/* =========================================================================
   GPUX Official Website & Documentation Design System
   Inspired by:
   - egoist/(Architectural hairline frame, tabular stats, UI Preview book, Benchmarks bars)
   - lynxjs.org (Dual-platform Native GPU visual identity, Interactive Simulator, AI-friendly docs)
   - v2.tauri.app (Deep documentation sidebar, OS tabs, System Capabilities & Plugin Matrix)
   ========================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap");

:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Light Mode Tokens — Clean Architectural Alabaster & Slate */
  --bg: #ffffff;
  --bg-subtle: #f8f9fb;
  --bg-card: #ffffff;
  --bg-code: #f4f6f9;
  --bg-elevated: #ffffff;
  --fg: #090b10;
  --fg-secondary: #333947;
  --muted-fg: #646d80;
  --border: #e5e8ef;
  --border-strong: #cdd3df;

  /* Brand & Accent Colors — Precision Rust Amber & Industrial Slate */
  --brand: #ea580c;
  --brand-ink: #c2410c;
  --brand-glow: rgba(234, 88, 12, 0.1);
  --cyan: #0284c7;
  --better: #15803d;
  --worse: #dc2626;

  /* Cohesive Hardware Accent Tokens (No Neon Pink/Magenta) */
  --bang-1: #ea580c;
  --bang-2: #0284c7;
  --bang-3: #15803d;
  --bang-4: #334155;
  --bang-5: #475569;
  --bang-6: #d97706;

  /* Benchmark Framework Bar Colors */
  --bench-gpux: #ea580c;
  --bench-gpui: #d97706;
  --bench-wails: #0284c7;
  --bench-tauri: #475569;
  --bench-electron: #64748b;

  /* Syntax Highlighting */
  --shiki-kw: #cf222e;
  --shiki-ty: #953800;
  --shiki-fn: #6639ba;
  --shiki-str: #0a3069;
  --shiki-num: #0550ae;
  --shiki-cm: #6e7781;
  --shiki-mac: #116329;

  color-scheme: light;
}

html.dark {
  /* Dark Mode Tokens — Deep Obsidian Carbon & Specular Hairlines */
  --bg: #07080b;
  --bg-subtle: #0c0e14;
  --bg-card: #0a0c11;
  --bg-code: #050608;
  --bg-elevated: #10131b;
  --fg: #f3f5f8;
  --fg-secondary: #c5cbd6;
  --muted-fg: #7e8798;
  --border: rgba(255, 255, 255, 0.075);
  --border-strong: rgba(255, 255, 255, 0.14);

  --brand: #ff6b2b;
  --brand-ink: #ff854d;
  --brand-glow: rgba(255, 107, 43, 0.12);
  --cyan: #38bdf8;
  --better: #34d399;
  --worse: #f87171;

  --bang-1: #ff6b2b;
  --bang-2: #38bdf8;
  --bang-3: #34d399;
  --bang-4: #e2e8f0;
  --bang-5: #94a3b8;
  --bang-6: #fbbf24;

  --bench-gpux: #ff6b2b;
  --bench-gpui: #f59e0b;
  --bench-wails: #38bdf8;
  --bench-tauri: #64748b;
  --bench-electron: #475569;

  --shiki-kw: #ff7b72;
  --shiki-ty: #ffa657;
  --shiki-fn: #d2a8ff;
  --shiki-str: #a5d6ff;
  --shiki-num: #79c0ff;
  --shiki-cm: #6e7681;
  --shiki-mac: #7ee787;

  color-scheme: dark;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
}

::selection {
  background: var(--brand-glow);
  color: var(--brand-ink);
}

a {
  color: inherit;
  text-decoration: none;
}

button, input {
  font-family: inherit;
}

/* GPUX Signature Architectural Column between two hairlines */
.frame {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}

/* Small-caps monospace label (GPUX .label utility) */
.label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted-fg);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16.5px;
  letter-spacing: -0.03em;
  color: var(--fg);
  white-space: nowrap;
  flex-shrink: 0;
}

.wordmark-logo {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(255, 107, 43, 0.2);
}

