT => Some(self.read_i64()?.to_string()),
+            OP_PROP_FLOAT => Some(self.read_f64()?.to_string()),
+            OP_PROP_BOOL => Some((self.read_byte()? != 0).to_string()),
             OP_PROP_NULL => None,
             OP_PROP_ARRAY => {
                 let items = self.read_array_as_strings()?;
                 Some(items.join(","))
             }
             OP_PROP_UNIT => {
-                let num  = self.read_f64()?;
+                let num = self.read_f64()?;
-                let unit = self.read_string()?;
+                let unit = self.read_str_ref()?;
                 if num.fract() == 0.0 {
                     Some(format!("{}{}", num as i64, unit))
                 } else {
@@ -89,13 +123,12 @@ impl<'a> Reader<'a> {
                 }
             }
             OP_PROP_CALL => {
-                let name      = self.read_string()?;
+                let name = self.read_string()?;
                 let arg_count = self.read_u32()? as usize;
-                let mut args  = Vec::with_capacity(arg_count);
+                let mut args = Vec::with_capacity(arg_count);
                 for _ in 0..arg_count {
-                    let op  = self.read_byte()?;
+                    let op = self.read_byte()?;
-                    let val = self.read_value_as_string(op)?
+                    let val = self.read_value_as_string(op)?.unwrap_or_default();
-                        .unwrap_or_default();
                     args.push(val);
                 }
                 Some(format!("{}({})", name, args.join(",")))
@@ -105,7 +138,6 @@ impl<'a> Reader<'a> {
         Ok(s)
     }
 
-    /// Read `OP_PROP_ARRAY` (opcode already consumed) and return elements as strings.
     pub fn read_array_as_strings(&mut self) -> Result<Vec<String>, InterpError> {
         let count = self.read_u32()? as usize;
         let mut items = Vec::with_capacity(count);
@@ -118,21 +150,15 @@ impl<'a> Reader<'a> {
         Ok(items)
     }
 
-
     pub fn skip_value(&mut self, type_op: u8) -> Result<(), InterpError> {
         match type_op {
-            OP_PROP_STR
+            OP_PROP_STR | OP_PROP_COLOR | OP_PROP_FSPATH | OP_PROP_VAR | OP_PROP_RHEI | OP_PROP_IDENT => {
-            | OP_PROP_COLOR
+                self.skip_string()?;
-            | OP_PROP_FSPATH
-            | OP_PROP_VAR
-            | OP_PROP_RHEI
-            | OP_PROP_IDENT => {
-                self.read_string()?;
             }
-            OP_PROP_INT   => { self.read_i64()?; }
+            OP_PROP_INT => { self.read_i64()?; }
             OP_PROP_FLOAT => { self.read_f64()?; }
-            OP_PROP_BOOL  => { self.read_byte()?; }
+            OP_PROP_BOOL => { self.read_byte()?; }
-            OP_PROP_NULL  => {}
+            OP_PROP_NULL => {}
             OP_PROP_ARRAY => {
                 let count = self.read_u32()?;
                 for _ in 0..count {
@@ -141,11 +167,11 @@ impl<'a> Reader<'a> {
                 }
             }
             OP_PROP_UNIT => {
-                self.read_f64()?;    // number
+                self.read_f64()?;
-                self.read_string()?; // unit suffix
+                self.skip_string()?;
             }
             OP_PROP_CALL => {
-                self.read_string()?; // function name
+                self.skip_string()?;
                 let arg_count = self.read_u32()?;
                 for _ in 0..arg_count {
                     let op = self.read_byte()?;
@@ -157,49 +183,38 @@ impl<'a> Reader<'a> {
         Ok(())
     }
 
-    /// Skip a full opcode + its payload without interpreting it.
     pub fn skip_opcode(&mut self, op: u8) -> Result<(), InterpError> {
         match op {
-            OP_VERSION              => { self.read_i64()?; }
+            OP_VERSION => { self.read_i64()?; }
-            OP_STYLE | OP_RHEI_BLK => { self.read_string()?; }
+            OP_STYLE | OP_RHEI_BLK => { self.skip_string()?; }
 
-            OP_PROP_STR
+            OP_PROP_STR | OP_PROP_COLOR | OP_PROP_FSPATH | OP_PROP_VAR | OP_PROP_RHEI |
-            | OP_PROP_COLOR
+            OP_PROP_INT | OP_PROP_FLOAT | OP_PROP_BOOL | OP_PROP_NULL | OP_PROP_ARRAY |
-            | OP_PROP_FSPATH
+            OP_PROP_CALL | OP_PROP_UNIT | OP_PROP_IDENT => {
-            | OP_PROP_VAR
+                self.skip_string()?;
-            | OP_PROP_RHEI
+                self.skip_value(op)?;
-            | OP_PROP_INT
-            | OP_PROP_FLOAT
-            | OP_PROP_BOOL
-            | OP_PROP_NULL
-            | OP_PROP_ARRAY
-            | OP_PROP_CALL
-            | OP_PROP_UNIT
-            | OP_PROP_IDENT => {
-                self.read_string()?;  // key
-                self.skip_value(op)?; // value
             }
 
             OP_GLOBAL | OP_LET => {
-                self.read_string()?;
+                self.skip_string()?;
                 let vop = self.read_byte()?;
                 self.skip_value(vop)?;
             }
             OP_SINGLETON => {
-                self.read_string()?;
+                self.skip_string()?;
                 let count = self.read_u32()?;
                 for _ in 0..count {
-                    self.read_string()?;
+                    self.skip_string()?;
                     let vop = self.read_byte()?;
                     self.skip_value(vop)?;
                 }
             }
             OP_COMPONENT => {
-                self.read_string()?;
+                self.skip_string()?;
                 let params = self.read_u32()?;
                 for _ in 0..params {
-                    self.read_string()?;
+                    self.skip_string()?;
-                    self.read_string()?;
+                    self.skip_string()?;
                 }
                 self.skip_block()?;
             }
@@ -210,50 +225,48 @@ impl<'a> Reader<'a> {
                 if self.read_byte()? == 1 { self.skip_block()?; }
             }
             OP_EACH => {
-                self.read_string()?;
+                self.skip_string()?;
                 let vop = self.read_byte()?;
                 self.skip_value(vop)?;
                 self.skip_block()?;
             }
             OP_ON => {
-                self.read_string()?;
+                self.skip_string()?;
                 let args = self.read_u32()?;
                 for _ in 0..args {
-                    self.read_string()?;
+                    self.skip_string()?;
                     let vop = self.read_byte()?;
                     self.skip_value(vop)?;
                 }
                 self.skip_block()?;
             }
-            OP_ELEM_PUSH => { self.read_string()?; }
+            OP_ELEM_PUSH => { self.skip_string()?; }
-            OP_CONTENT   => {
+            OP_CONTENT => {
                 let vop = self.read_byte()?;
                 self.skip_value(vop)?;
             }
-
             OP_STYLE_RULE => {
-                self.read_string()?;         // selector
+                self.skip_string()?;
                 let count = self.read_u32()?;
                 for _ in 0..count {
-                    self.read_string()?;     // property key
+                    self.skip_string()?;
                     let vop = self.read_byte()?;
-                    self.skip_value(vop)?;   // property value
+                    self.skip_value(vop)?;
                 }
             }
             OP_STYLE_ANIM => {
-                self.read_string()?;         // animation name
+                self.skip_string()?;
                 let frame_count = self.read_u32()?;
                 for _ in 0..frame_count {
-                    self.read_string()?;     // step ("from", "to", "50%", …)
+                    self.skip_string()?;
                     let prop_count = self.read_u32()?;
                     for _ in 0..prop_count {
-                        self.read_string()?;
+                        self.skip_string()?;
                         let vop = self.read_byte()?;
                         self.skip_value(vop)?;
                     }
                 }
             }
-
             _ => {}
         }
         Ok(())
@@ -266,15 +279,4 @@ impl<'a> Reader<'a> {
             self.skip_opcode(op)?;
         }
     }
-
-
-    #[inline]
-    fn require(&self, n: usize) -> Result<(), InterpError> {
-        if self.remaining() < n {
-            Err(InterpError::UnexpectedEof)
-        } else {
-            Ok(())
-        }
-    }
 }
-

