/**
 * StyleSwift Community Website CSS
 * Design: Friendly-organic + lightly flat (亲和有机 + 轻度扁平)
 * Tokens aligned with extension/sidepanel/panel.css
 */

/* ============================================================
   1. CSS Variables — Design Token System
   ============================================================ */

:root {
  /* Brand Primary: Terracotta Orange (陶土橙) */
  --color-primary: oklch(63% 0.12 42);
  --color-primary-hover: oklch(57% 0.13 42);
  --color-primary-active: oklch(51% 0.14 42);
  --color-primary-light: oklch(96% 0.04 42);

  /* Backgrounds: Micro-warm White (微暖白) */
  --color-bg-primary: oklch(99% 0.002 78);
  --color-bg-secondary: oklch(97% 0.003 78);
  --color-bg-tertiary: oklch(94% 0.004 78);
  --color-bg-hover: oklch(96% 0.003 78);
  --color-bg-active: oklch(92% 0.005 78);

  /* Surface Layers */
  --color-surface-soft: oklch(97% 0.005 85);
  --color-surface-warm: oklch(94% 0.01 75);

  /* Text Colors (warm organic, hue 60) */
  --color-text-primary: oklch(20% 0.01 60);
  --color-text-secondary: oklch(45% 0.01 60);
  --color-text-tertiary: oklch(60% 0.008 60);
  --color-text-disabled: oklch(72% 0.006 60);
  --color-text-inverse: oklch(99% 0 0);

  /* Borders */
  --color-border: rgba(0, 0, 0, 0.06);
  --color-border-light: rgba(0, 0, 0, 0.04);
  --color-border-strong: rgba(0, 0, 0, 0.09);

  /* Status Colors */
  --color-success: #34c759;
  --color-success-bg: #e8f8ec;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-error: #ef4444;
  --color-error-bg: #fee2e2;
  --color-info: #3b82f6;
  --color-info-bg: #eff6ff;

  /* Metallic Inset Effects */
  --color-metal-highlight: rgba(255, 255, 255, 0.6);
  --color-metal-shadow: rgba(0, 0, 0, 0.04);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 48px;
  --spacing-4xl: 64px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Segoe UI', system-ui, sans-serif;
  --font-family-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
  --font-family-display: Georgia, 'Times New Roman', serif;

  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-md: 14px;
  --font-size-body: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 28px;
  --font-size-3xl: 36px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.65;

  /* Border Radius: Rounded Organic (圆润有机) */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Shadows: Lightweight & Warm */
  --shadow-xs: 0 1px 2px oklch(20% 0.01 60 / 0.03);
  --shadow-sm: 0 1px 4px oklch(20% 0.01 60 / 0.04);
  --shadow-md: 0 2px 8px oklch(20% 0.01 60 / 0.05);
  --shadow-lg: 0 4px 12px oklch(20% 0.01 60 / 0.06);
  --shadow-xl: 0 6px 16px oklch(20% 0.01 60 / 0.07);

  /* Gradients */
  --gradient-surface: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  --gradient-soft: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);

  /* Animation: Natural Deceleration, No Bounce */
  --duration-fast: 150ms;
  --duration-normal: 220ms;
  --duration-slow: 320ms;
  --easing-default: cubic-bezier(0.25, 0.1, 0.25, 1);
  --easing-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --easing-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --easing-in-out: cubic-bezier(0.45, 0, 0.55, 1);

  /* Z-index */
  --z-dropdown: 100;
  --z-modal: 200;
  --z-tooltip: 300;
  --z-notification: 400;
}

/* ============================================================
   1.5 Icon System — Lucide via Iconify mask-image
   ============================================================ */

.icon {
  display: inline-block;
  flex-shrink: 0;
  vertical-align: middle;
  background-color: currentColor;
  -webkit-mask-image: var(--icon-src);
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  -webkit-mask-position: center;
  mask-image: var(--icon-src);
  mask-repeat: no-repeat;
  mask-size: contain;
  mask-position: center;
}