.wordmark-bangs {
  display: none !important;
}

.wordmark-version {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 1px 6px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-subtle);
  color: var(--muted-fg);
}

/* Sticky Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  padding: 6px 10px;
  border-radius: 7px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted-fg);
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.nav-link:hover {
  color: var(--fg);
  background: var(--bg-subtle);
}

.nav-link.active {
  color: var(--fg);
  font-weight: 600;
  background: var(--bg-subtle);
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.search-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 34px;
  padding: 0 11px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--muted-fg);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.search-btn:hover {
  border-color: var(--border-strong);
  color: var(--fg);
}

.search-kbd {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted-fg);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.icon-btn:hover {
  color: var(--fg);
  border-color: var(--border-strong);
  background: var(--bg-subtle);
}

.mobile-menu-btn {
  display: none;
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 58px;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
}

/* =========================================================================
   Hero Section & 3D Interactive Canvas
   ========================================================================= */
.hero-section {
  position: relative;
  padding: 84px 48px 92px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(ellipse 80% 55% at 50% -15%, var(--brand-glow), transparent 70%),
    radial-gradient(circle at 1px 1px, var(--border) 1px, transparent 0);
  background-size: 100% 100%, 24px 24px;
}

@media (max-width: 680px) {
  .hero-section {
    padding: 48px 20px 56px;
  }
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--bg-subtle) 88%, transparent);
  backdrop-filter: blur(8px);
  transition: border-color 0.15s;
}

.hero-badge:hover {
  border-color: var(--brand);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 8px var(--brand);
}

.hero-title {
  margin-top: 24px;
  font-size: clamp(2.4rem, 4.6vw, 3.75rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.hero-title-muted {
  display: block;
  color: var(--muted-fg);
  font-weight: 700;
  margin-top: 6px;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--fg) 0%, #fdba74 42%, var(--brand) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin-top: 22px;
  max-width: 590px;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--muted-fg);
}

.hero-lead strong {
  color: var(--fg);
  font-weight: 600;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.install-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 42px;
  padding: 0 14px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--bg-code);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--fg);
  cursor: pointer;
  transition: border-color 0.15s;
}

.install-box:hover {
  border-color: var(--brand);
}

.install-prompt {
  color: var(--brand);
  user-select: none;
  font-weight: 700;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: 9px;
  background: var(--fg);
  color: var(--bg);
  font-size: 13.5px;
  font-weight: 600;
  transition: transform 0.15s, opacity 0.15s;
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 16px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--fg);
  font-size: 13.5px;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}

.btn-secondary:hover {
  border-color: var(--brand);
  background: var(--bg-subtle);
}

/* Hero Right 3D GPU Core Canvas Card */
.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.gpu-stage {
  position: relative;
  width: 100%;
  max-width: 450px;
  aspect-ratio: 1 / 0.92;
  border-radius: 16px;
  border: 1px solid var(--border-strong);
  background:
    radial-gradient(circle at 50% 44%, var(--brand-glow), transparent 68%),
    var(--bg-card);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 24px 64px -12px rgba(0, 0, 0, 0.55);
}

#gpux-hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#gpux-hero-canvas:active {
  cursor: grabbing;
}

.gpu-stage-hud {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-card) 85%, transparent);
  backdrop-filter: blur(8px);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-fg);
  pointer-events: none;
}

/* =========================================================================
   4-Column Telemetry Strip (GPUX `<dl>` Grid)
   ========================================================================= */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 768px) {
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-cell {
  background: var(--bg);
  padding: 26px 36px;
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 6px;
}

@media (max-width: 640px) {
  .stat-cell {
    padding: 20px;
  }
}

.stat-val {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}

.stat-unit {
  margin-left: 4px;
  font-size: 15px;
  font-weight: 400;
  color: var(--muted-fg);
}

/* =========================================================================
   Interactive Split Code + Live Native GPU Simulator (GPUX + Lynx Hybrid)
   ========================================================================= */
.workbench-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: var(--bg-code);
}

.workbench-tabs {
  display: flex;
  overflow-x: auto;
}

.workbench-tab {
  padding: 13px 22px;
  border: none;
  border-right: 1px solid var(--border);
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted-fg);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.workbench-tab:hover {
  color: var(--fg);
}