src/interpreter/rhei.rs

@@ -1,12 +1,13 @@
-use rhai::{Dynamic, Engine, Scope, AST};
+use rhai::{Dynamic, Engine, Scope, AST, Module};
 use std::collections::HashMap;
+use std::cell::RefCell;
 
 pub const RHEI_PREFIX: &str = "__rhei:";
 
 pub struct RheiContext {
     engine: Engine,
     init_ast: AST,
-    fn_ast: AST,
+    scope: RefCell<Scope<'static>>,
 }
 
 impl RheiContext {
@@ -29,102 +30,88 @@ impl RheiContext {
         let mut fn_ast = combined.clone();
         fn_ast.clear_statements();
 
+        match Module::eval_ast_as_new(Scope::new(), &fn_ast, &engine) {
+            Ok(module) => {
+                engine.register_global_module(module.into());
+            }
+            Err(e) => {
+                eprintln!("⚠️  Rhei module creation error: {e}");
+            }
+        }
+
         Self {
             engine,
             init_ast: combined,
-            fn_ast 
+            scope: RefCell::new(Scope::new()),
         }
     }
 
-    pub fn initialize(&self, variables: &mut HashMap<String, String>) {
+    pub fn sync_scope(&self, variables: &HashMap<String, String>) {
-        let mut scope = Scope::new();
+        let mut scope = self.scope.borrow_mut();
+
         for (k, v) in variables.iter() {
-            scope.push_dynamic(k.clone(), str_to_dyn(v));
+            if scope.contains(k) {
-        }
+                if let Some(old_val) = scope.get_value::<Dynamic>(k) {
-
+                    if dyn_to_str(&old_val) == *v {
-        if let Err(e) = self.engine.run_ast_with_scope(&mut scope, &self.init_ast) {
+                        continue;
-            eprintln!("⚠️  Rhei init error: {e}");
+                    }
-        }
+                }
-
+                scope.set_value(k, str_to_dyn(v));
-        let names: Vec<String> = scope.iter_raw()
+            } else {
-            .map(|(name, _, _)| name.to_string())
+                scope.push_dynamic(k.clone(), str_to_dyn(v));
-            .collect();
-        for name in &names {
-            if let Some(val) = scope.get_value::<Dynamic>(name) {
-                variables.insert(name.clone(), dyn_to_str(&val));
             }
         }
     }
 
-    pub fn eval_expr(&self, expr: &str, variables: &HashMap<String, String>) -> Option<String> {
+    pub fn initialize(&self, variables: &mut HashMap<String, String>) {
-        let mut scope = Scope::new();
+        self.sync_scope(variables);
-        for (k, v) in variables {
+
-            scope.push_dynamic(k.clone(), str_to_dyn(v));
+        let mut scope = self.scope.borrow_mut();
+        if let Err(e) = self.engine.run_ast_with_scope(&mut *scope, &self.init_ast) {
+            eprintln!("⚠️  Rhei initialization error: {e}");
         }
 
-        let expr_ast = self.engine
+        for (name, _, val) in scope.iter_raw() {
-            .compile_expression(expr)
+            let s_val = dyn_to_str(&val);
-            .or_else(|_| self.engine.compile(expr))
+            if variables.get(name).map(|v| v != &s_val).unwrap_or(true) {
-            .ok()?;
+                variables.insert(name.to_string(), s_val);
+            }
+        }
+    }
 
-        let full = self.fn_ast.merge(&expr_ast);
+    pub fn eval_expr(&self, expr: &str, variables: &HashMap<String, String>) -> String {
+        self.sync_scope(variables);
+        let mut scope = self.scope.borrow_mut();
 
-        match self.engine.eval_ast_with_scope::<Dynamic>(&mut scope, &full) {
+        match self.engine.eval_expression_with_scope::<Dynamic>(&mut *scope, expr) {
-            Ok(val)  => Some(dyn_to_str(&val)),
+            Ok(val) => dyn_to_str(&val),
-            Err(e)   => {
+            Err(e) => {
-                eprintln!("⚠️  Rhei eval `{expr}`: {e}");
+                eprintln!("⚠️  Rhei eval_expr error: {e}");
-                None
+                String::new()
             }
         }
     }
 
     pub fn eval_condition(&self, expr: &str, variables: &HashMap<String, String>) -> bool {
-        let mut scope = Scope::new();
+        self.sync_scope(variables);
-        for (k, v) in variables {
+        let mut scope = self.scope.borrow_mut();
-            scope.push_dynamic(k.clone(), str_to_dyn(v));
-        }
 
-        let ast = match self.engine.compile_expression(expr) {
+        match self.engine.eval_expression_with_scope::<bool>(&mut *scope, expr) {
-            Ok(a)  => a,
+            Ok(b) => b,
-            Err(_) => match self.engine.compile(expr) {
-                Ok(a)  => a,
-                Err(e) => {
-                    eprintln!("⚠️  Rhei condition compile `{expr}`: {e}");
-                    return false;
-                }
-            },
-        };
-
-        let full = self.fn_ast.merge(&ast);
-
-        match self.engine.eval_ast_with_scope::<Dynamic>(&mut scope, &full) {
-            Ok(val) => {
-                if val.is_bool() { return val.cast::<bool>(); }
-                if val.is_int()  { return val.cast::<i64>() != 0; }
-                if val.is_float(){ return val.cast::<f64>() != 0.0; }
-                if val.is_string(){
-                    let s = val.cast::<String>();
-                    return !matches!(s.trim(), "" | "false" | "0" | "null");
-                }
-                !val.is_unit()
-            }
             Err(e) => {
-                eprintln!("⚠️  Rhei condition eval `{expr}`: {e}");
+                eprintln!("⚠️  Rhei eval_condition error: {e}");
                 false
             }
         }
     }
 
     pub fn execute_action(&self, script: &str, variables: &mut HashMap<String, String>) {
-        let mut scope = Scope::new();
+        self.sync_scope(variables);
-        for (k, v) in variables.iter() {
+        let mut scope = self.scope.borrow_mut();
-            scope.push_dynamic(k.clone(), str_to_dyn(v));
-        }
 
         match self.engine.compile(script) {
             Ok(action_ast) => {
-                let full = self.fn_ast.merge(&action_ast);
+                if let Err(e) = self.engine.run_ast_with_scope(&mut *scope, &action_ast) {
-                if let Err(e) = self.engine.run_ast_with_scope(&mut scope, &full) {
                     eprintln!("⚠️  Rhei action execution error: {e}");
                 }
             }
@@ -133,12 +120,10 @@ impl RheiContext {
             }
         }
 