.workbench-tab.active {
  background: var(--bg);
  color: var(--fg);
  border-bottom-color: var(--brand);
}

.workbench-split {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  border-bottom: 1px solid var(--border);
  background: var(--bg-code);
}

@media (max-width: 980px) {
  .workbench-split {
    grid-template-columns: 1fr;
  }
}

.code-pane {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

@media (max-width: 980px) {
  .code-pane {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

.code-pane-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 22px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted-fg);
}

.code-pane pre {
  padding: 16px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.56;
  tab-size: 4;
}

.simulator-pane {
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.simulator-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 22px;
  border-bottom: 1px solid var(--border);
}

.device-pills {
  display: inline-flex;
  gap: 4px;
  padding: 2px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
}

.device-pill {
  padding: 3px 9px;
  border-radius: 5px;
  border: none;
  background: transparent;
  color: var(--muted-fg);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
}

.device-pill.active {
  background: var(--bg-card);
  color: var(--fg);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

.simulator-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 16px;
}

/* macOS / Mobile Native GPU Window Preview Frame (GPUX .ui-preview) */
.ui-preview {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22);
  transition: max-width 0.25s ease, margin 0.25s ease;
}

.ui-preview.mobile-frame {
  max-width: 310px;
  margin: 0 auto;
  border-radius: 26px;
  border-width: 3px;
}

.ui-preview-titlebar {
  position: relative;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

.ui-preview-lights {
  position: absolute;
  left: 12px;
  display: flex;
  gap: 7px;
}

.ui-preview-lights i {
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.ui-preview-lights .close { background: #ff5f57; }
.ui-preview-lights .minimize { background: #febc2e; }
.ui-preview-lights .zoom { background: #28c840; }

.ui-preview-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted-fg);
  font-family: var(--font-mono);
}

.ui-preview-fps {
  position: absolute;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--better);
  font-weight: 600;
}

.ui-preview-canvas {
  padding: 22px;
}

/* =========================================================================
   Section Headers & Architectural Feature Grid (GPUX 3-Column Grid)
   ========================================================================= */
.section-header {
  padding: 64px 40px 36px;
  border-bottom: 1px solid var(--border);
}

@media (max-width: 680px) {
  .section-header {
    padding: 44px 20px 28px;
  }
}

.section-title {
  margin-top: 12px;
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section-desc {
  margin-top: 12px;
  max-width: 680px;
  font-size: 15.5px;
  color: var(--muted-fg);
}

.hairline-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 960px) {
  .hairline-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .hairline-grid-3 {
    grid-template-columns: 1fr;
  }
}

.hairline-card {
  background: var(--bg);
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.15s;
}

a.hairline-card:hover {
  background: var(--bg-subtle);
}

.hairline-card-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--fg);
}

a.hairline-card:hover .hairline-card-title {
  color: var(--brand);
}

.hairline-card-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted-fg);
}

/* =========================================================================
   Documentation & Native UI Book Layout (3-Column: Sidebar + Article + TOC)
   ========================================================================= */
.docs-shell {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr) 220px;
  min-height: calc(100vh - 58px);
}

@media (max-width: 1140px) {
  .docs-shell {
    grid-template-columns: 250px minmax(0, 1fr);
  }
  .docs-toc {
    display: none;
  }
}

@media (max-width: 820px) {
  .docs-shell {
    grid-template-columns: 1fr;
  }
  .docs-sidebar {
    display: none;
  }
  .docs-sidebar.open {
    display: block;
    position: fixed;
    top: 58px;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 45;
    background: var(--bg-elevated);
    box-shadow: 12px 0 36px rgba(0,0,0,0.4);
  }
}

.docs-sidebar {
  position: sticky;
  top: 58px;
  height: calc(100vh - 58px);
  overflow-y: auto;
  border-right: 1px solid var(--border);
  padding: 28px 20px 48px;
  background: var(--bg);
}

.sidebar-section {
  margin-bottom: 26px;
}

.sidebar-section-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-fg);
  padding: 0 10px;
  margin-bottom: 8px;
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: 13.5px;
  color: var(--fg-secondary);
  transition: background 0.12s, color 0.12s;
}