-        let names: Vec<String> = scope.iter_raw()
+        for (name, _, val) in scope.iter_raw() {
-            .map(|(name, _, _)| name.to_string())
+            let s_val = dyn_to_str(&val);
-            .collect();
+            if variables.get(name).map(|v| v != &s_val).unwrap_or(true) {
-        for name in &names {
+                variables.insert(name.to_string(), s_val);
-            if let Some(val) = scope.get_value::<Dynamic>(name) {
-                variables.insert(name.clone(), dyn_to_str(&val));
             }
         }
     }
@@ -150,7 +135,6 @@ impl Default for RheiContext {
     }
 }
 
-
 pub fn str_to_dyn(s: &str) -> Dynamic {
     if let Ok(i) = s.parse::<i64>()  { return Dynamic::from(i); }
     if let Ok(f) = s.parse::<f64>()  { return Dynamic::from(f); }
@@ -158,12 +142,9 @@ pub fn str_to_dyn(s: &str) -> Dynamic {
     Dynamic::from(s.to_owned())
 }
 
-pub fn dyn_to_str(val: &Dynamic) -> String {
+pub fn dyn_to_str(d: &Dynamic) -> String {
-    if val.is_string() {
+    if d.is_string() {
-        return val.clone().cast::<String>();
+        return d.clone().into_string().unwrap_or_default();
     }
-    if val.is_unit() {
+    d.to_string()
-        return String::new();
-    }
-    val.to_string()
 }