.sidebar-link:hover {
  background: var(--bg-subtle);
  color: var(--fg);
}

.sidebar-link.active {
  background: var(--brand-glow);
  color: var(--brand-ink);
  font-weight: 600;
}

.sidebar-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--muted-fg);
}

/* Docs Main Prose Article */
.docs-article {
  max-width: 820px;
  padding: 44px 48px 88px;
  min-width: 0;
}

@media (max-width: 680px) {
  .docs-article {
    padding: 28px 20px 64px;
  }
}

.prose h1 {
  margin-top: 10px;
  font-size: clamp(1.95rem, 3.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.prose-summary {
  margin-top: 14px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted-fg);
}

.prose h2 {
  margin-top: 52px;
  margin-bottom: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.prose h3 {
  margin-top: 32px;
  margin-bottom: 10px;
  font-size: 1.12rem;
  font-weight: 600;
}

.prose p, .prose ul, .prose ol {
  margin: 16px 0;
  font-size: 15.2px;
  line-height: 1.75;
  color: var(--fg-secondary);
}

.prose ul, .prose ol {
  padding-left: 24px;
}

.prose li {
  margin: 6px 0;
}

.prose :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--fg);
}

/* Code Block with Language Label & Hover Copy Button (GPUX .code-block) */
.code-block {
  position: relative;
  margin: 20px 0;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-code);
  overflow: hidden;
}

.code-block pre {
  padding: 18px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  tab-size: 4;
}

.code-lang {
  position: absolute;
  top: 10px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-fg);
  pointer-events: none;
  transition: opacity 0.15s;
}

.code-block:hover .code-lang {
  opacity: 0;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--muted-fg);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s;
}

.code-block:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.copy-btn:hover {
  color: var(--fg);
  border-color: var(--border-strong);
}

/* Docs Table */
.table-wrap {
  margin: 22px 0;
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13.5px;
}

.table-wrap th {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-fg);
  background: var(--bg-subtle);
}

.table-wrap td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--fg-secondary);
  vertical-align: top;
}

.table-wrap tr:last-child td {
  border-bottom: none;
}

/* Docs Index Cards (GPUX .doc-cards) */
.doc-cards {
  margin: 24px 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--border);
}

@media (max-width: 640px) {
  .doc-cards {
    grid-template-columns: 1fr;
  }
}

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s;
}

@media (min-width: 641px) {
  .doc-card:nth-child(odd) {
    border-right: 1px solid var(--border);
    padding-right: 24px;
  }
  .doc-card:nth-child(even) {
    padding-left: 24px;
  }
}

.doc-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  transition: color 0.15s;
}

.doc-card:hover .doc-card-title {
  color: var(--brand);
}

.doc-card-desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--muted-fg);
}

/* Prev / Next Pager */
.doc-pager {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.pager-link {
  background: var(--bg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background 0.15s;
}

.pager-link:hover {
  background: var(--bg-subtle);
}

.pager-link.next {
  align-items: flex-end;
  text-align: right;
}

/* Right TOC */
.docs-toc {
  position: sticky;
  top: 58px;
  height: calc(100vh - 58px);
  overflow-y: auto;
  border-left: 1px solid var(--border);
  padding: 32px 20px;
}

.toc-list {
  margin-top: 12px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-list a {
  font-size: 12.5px;
  color: var(--muted-fg);
  transition: color 0.15s;
}

.toc-list a:hover {
  color: var(--brand);
}

/* =========================================================================
   Benchmarks Horizontal Bars (GPUX /benchmarks Style)
   ========================================================================= */
.bench-section {
  border-bottom: 1px solid var(--border);
}

.bench-section-head {
  padding: 40px 40px 24px;
}

.bench-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px 48px;
  padding: 0 40px 44px;
}

@media (max-width: 860px) {
  .bench-section-head, .bench-grid {
    padding-left: 20px;
    padding-right: 20px;
  }
  .bench-grid {
    grid-template-columns: 1fr;
  }
}