src/interpreter/style.rs

@@ -1,8 +1,465 @@
 use std::collections::HashMap;
+use std::borrow::Cow;
+
+
+#[derive(Debug, Clone)]
+pub enum AttributeSelector {
+    Exists(String),
+    Equals(String, String),
+}
+
+fn parse_attribute(input: &str) -> AttributeSelector {
+    let input = input.trim();
+    if let Some((name, val)) = input.split_once('=') {
+        let name = name.trim().to_string();
+        let val = val.trim().trim_matches('"').trim_matches('\'').to_string();
+        AttributeSelector::Equals(name, val)
+    } else {
+        AttributeSelector::Exists(input.to_string())
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct CompoundSelector {
+    pub tag:           Option<String>,
+    pub id:            Option<String>,
+    pub classes:       Vec<String>,
+    pub pseudo_classes: Vec<String>,
+    pub attributes:    Vec<AttributeSelector>,
+}
+
+impl CompoundSelector {
+    fn parse(input: &str) -> Self {
+        let input = input.trim();
+        let mut tag           = None;
+        let mut id            = None;
+        let mut classes       = Vec::new();
+        let mut pseudo_classes = Vec::new();
+        let mut attributes    = Vec::new();
+
+        let mut current = String::new();
+        let mut delim: Option<char> = None;
+
+        for ch in input.chars() {
+            match ch {
+                '#' | '.' | ':' | '[' => {
+                    if !current.is_empty() {
+                        match (delim, ch) {
+                            (Some('.'), _) => classes.push(std::mem::take(&mut current)),
+                            (Some(':'), _) => pseudo_classes.push(std::mem::take(&mut current)),
+                            (Some('#'), _) => id = Some(std::mem::take(&mut current)),
+                            (Some('['), _) => {
+                                attributes.push(parse_attribute(&std::mem::take(&mut current)));
+                            }
+                            _ if tag.is_none() && id.is_none()
+                                && classes.is_empty() && pseudo_classes.is_empty()
+                                && attributes.is_empty() =>
+                            {
+                                tag = Some(std::mem::take(&mut current));
+                            }
+                            _ => current.clear(),
+                        }
+                    }
+                    delim = Some(ch);
+                }
+                ']' => {
+                    if delim == Some('[') && !current.is_empty() {
+                        attributes.push(parse_attribute(&std::mem::take(&mut current)));
+                        delim = None;
+                    }
+                }
+                _ => current.push(ch),
+            }
+        }
+
+        if !current.is_empty() {
+            match delim {
+                Some('#') => id = Some(current),
+                Some('.') => classes.push(current),
+                Some(':') => pseudo_classes.push(current),
+                Some('[') => attributes.push(parse_attribute(&current)),
+                None => tag = Some(current),
+                _ => {}
+            }
+        }
+
+        Self { tag, id, classes, pseudo_classes, attributes }
+    }
+
+    fn specificity(&self) -> (u32, u32, u32) {
+        (
+            if self.id.is_some() { 1 } else { 0 },
+            self.classes.len() as u32 + self.attributes.len() as u32 + self.pseudo_classes.len() as u32,
+            if self.tag.is_some() { 1 } else { 0 },
+        )
+    }
+
+    pub fn matches_element(
+        &self,
+        type_name: &str,
+        el_id: Option<&str>,
+        el_classes: &[&str],
+        active_pseudo: &[&str],
+        structural: &StructuralContext,
+        el_attributes: &HashMap<String, String>,
+    ) -> bool {
+        if let Some(ref t) = self.tag {
+            if t != type_name && t != "*" {
+                return false;
+            }
+        }
+        if let Some(ref i) = self.id {
+            match el_id {
+                Some(eid) if eid == i => {}
+                _ => return false,
+            }
+        }
+        for cls in &self.classes {
+            if !el_classes.contains(&cls.as_str()) {
+                return false;
+            }
+        }
+        for attr in &self.attributes {
+            match attr {
+                AttributeSelector::Exists(name) => {
+                    if !el_attributes.contains_key(name) {
+                        return false;
+                    }
+                }
+                AttributeSelector::Equals(name, val) => {
+                    match el_attributes.get(name) {
+                        Some(v) if v == val => {}
+                        _ => return false,
+                    }
+                }
+            }
+        }
+        for pc in &self.pseudo_classes {
+            match pc.as_str() {
+                "first-child" => {
+                    if structural.sibling_index != 0 { return false; }
+                }
+                "last-child" => {
+                    if structural.sibling_index + 1 != structural.sibling_total { return false; }
+                }
+                "first-of-type" => {
+                    if structural.type_index != 0 { return false; }
+                }
+                "empty" => {
+                    if structural.has_children { return false; }
+                }
+                "root" => {
+                    if !structural.is_root { return false; }
+                }
+                s if s.starts_with("nth-child(") => {
+                    let inner = &s[10..s.len().saturating_sub(1)];
+                    if !nth_matches(inner, structural.sibling_index + 1) {
+                        return false;
+                    }
+                }
+                _ => {
+                    if !active_pseudo.contains(&pc.as_str()) {
+                        return false;
+                    }
+                }
+            }
+        }
+        true
+    }
+}
+
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Combinator {
+    Descendant,   // Space
+    Child,        // >
+    NextSibling,  // +
+    Subsequent,   // ~
+}
+
+#[derive(Debug, Clone)]
+pub struct ComplexSelector {
+    pub compounds:   Vec<CompoundSelector>,
+    pub combinators: Vec<Combinator>,
+}
+
+impl ComplexSelector {
+    pub fn parse(input: &str) -> Self {
+        let input = input.trim();
+        if input.is_empty() {
+            return Self { compounds: vec![], combinators: vec![] };
+        }
+
+        let mut parts: Vec<(String, Combinator)> = Vec::new();
+        let mut buf = String::new();
+        let mut chars = input.chars().peekable();
+
+        while let Some(ch) = chars.next() {
+            match ch {
+                '>' | '+' | '~' => {
+                    let right = buf.trim().to_string();
+                    let combinator = match ch {
+                        '>' => Combinator::Child,
+                        '+' => Combinator::NextSibling,
+                        '~' => Combinator::Subsequent,
+                        _ => unreachable!(),
+                    };
+                    if !right.is_empty() {
+                        parts.push((right, combinator));
+                    }
+                    buf.clear();
+                    while let Some(&c) = chars.peek() {
+                        if c.is_ascii_whitespace() { chars.next(); } else { break; }
+                    }
+                }
+                '#' | '.' | ':' => {
+                    buf.push(ch);
+                }
+                c if c.is_ascii_whitespace() => {
+                    let candidate = buf.trim().to_string();
+                    if !candidate.is_empty() {
+                        let mut peek_pos = chars.clone();
+                        let next_nonws = peek_pos.find(|c| !c.is_ascii_whitespace());
+                        match next_nonws {
+                            Some('>') | Some('+') | Some('~') => {
+                                buf.push(' ');
+                            }
+                            _ => {
+                                parts.push((candidate, Combinator::Descendant));
+                                buf.clear();
+                            }
+                        }
+                    }
+                }
+                _ => buf.push(ch),
+            }
+        }
+
+        let last = buf.trim().to_string();
+        if !last.is_empty() {
+            if parts.is_empty() {
+                parts.push((last, Combinator::Descendant));
+            } else {
+                parts.push((last, Combinator::Descendant));
+            }
+        }
+
+        let compounds: Vec<CompoundSelector> = parts.iter().map(|(s, _)| CompoundSelector::parse(s)).collect();
+        let combinators: Vec<Combinator> = parts.iter().rev().skip(1).rev().map(|(_, c)| *c).collect();
+
+        Self { compounds, combinators }
+    }
+
+    fn check_compound_against(&self, i: usize, info: &AncestorInfo) -> bool {
+        let compound = &self.compounds[i];
+        let tag_ok = compound.tag.as_ref().map_or(true, |t| {
+            t == &info.type_name || t == "*"
+        });
+        let id_ok = compound.id.as_ref().map_or(true, |id| {
+            info.id.as_ref().map_or(false, |sid| sid == id)
+        });
+        let classes_ok = compound.classes.iter()
+            .all(|c| info.classes.contains(c));
+        tag_ok && id_ok && classes_ok
+    }
+
+    pub fn matches(
+        &self,
+        type_name: &str,
+        el_id: Option<&str>,
+        el_classes: &[&str],
+        active_pseudo: &[&str],
+        structural: &StructuralContext,
+        ancestors: &[AncestorInfo],
+        preceding_siblings: &[AncestorInfo],
+        el_attributes: &HashMap<String, String>,
+    ) -> bool {
+        if self.compounds.is_empty() {
+            return false;
+        }
+
+        let target = self.compounds.last().unwrap();
+        if !target.matches_element(type_name, el_id, el_classes, active_pseudo, structural, el_attributes) {
+            return false;
+        }
+
+        if self.compounds.len() == 1 {
+            return true;
+        }
+
+        let mut ai = 0;
+        let mut si = preceding_siblings.len();
+        for i in (0..self.compounds.len() - 1).rev() {
+            let combinator = self.combinators[i];
+
+            match combinator {
+                Combinator::Descendant => {
+                    let mut found = false;
+                    for a in &ancestors[ai..] {
+                        if self.check_compound_against(i, a) {
+                            found = true;
+                            break;
+                        }
+                    }
+                    if !found { return false; }
+                }
+                Combinator::Child => {
+                    if ai >= ancestors.len() { return false; }
+                    let a = &ancestors[ai];
+                    if !self.check_compound_against(i, a) { return false; }
+                    ai += 1;
+                }
+                Combinator::NextSibling => {
+                    if si == 0 { return false; }
+                    let sib = &preceding_siblings[si - 1];
+                    if !self.check_compound_against(i, sib) { return false; }
+                    si -= 1;
+                }
+                Combinator::Subsequent => {
+                    let mut found = false;
+                    for sib in preceding_siblings[..si].iter().rev() {
+                        if self.check_compound_against(i, sib) {
+                            found = true;
+                            break;
+                        }
+                    }
+                    if !found { return false; }
+                }
+            }
+        }
+
+        true
+    }
+
+    pub fn specificity(&self) -> (u32, u32, u32) {
+        let mut a = 0u32;
+        let mut b = 0u32;
+        let mut c = 0u32;
+        for compound in &self.compounds {
+            let (sa, sb, sc) = compound.specificity();
+            a += sa;
+            b += sb;
+            c += sc;
+        }
+        (a, b, c)
+    }
+
+    pub fn as_simple(&self) -> Option<&CompoundSelector> {
+        if self.compounds.len() == 1 {
+            self.compounds.first()
+        } else {
+            None
+        }
+    }
+
+    pub fn has_pseudo_class(&self, pc: &str) -> bool {
+        self.compounds.iter().any(|c| c.pseudo_classes.iter().any(|p| p == pc))
+    }
+}
+
+
+#[derive(Debug, Clone)]
+pub struct AncestorInfo {
+    pub type_name: String,
+    pub id:        Option<String>,
+    pub classes:   Vec<String>,
+}
+
+impl AncestorInfo {
+    pub fn new(type_name: &str, classes: Vec<String>) -> Self {
+        Self { type_name: type_name.to_string(), id: None, classes }
+    }
+
+    pub fn new_with_id(type_name: &str, id: Option<String>, classes: Vec<String>) -> Self {
+        Self { type_name: type_name.to_string(), id, classes }
+    }
+}
+
+
+#[derive(Debug, Clone, Default)]
+pub struct StructuralContext {
+    pub sibling_index: usize,
+    pub sibling_total: usize,
+    pub type_index: usize,
+    pub type_total: usize,
+    pub has_children: bool,
+    pub is_root: bool,
+}
+
+fn nth_matches(expr: &str, n: usize) -> bool {
+    let expr = expr.trim();
+
+    if expr.eq_ignore_ascii_case("odd") {
+        return n % 2 == 1;
+    }
+    if expr.eq_ignore_ascii_case("even") {
+        return n % 2 == 0;
+    }
+
+    if let Ok(num) = expr.parse::<i32>() {
+        return n == num as usize;
+    }
+
+    let expr_lower = expr.to_lowercase();
+    if let Some(n_pos) = expr_lower.find('n') {
+        let a_str = expr_lower[..n_pos].trim();
+        let b_str = expr_lower[n_pos + 1..].trim();
+
+        let a = if a_str.is_empty() || a_str == "+" {
+            1
+        } else if a_str == "-" {
+            -1
+        } else {
+            a_str.parse::<i32>().unwrap_or(0)
+        };
+
+        let b = if b_str.is_empty() {
+            0
+        } else if b_str.starts_with('+') {
+            b_str[1..].trim().parse::<i32>().unwrap_or(0)
+        } else if b_str.starts_with('-') {
+            b_str.parse::<i32>().unwrap_or(0)
+        } else {
+            b_str.parse::<i32>().unwrap_or(0)
+        };
+
+        if a == 0 {
+            return n == b as usize;
+        }
+
+        let n_i32 = n as i32;
+        if a > 0 {
+            let k = n_i32 - b;
+            k >= 0 && k % a == 0
+        } else {
+            let diff = b - n_i32;
+            diff >= 0 && diff % a.abs() == 0
+        }
+    } else {
+        false
+    }
+}
+
+
+#[derive(Debug, Clone)]
+pub struct StyleRule {
+    pub selector:   ComplexSelector,
+    pub properties: HashMap<String, String>,
+}
+
+impl StyleRule {
+    pub fn build(selector_str: String, properties: HashMap<String, String>) -> Self {
+        Self {
+            selector: ComplexSelector::parse(&selector_str),
+            properties,
+        }
+    }
+}
+
 
 #[derive(Debug, Clone, Default)]
 pub struct StyleSheet {
-    index: HashMap<String, HashMap<String, String>>,
+    rules: Vec<StyleRule>,
 }
 
 impl StyleSheet {
@@ -11,80 +468,374 @@ impl StyleSheet {
     }
 
     pub fn add_rule(&mut self, selector: String, properties: HashMap<String, String>) {
-        self.index
+        for part in split_selectors(&selector) {
-            .entry(selector.trim().to_string())
+            self.rules.push(StyleRule::build(part, properties.clone()));
-            .or_default()
+        }
-            .extend(properties);
     }
 
-    #[inline]
+    pub fn matching_rules<'a>(
-    pub fn resolve(&self, element_type: &str) -> Option<&HashMap<String, String>> {
+        &'a self,
-        self.index.get(element_type.trim())
+        type_name: &str,
+        el_id: Option<&str>,
+        el_classes: &[&str],
+        active_pseudo: &[&str],
+        structural: &StructuralContext,
+        ancestors: &[AncestorInfo],
+        preceding_siblings: &[AncestorInfo],
+        el_attributes: &HashMap<String, String>,
+    ) -> Vec<&'a HashMap<String, String>> {
+        let mut matched: Vec<(usize, &StyleRule)> = self
+            .rules
+            .iter()
+            .enumerate()
+            .filter(|(_, rule)| {
+                rule.selector
+                    .matches(type_name, el_id, el_classes, active_pseudo, structural, ancestors, preceding_siblings, el_attributes)
+            })
+            .collect();
+
+        matched.sort_by(|(i, a), (j, b)| {
+            a.selector
+                .specificity()
+                .cmp(&b.selector.specificity())
+                .then_with(|| i.cmp(j))
+        });
+
+        matched.into_iter().map(|(_, rule)| &rule.properties).collect()
+    }
+
+    pub fn matching_pseudo_rules(
+        &self,
+        pseudo: &str,
+        type_name: &str,
+        el_id: Option<&str>,
+        el_classes: &[&str],
+        structural: &StructuralContext,
+        ancestors: &[AncestorInfo],
+        preceding_siblings: &[AncestorInfo],
+        el_attributes: &HashMap<String, String>,
+    ) -> HashMap<String, String> {
+        let mut props = HashMap::new();
+        for rule in &self.rules {
+            if !rule.selector.has_pseudo_class(pseudo) {
+                continue;
+            }
+            if !rule.selector.matches(type_name, el_id, el_classes, &[pseudo], structural, ancestors, preceding_siblings, el_attributes) {
+                continue;
+            }
+            for (k, v) in &rule.properties {
+                props.insert(k.clone(), v.clone());
+            }
+        }
+        props
     }
 
     pub fn is_empty(&self) -> bool {
-        self.index.is_empty()
+        self.rules.is_empty()
     }
 }
 
+fn split_selectors(input: &str) -> Vec<String> {
+    let mut parts = Vec::new();
+    let mut depth = 0u32;
+    let mut start = 0usize;
+
+    for (i, ch) in input.char_indices() {
+        match ch {
+            '(' | '[' => depth += 1,
+            ')' | ']' => depth = depth.saturating_sub(1),
+            ',' if depth == 0 => {
+                let part = input[start..i].trim();
+                if !part.is_empty() {
+                    parts.push(part.to_string());
+                }
+                start = i + 1;
+            }
+            _ => {}
+        }
+    }
+
+    let last = input[start..].trim();
+    if !last.is_empty() {
+        parts.push(last.to_string());
+    }
+
+    parts
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum Overflow {
+    #[default]
+    Visible,
+    Hidden,
+    Scroll,
+    Auto,
+}
+
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum Position {
+    #[default]
+    Static,
+    Relative,
+    Absolute,
+    Sticky,
+    Fixed,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum Display {
+    #[default]
+    Block,
+    Flex,
+    Grid,
+    Inline,
+    None,
+}
+
 #[derive(Debug, Clone, Copy, Default)]
 pub struct ComputedStyle {
     pub font_size:     Option<f32>,
     pub color:         Option<iced::Color>,
     pub padding:       Option<f32>,
+    pub padding_top:   Option<f32>,
+    pub padding_right: Option<f32>,
+    pub padding_bottom:Option<f32>,
+    pub padding_left:  Option<f32>,
+
+    pub margin:        Option<f32>,
+    pub margin_top:    Option<f32>,
+    pub margin_right:  Option<f32>,
+    pub margin_bottom: Option<f32>,
+    pub margin_left:   Option<f32>,
+
     pub background:    Option<iced::Color>,
     pub spacing:       Option<f32>,
     pub border_radius: Option<f32>,
     pub border_width:  Option<f32>,
     pub border_color:  Option<iced::Color>,
-    pub width:         Option<f32>,
+
+    pub width:         Option<iced::Length>,
+    pub height:        Option<iced::Length>,
+
+    pub min_width:     Option<f32>,
+    pub max_width:     Option<f32>,
+    pub min_height:    Option<f32>,
+    pub max_height:    Option<f32>,
     pub direction:     Option<LayoutDirection>,
     pub align_items:   Option<iced::Alignment>,
     pub content_align: Option<ContentAlign>,
+
+    pub flex_grow:     Option<u16>,
+
+    pub position:      Option<Position>,
+    pub top:           Option<f32>,
+    pub right:         Option<f32>,
+    pub bottom:        Option<f32>,
+    pub left:          Option<f32>,
+
+    pub overflow_x:    Option<Overflow>,
+    pub overflow_y:    Option<Overflow>,
+    pub display:       Option<Display>,
+
+    pub opacity:       Option<f32>,
+    pub font_weight:   Option<u16>,
+    pub line_height:   Option<f32>,
+    pub text_align:    Option<TextAlign>,
 }
 