.bench-figure h3 {
  font-size: 14.5px;
  font-weight: 600;
}

.bench-figure p {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted-fg);
}

.bench-bars {
  margin-top: 14px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bench-row {
  position: relative;
  display: grid;
  grid-template-columns: 152px 1fr 76px;
  align-items: center;
  gap: 10px;
  padding: 3px 0;
}

.bench-label {
  font-size: 12.5px;
  color: var(--fg-secondary);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bench-track {
  height: 11px;
  background: var(--bg-subtle);
  border-radius: 4px;
  overflow: hidden;
}

.bench-fill {
  display: block;
  height: 100%;
  border-radius: 0 4px 4px 0;
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.bench-value {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  color: var(--fg);
}

.bench-tooltip {
  pointer-events: none;
  position: absolute;
  right: 0;
  bottom: 100%;
  margin-bottom: 4px;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
  z-index: 20;
}

.bench-row:hover .bench-tooltip {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================================
   Showcase Cards & Plugin Matrix
   ========================================================================= */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 980px) {
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .showcase-grid { grid-template-columns: 1fr; }
}

.showcase-card {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  transition: background 0.15s;
}

.showcase-card:hover {
  background: var(--bg-subtle);
}

.showcase-thumb {
  aspect-ratio: 16 / 10;
  width: 100%;
  border-bottom: 1px solid var(--border);
  background: var(--bg-code);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.showcase-body {
  padding: 20px 24px;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
}

/* Syntax Token Helpers */
.kw { color: var(--shiki-kw); font-weight: 600; }
.ty { color: var(--shiki-ty); }
.fn { color: var(--shiki-fn); }
.str { color: var(--shiki-str); }
.num { color: var(--shiki-num); }
.cm { color: var(--shiki-cm); font-style: italic; }
.mac { color: var(--shiki-mac); }

/* Search Command Palette Modal (Ctrl+K) */
.search-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(5px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 11vh;
}

.search-backdrop.open {
  display: flex;
}

.search-dialog {
  width: 100%;
  max-width: 600px;
  margin: 0 16px;
  border-radius: 14px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.5);
  overflow: hidden;
}

.search-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 15px;
  color: var(--fg);
}

.search-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 8px;
}

.search-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  transition: background 0.12s;
}

.search-item:hover {
  background: var(--bg-subtle);
}

/* Site Footer */
.site-footer {
  margin-top: auto;
  padding: 36px 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: var(--muted-fg);
}

@media (max-width: 680px) {
  .site-footer {
    padding: 28px 20px;
  }
}

/* =========================================================================
   Multi-Level Nested Sidebar Tree (Tauri v2 / Starlight Style)
   ========================================================================= */
.sidebar-details {
  margin-bottom: 18px;
}

.sidebar-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  transition: background 0.12s;
}

.sidebar-summary::-webkit-details-marker {
  display: none;
}

.sidebar-summary:hover {
  background: var(--bg-subtle);
}

.sidebar-caret {
  font-size: 10px;
  color: var(--muted-fg);
  transition: transform 0.18s ease;
}

.sidebar-details[open] > .sidebar-summary .sidebar-caret {
  transform: rotate(90deg);
}

.sidebar-group {
  margin-top: 4px;
  padding-left: 10px;
  border-left: 1px solid var(--border);
  margin-left: 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-subdetails {
  margin: 3px 0;
}

.sidebar-subsummary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--fg-secondary);
}

.sidebar-subsummary::-webkit-details-marker {
  display: none;
}

.sidebar-subsummary:hover {
  background: var(--bg-subtle);
  color: var(--fg);
}

.sidebar-subgroup {
  margin-top: 2px;
  padding-left: 10px;
  border-left: 1px dashed var(--border);
  margin-left: 10px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* =========================================================================
   9-Ecosystem Switcher Tabs & Callout Admonitions
   ========================================================================= */
.eco-tabs {
  margin: 20px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-code);
  overflow: hidden;
}

.eco-tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 6px 10px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.eco-tab-btn {
  padding: 5px 11px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--muted-fg);
  cursor: pointer;
  transition: all 0.12s;
}

.eco-tab-btn:hover {
  color: var(--fg);
  background: var(--bg-card);
}

.eco-tab-btn.active {
  color: var(--brand-ink);
  background: var(--bg-card);
  border-color: var(--border-strong);
  font-weight: 600;
}