 impl ComputedStyle {
-    pub fn compute(
+pub fn compute(
-        inline: &HashMap<String, String>,
+        inline: &[(Cow<'_, str>, Cow<'_, str>)],
-        sheet:  Option<&HashMap<String, String>>,
+        matched_sheets: &[&HashMap<String, String>],
     ) -> Self {
+let overflow = lookup("overflow", inline, matched_sheets).and_then(parse_overflow);
         Self {
-            font_size:  lookup("font-size",   inline, sheet).and_then(parse_size),
+            font_size:  lookup("font-size",   inline, matched_sheets).and_then(parse_size),
-            color:      lookup("color",       inline, sheet).and_then(parse_color),
+            color:      lookup("color",       inline, matched_sheets).and_then(parse_color),
-            padding:    lookup("padding",     inline, sheet).and_then(parse_size),
+            padding:    lookup("padding",     inline, matched_sheets).and_then(parse_size),
-            background: lookup("background",  inline, sheet)
+            padding_top:    lookup("padding-top",    inline, matched_sheets).and_then(parse_size),
-                            .or_else(|| lookup("background-color", inline, sheet))
+            padding_right:  lookup("padding-right",  inline, matched_sheets).and_then(parse_size),
-                            .and_then(parse_color),
+            padding_bottom: lookup("padding-bottom", inline, matched_sheets).and_then(parse_size),
-            spacing:    lookup("spacing",     inline, sheet)
+            padding_left:   lookup("padding-left",   inline, matched_sheets).and_then(parse_size),
-                            .or_else(|| lookup("gap", inline, sheet))
-                            .and_then(parse_size),
-            border_radius: lookup("border-radius", inline, sheet).and_then(parse_size),
-            border_width:  lookup("border-width",  inline, sheet).and_then(parse_size),
-            border_color:  lookup("border-color",  inline, sheet).and_then(parse_color),
-            width:         lookup("width",         inline, sheet).and_then(parse_size),
 
-            direction:     lookup("direction",     inline, sheet).and_then(parse_direction),
+            margin:         lookup("margin",         inline, matched_sheets).and_then(parse_size),
-            align_items:   lookup("align-items",   inline, sheet).and_then(parse_alignment),
+            margin_top:     lookup("margin-top",     inline, matched_sheets).and_then(parse_size),
-            content_align: lookup("content-align", inline, sheet).and_then(parse_content_align),
+            margin_right:   lookup("margin-right",   inline, matched_sheets).and_then(parse_size),
+            margin_bottom:  lookup("margin-bottom",  inline, matched_sheets).and_then(parse_size),
+            margin_left:    lookup("margin-left",    inline, matched_sheets).and_then(parse_size),
+
+            background: lookup("background",  inline, matched_sheets)
+                            .or_else(|| lookup("background-color", inline, matched_sheets))
+                            .and_then(parse_color),
+            spacing:    lookup("spacing",     inline, matched_sheets)
+                            .or_else(|| lookup("gap", inline, matched_sheets))
+                            .and_then(parse_size),
+            border_radius: lookup("border-radius", inline, matched_sheets).and_then(parse_size),
+            border_width:  lookup("border-width",  inline, matched_sheets).and_then(parse_size),
+            border_color:  lookup("border-color",  inline, matched_sheets).and_then(parse_color),
+
+            width:      lookup("width",      inline, matched_sheets).and_then(parse_length),
+            height:     lookup("height",     inline, matched_sheets).and_then(parse_length),
+
+            min_width:  lookup("min-width",  inline, matched_sheets).and_then(parse_size),
+            max_width:  lookup("max-width",  inline, matched_sheets).and_then(parse_size),
+            min_height: lookup("min-height", inline, matched_sheets).and_then(parse_size),
+            max_height: lookup("max-height", inline, matched_sheets).and_then(parse_size),
+
+            direction:     lookup("direction",     inline, matched_sheets).and_then(parse_direction),
+            align_items:   lookup("align-items",   inline, matched_sheets).and_then(parse_alignment),
+            content_align: lookup("content-align", inline, matched_sheets).and_then(parse_content_align),
+
+            flex_grow:     lookup("flex-grow",     inline, matched_sheets)
+                                .and_then(|s| s.trim().parse::<f32>().ok())
+                                .map(|v| v as u16),
+
+            position:      lookup("position",      inline, matched_sheets).and_then(parse_position),
+            top:           lookup("top",           inline, matched_sheets).and_then(parse_size),
+            right:         lookup("right",         inline, matched_sheets).and_then(parse_size),
+            bottom:        lookup("bottom",        inline, matched_sheets).and_then(parse_size),
+            left:          lookup("left",          inline, matched_sheets).and_then(parse_size),
+
+            overflow_x: lookup("overflow-x", inline, matched_sheets)
+                            .and_then(parse_overflow)
+                            .or(overflow),
+
+            overflow_y: lookup("overflow-y", inline, matched_sheets)
+                            .and_then(parse_overflow)
+                            .or(overflow),
+
+            display:    lookup("display",    inline, matched_sheets).and_then(parse_display),
+
+            opacity:     lookup("opacity",      inline, matched_sheets).and_then(parse_opacity),
+            font_weight: lookup("font-weight",  inline, matched_sheets).and_then(parse_font_weight),
+            line_height: lookup("line-height",  inline, matched_sheets).and_then(parse_size),
+            text_align:  lookup("text-align",   inline, matched_sheets).and_then(parse_text_align),
         }
     }
+
+    pub fn apply_overrides(&mut self, sheet: &HashMap<String, String>) {
+        struct Override<'a>(&'a HashMap<String, String>);
+        impl<'a> Override<'a> {
+            fn get(&self, key: &str) -> Option<&'a str> { self.0.get(key).map(|s| s.as_str()) }
+        }
+        let ov = Override(sheet);
+
+        if let Some(v) = ov.get("font-size")       { self.font_size = parse_size(v); }
+        if let Some(v) = ov.get("color")            { self.color = parse_color(v); }
+        if let Some(v) = ov.get("padding")          { self.padding = parse_size(v); }
+        if let Some(v) = ov.get("padding-top")      { self.padding_top = parse_size(v); }
+        if let Some(v) = ov.get("padding-right")    { self.padding_right = parse_size(v); }
+        if let Some(v) = ov.get("padding-bottom")   { self.padding_bottom = parse_size(v); }
+        if let Some(v) = ov.get("padding-left")     { self.padding_left = parse_size(v); }
+        if let Some(v) = ov.get("margin")           { self.margin = parse_size(v); }
+        if let Some(v) = ov.get("margin-top")       { self.margin_top = parse_size(v); }
+        if let Some(v) = ov.get("margin-right")     { self.margin_right = parse_size(v); }
+        if let Some(v) = ov.get("margin-bottom")    { self.margin_bottom = parse_size(v); }
+        if let Some(v) = ov.get("margin-left")      { self.margin_left = parse_size(v); }
+        if let Some(v) = ov.get("background").or_else(|| ov.get("background-color")) {
+            self.background = parse_color(v);
+        }
+        if let Some(v) = ov.get("spacing").or_else(|| ov.get("gap")) {
+            self.spacing = parse_size(v);
+        }
+        if let Some(v) = ov.get("border-radius")    { self.border_radius = parse_size(v); }
+        if let Some(v) = ov.get("border-width")     { self.border_width = parse_size(v); }
+        if let Some(v) = ov.get("border-color")     { self.border_color = parse_color(v); }
+        if let Some(v) = ov.get("width")            { self.width = parse_length(v); }
+        if let Some(v) = ov.get("height")           { self.height = parse_length(v); }
+        if let Some(v) = ov.get("direction")        { self.direction = parse_direction(v); }
+        if let Some(v) = ov.get("align-items")      { self.align_items = parse_alignment(v); }
+        if let Some(v) = ov.get("content-align")    { self.content_align = parse_content_align(v); }
+        if let Some(v) = ov.get("flex-grow")        { self.flex_grow = v.trim().parse::<f32>().ok().map(|x| x as u16); }
+        if let Some(v) = ov.get("position")         { self.position = parse_position(v); }
+        if let Some(v) = ov.get("top")              { self.top = parse_size(v); }
+        if let Some(v) = ov.get("right")            { self.right = parse_size(v); }
+        if let Some(v) = ov.get("bottom")           { self.bottom = parse_size(v); }
+        if let Some(v) = ov.get("left")             { self.left = parse_size(v); }
+        if let Some(v) = ov.get("overflow")         { let o = parse_overflow(v);
+            if o.is_some() { self.overflow_x = o; self.overflow_y = o; } }
+        if let Some(v) = ov.get("overflow-x")       { self.overflow_x = parse_overflow(v); }
+        if let Some(v) = ov.get("overflow-y")       { self.overflow_y = parse_overflow(v); }
+        if let Some(v) = ov.get("display")          { self.display = parse_display(v); }
+        if let Some(v) = ov.get("opacity")          { self.opacity = parse_opacity(v); }
+        if let Some(v) = ov.get("font-weight")      { self.font_weight = parse_font_weight(v); }
+        if let Some(v) = ov.get("line-height")      { self.line_height = parse_size(v); }
+        if let Some(v) = ov.get("text-align")       { self.text_align = parse_text_align(v); }
+    }
 }
 