.eco-tab-panel {
  display: none;
  position: relative;
}

.eco-tab-panel.active {
  display: block;
}

.eco-tab-panel pre {
  padding: 16px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
}

/* Callout Admonitions (Note / Tip / Warning / Danger) */
.callout {
  margin: 20px 0;
  padding: 14px 18px;
  border-radius: 9px;
  border: 1px solid var(--border);
  border-left-width: 4px;
  background: var(--bg-subtle);
  font-size: 14px;
}

.callout-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.callout.tip {
  border-left-color: var(--better);
}
.callout.tip .callout-title { color: var(--better); }

.callout.note {
  border-left-color: var(--cyan);
}
.callout.note .callout-title { color: var(--cyan); }

.callout.warn {
  border-left-color: var(--brand);
}
.callout.warn .callout-title { color: var(--brand); }

/* CLI Flag & Subcommand Reference Cards (Tauri v2 /reference/cli/ style) */
.cli-cmd-card {
  margin: 28px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-card);
  overflow: hidden;
}

.cli-cmd-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 20px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.cli-cmd-sig {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--fg);
}

.cli-cmd-body {
  padding: 16px 20px;
}

/* =========================================================================
   Header Social Icons, Multi-Language Switcher Dropdown & Community Matrix
   ========================================================================= */
.header-social-strip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

@media (max-width: 1180px) {
  .header-social-strip .icon-btn.social-extra {
    display: none;
  }
}

.lang-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--fg-secondary);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.lang-trigger:hover,
.lang-dropdown.open .lang-trigger {
  border-color: var(--border-strong);
  color: var(--fg);
  background: var(--bg-card);
}

.lang-caret {
  font-size: 10px;
  color: var(--muted-fg);
  transition: transform 0.15s;
}

.lang-dropdown.open .lang-caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 196px;
  padding: 6px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.35);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 120;
}

.lang-dropdown.open .lang-menu {
  display: flex;
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 7px 10px;
  border-radius: 7px;
  border: none;
  background: transparent;
  color: var(--fg-secondary);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.lang-option:hover {
  background: var(--bg-subtle);
  color: var(--fg);
}

.lang-option.active {
  background: var(--brand-glow);
  color: var(--brand-ink);
  font-weight: 600;
}

.lang-option-code {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted-fg);
}

.lang-option.active .lang-option-code {
  color: var(--brand-ink);
}

.lang-divider {
  height: 1px;
  margin: 4px 2px;
  background: var(--border);
}

.lang-help-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted-fg);
  transition: background 0.12s, color 0.12s;
}

.lang-help-link:hover {
  background: var(--bg-subtle);
  color: var(--brand-ink);
}

/* Community & Ecosystem Grid */
.community-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 1024px) {
  .community-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .community-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.community-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  background: var(--bg);
  transition: background 0.15s;
}

.community-card:hover {
  background: var(--bg-subtle);
}

.community-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--fg);
  font-weight: 700;
  font-size: 14.5px;
}

.community-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--fg);
  transition: color 0.15s, border-color 0.15s, transform 0.15s;
}

.community-card:hover .community-card-icon {
  color: var(--brand);
  border-color: var(--brand);
  transform: translateY(-1px);
}

.community-card-desc {
  font-size: 12.5px;
  color: var(--muted-fg);
  line-height: 1.5;
}

.footer-social-icons {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}



/* =========================================================================
   Platform Matrix & Hero Note (homepage)
   ========================================================================= */
.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted-fg);
}

.hero-note a {
  color: var(--fg-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.hero-note code {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--bg-code);
  border: 1px solid var(--border);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}

@media (max-width: 900px) {
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.platform-cell {
  background: var(--bg);
  padding: 28px 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background 0.15s;
}

.platform-cell:hover {
  background: var(--bg-subtle);
}

.platform-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  color: var(--fg);
}

.platform-icon svg {
  width: 22px;
  height: 22px;
}

.platform-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.platform-backend {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted-fg);
}

.platform-group {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-fg);
  opacity: 0.7;
}