+
 #[inline]
 fn lookup<'a>(
     key:    &str,
-    inline: &'a HashMap<String, String>,
+    inline: &'a [(Cow<'_, str>, Cow<'_, str>)],
-    sheet:  Option<&'a HashMap<String, String>>,
+    matched_sheets: &[&'a HashMap<String, String>],
 ) -> Option<&'a str> {
-    if let Some(v) = inline.get(key) {
+    for (k, v) in inline {
-        return Some(v.as_str());
+        if **k == *key { return Some(v.as_ref()); }
+        if k.len() == key.len() + 6
+            && k.starts_with("style:")
+            && &k[6..] == key
+        {
+            return Some(v.as_ref());
+        }
     }
-    if let Some(v) = inline.get(&format!("style:{key}")) {
+    for sheet in matched_sheets.iter().rev() {
-        return Some(v.as_str());
+        if let Some(v) = sheet.get(key) {
+            return Some(v.as_str());
+        }
     }
-    sheet.and_then(|s| s.get(key)).map(String::as_str)
+    None
 }
 
+
+pub fn parse_overflow(s: &str) -> Option<Overflow> {
+    let s = s.trim();
+    if s.eq_ignore_ascii_case("visible") { Some(Overflow::Visible) }
+    else if s.eq_ignore_ascii_case("hidden") { Some(Overflow::Hidden) }
+    else if s.eq_ignore_ascii_case("scroll") { Some(Overflow::Scroll) }
+    else if s.eq_ignore_ascii_case("auto") { Some(Overflow::Auto) }
+    else { None }
+}
+
+pub fn parse_position(s: &str) -> Option<Position> {
+    let s = s.trim();
+    if s.eq_ignore_ascii_case("fixed") { Some(Position::Fixed) }
+    else if s.eq_ignore_ascii_case("sticky") { Some(Position::Sticky) }
+    else if s.eq_ignore_ascii_case("absolute") { Some(Position::Absolute) }
+    else if s.eq_ignore_ascii_case("relative") { Some(Position::Relative) }
+    else if s.eq_ignore_ascii_case("static") { Some(Position::Static) }
+    else { None }
+}
+
+
+pub fn parse_length(s: &str) -> Option<iced::Length> {
+    let s = s.trim();
+
+    if s.eq_ignore_ascii_case("fill") || s.eq_ignore_ascii_case("100%") ||
+       s.eq_ignore_ascii_case("100vw") || s.eq_ignore_ascii_case("100vh") ||
+       s.eq_ignore_ascii_case("stretch") {
+        return Some(iced::Length::Fill);
+    }
+    if s.eq_ignore_ascii_case("shrink") || s.eq_ignore_ascii_case("fit-content") || s.eq_ignore_ascii_case("auto") {
+        return Some(iced::Length::Shrink);
+    }
+
+    let val = s.trim_end_matches(|c: char| c.is_alphabetic() || c == '%').parse::<f32>().ok()?;
+
+    if s.ends_with('%') {
+        if val >= 100.0 {
+            Some(iced::Length::Fill)
+        } else {
+            Some(iced::Length::FillPortion(val as u16))
+        }
+    } else {
+        Some(iced::Length::Fixed(val))
+    }
+}
+
+
 pub fn parse_color(s: &str) -> Option<iced::Color> {
     let s = s.trim();
 
@@ -148,36 +899,91 @@ pub enum ContentAlign {
     End,
 }
 
-pub fn parse_direction(s: &str) -> Option<LayoutDirection> {
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-    match s.trim().to_lowercase().as_str() {
+pub enum TextAlign {
-        "horizontal" | "row" => Some(LayoutDirection::Row),
+    Left,
-        "vertical" | "column" => Some(LayoutDirection::Column),
+    Center,
-        "grid" => Some(LayoutDirection::Grid),
+    Right,
-        _ => None,
+}
+
+impl From<TextAlign> for iced::alignment::Horizontal {
+    fn from(ta: TextAlign) -> Self {
+        match ta {
+            TextAlign::Left   => iced::alignment::Horizontal::Left,
+            TextAlign::Center => iced::alignment::Horizontal::Center,
+            TextAlign::Right  => iced::alignment::Horizontal::Right,
+        }
     }
 }
 
+pub fn parse_direction(s: &str) -> Option<LayoutDirection> {
+    let s = s.trim();
+    if s.eq_ignore_ascii_case("horizontal") || s.eq_ignore_ascii_case("row") { Some(LayoutDirection::Row) }
+    else if s.eq_ignore_ascii_case("vertical") || s.eq_ignore_ascii_case("column") { Some(LayoutDirection::Column) }
+    else if s.eq_ignore_ascii_case("grid") { Some(LayoutDirection::Grid) }
+    else { None }
+}
+
 pub fn parse_alignment(s: &str) -> Option<iced::Alignment> {
-    match s.trim().to_lowercase().as_str() {
+    let s = s.trim();
-        "start" => Some(iced::Alignment::Start),
+    if s.eq_ignore_ascii_case("start") { Some(iced::Alignment::Start) }
-        "center" => Some(iced::Alignment::Center),
+    else if s.eq_ignore_ascii_case("center") { Some(iced::Alignment::Center) }
-        "end" => Some(iced::Alignment::End),
+    else if s.eq_ignore_ascii_case("end") { Some(iced::Alignment::End) }
-        _ => None,
+    else { None }
-    }
 }
 
 pub fn parse_content_align(s: &str) -> Option<ContentAlign> {
-    match s.trim().to_lowercase().as_str() {
+    let s = s.trim();
-        "start" | "left" | "top" => Some(ContentAlign::Start),
+    if s.eq_ignore_ascii_case("start") || s.eq_ignore_ascii_case("left") || s.eq_ignore_ascii_case("top") { Some(ContentAlign::Start) }
-        "center" => Some(ContentAlign::Center),
+    else if s.eq_ignore_ascii_case("center") { Some(ContentAlign::Center) }
-        "end" | "right" | "bottom" => Some(ContentAlign::End),
+    else if s.eq_ignore_ascii_case("end") || s.eq_ignore_ascii_case("right") || s.eq_ignore_ascii_case("bottom") { Some(ContentAlign::End) }
-        _ => None,
+    else { None }
+}
+
+pub fn parse_display(s: &str) -> Option<Display> {
+    let s = s.trim();
+    if s.eq_ignore_ascii_case("none")    { Some(Display::None) }
+    else if s.eq_ignore_ascii_case("block")  { Some(Display::Block) }
+    else if s.eq_ignore_ascii_case("flex")   { Some(Display::Flex) }
+    else if s.eq_ignore_ascii_case("grid")   { Some(Display::Grid) }
+    else if s.eq_ignore_ascii_case("inline") { Some(Display::Inline) }
+    else { None }
+}
+
+pub fn parse_opacity(s: &str) -> Option<f32> {
+    let v = s.trim().parse::<f32>().ok()?;
+    Some(v.clamp(0.0, 1.0))
+}
+
+pub fn parse_font_weight(s: &str) -> Option<u16> {
+    let s = s.trim();
+    match s {
+        "normal"  => Some(400),
+        "bold"    => Some(700),
+        "lighter" => Some(300),
+        "bolder"  => Some(900),
+        _ => s.parse::<f32>().ok().map(|v| v as u16),
     }
 }
 
+pub fn parse_text_align(s: &str) -> Option<TextAlign> {
+    let s = s.trim();
+    if s.eq_ignore_ascii_case("left")   { Some(TextAlign::Left) }
+    else if s.eq_ignore_ascii_case("center") { Some(TextAlign::Center) }
+    else if s.eq_ignore_ascii_case("right")  { Some(TextAlign::Right) }
+    else { None }
+}
+
 pub fn parse_size(s: &str) -> Option<f32> {
-    s.trim()
+    let s = s.trim();
-        .trim_end_matches(|c: char| c.is_alphabetic() || c == '%')
+    if s.ends_with('%') || s.eq_ignore_ascii_case("auto") ||
+       s.eq_ignore_ascii_case("fill") || s.eq_ignore_ascii_case("stretch") {
+        return None;
+    }
+    if s.eq_ignore_ascii_case("vw") || s.eq_ignore_ascii_case("vh") {
+        return None;
+    }
+    s.trim_end_matches(|c: char| c.is_alphabetic())
         .parse::<f32>()
         .ok()
 }

src/interpreter/types.rs

@@ -1,38 +1,45 @@
+use std::borrow::Cow;
 use std::collections::HashMap;
 use std::fmt;
 
 use super::style::{ComputedStyle, StyleSheet};
 
 #[derive(Debug, Clone)]
-pub struct Element {
+pub struct Element<'a> {
-    pub type_name:      String,
+    pub type_name:      &'a str,
-    pub properties:     HashMap<String, String>,
+    pub properties: Vec<(Cow<'a, str>, Cow<'a, str>)>,
-    pub children:       Vec<Element>,
+    pub children:       Vec<Element<'a>>,
     pub computed_style: ComputedStyle,
 }
 
-impl Element {
+impl<'a> Element<'a> {
-    pub fn new(type_name: String) -> Self {
+    pub fn id(&self) -> Option<&str> {
+        self.properties.iter().find_map(|(k, v)| {
+            if **k == *"id" { Some(v.as_ref()) } else { None }
+        })
+    }
+
+    pub fn new(type_name: &'a str) -> Self {
         Self {
             type_name,
-            properties:     HashMap::new(),
+            properties:     Vec::with_capacity(8),
-            children:       Vec::new(),
+            children:       Vec::with_capacity(4),
             computed_style: ComputedStyle::default(),
         }
     }
 }
 
 #[derive(Debug, Clone)]
-pub struct ComponentDef {
+pub struct ComponentDef<'a> {
     pub name:     String,
     pub params:   Vec<(String, String)>,
-    pub children: Vec<Element>,
+    pub children: Vec<Element<'a>>,
 }
 
 #[derive(Debug, Clone)]
-pub struct Document {
+pub struct Document<'a> {
-    pub roots:        Vec<Element>,
+    pub roots:        Vec<Element<'a>>,
-    pub components:   HashMap<String, ComponentDef>,
+    pub components:   HashMap<String, ComponentDef<'a>>,
     pub variables:    HashMap<String, String>,
     pub rhei_scripts: Vec<String>,
     pub stylesheet:   StyleSheet,

src/main.rs

@@ -11,6 +11,7 @@ pub enum Message {
     InputChanged(Option<String>, String),
     ToggleChanged(Option<String>, bool),
     SliderChanged(Option<String>, f64),
+    WindowScrolled(f32),
 }
 
 #[derive(Parser)]