.icon-search        { --icon-src: url("https://api.iconify.design/lucide/search.svg"); }
.icon-arrow-down    { --icon-src: url("https://api.iconify.design/lucide/arrow-down.svg"); }
.icon-upload        { --icon-src: url("https://api.iconify.design/lucide/upload.svg"); }
.icon-moon          { --icon-src: url("https://api.iconify.design/lucide/moon.svg"); }
.icon-sun           { --icon-src: url("https://api.iconify.design/lucide/sun.svg"); }
.icon-external-link { --icon-src: url("https://api.iconify.design/lucide/external-link.svg"); }
.icon-copy          { --icon-src: url("https://api.iconify.design/lucide/copy.svg"); }
.icon-download      { --icon-src: url("https://api.iconify.design/lucide/download.svg"); }
.icon-check         { --icon-src: url("https://api.iconify.design/lucide/check.svg"); }
.icon-chevron-left  { --icon-src: url("https://api.iconify.design/lucide/chevron-left.svg"); }
.icon-chevron-right { --icon-src: url("https://api.iconify.design/lucide/chevron-right.svg"); }
.icon-tag           { --icon-src: url("https://api.iconify.design/lucide/tag.svg"); }
.icon-user          { --icon-src: url("https://api.iconify.design/lucide/user.svg"); }
.icon-calendar      { --icon-src: url("https://api.iconify.design/lucide/calendar.svg"); }
.icon-sparkles      { --icon-src: url("https://api.iconify.design/lucide/sparkles.svg"); }
.icon-home          { --icon-src: url("https://api.iconify.design/lucide/home.svg"); }
.icon-grid          { --icon-src: url("https://api.iconify.design/lucide/grid-3x3.svg"); }
.icon-palette       { --icon-src: url("https://api.iconify.design/lucide/palette.svg"); }
.icon-code          { --icon-src: url("https://api.iconify.design/lucide/code-2.svg"); }
.icon-file-text     { --icon-src: url("https://api.iconify.design/lucide/file-text.svg"); }
.icon-clock         { --icon-src: url("https://api.iconify.design/lucide/clock.svg"); }
.icon-x             { --icon-src: url("https://api.iconify.design/lucide/x.svg"); }
.icon-download      { --icon-src: url("https://api.iconify.design/lucide/download.svg"); }
.icon-external-link { --icon-src: url("https://api.iconify.design/lucide/external-link.svg"); }
.icon-arrow-right   { --icon-src: url("https://api.iconify.design/lucide/arrow-right.svg"); }
.icon-settings      { --icon-src: url("https://api.iconify.design/lucide/settings.svg"); }
.icon-rocket        { --icon-src: url("https://api.iconify.design/lucide/rocket.svg"); }

/* ============================================================
   2. Base Styles
   ============================================================ */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--gradient-surface);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--duration-fast) var(--easing-default); }
a:hover { color: var(--color-primary-hover); text-decoration: underline; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--color-bg-tertiary) 0%, var(--color-border-strong) 100%); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-border-strong); }

/* Text Selection */
::selection { background-color: var(--color-primary-light); color: var(--color-primary-active); }

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-2xl);
}

.container-fluid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-3xl);
}

/* Section spacing — generous whitespace */
section {
  padding: var(--spacing-4xl) 0;
}

/* ============================================================
   3. Navigation — Apple Minimalist Style
   ============================================================ */

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-3xl);
  height: 52px;
  background: var(--color-bg-primary);
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

nav a {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: opacity var(--duration-fast) var(--easing-default);
}

nav a:hover {
  opacity: 0.7;
  text-decoration: none;
}

/* Brand area — larger logo, clear branding */
.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.brand strong {
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.02em;
}

.logo {
  width: 32px;
  height: 32px;
}

/* Navigation items — minimalist, no background */
nav > ul:last-child > li > a:not(.brand) {
  color: var(--color-text-secondary);
}

/* Theme toggle — minimal icon interaction */
#theme-toggle {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs);
  color: var(--color-text-secondary);
}

#theme-toggle:hover {
  opacity: 0.7;
}

#theme-toggle .icon {
  width: 20px;
  height: 20px;
}

[data-theme="light"] .theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }

/* ============================================================
   4. Hero — Apple Minimalist Style
   ============================================================ */

.hero {
  text-align: center;
  padding: 120px var(--spacing-2xl) 80px;
  background: var(--color-bg-primary);
  margin-bottom: 0;
}

.hero h1 {
  font-size: 52px;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  color: var(--color-text-primary);
}

.hero h1 .icon {
  width: 36px;
  height: 36px;
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 21px;
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.4;
}

.hero-actions {
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-2xl);
  color: var(--color-text-secondary);
  font-size: var(--font-size-body);
}

.hero-stats strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.hero-stats span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* ============================================================
   5. Section Headers — Apple Minimalist Style
   ============================================================ */

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  margin: 0;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-header h2 .icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.section-header a {
  font-size: var(--font-size-md);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.section-header a:hover {
  opacity: 0.7;
}

/* ============================================================
   6. Card Grid — Original Design (Friendly-organic)
   ============================================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.skill-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xs), inset 0 1px 0 var(--color-metal-highlight);
  transition: all var(--duration-normal) var(--easing-out-expo);
  display: flex;
  flex-direction: column;
}

.skill-card:hover {
  box-shadow: var(--shadow-md), inset 0 1px 0 var(--color-metal-highlight);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.skill-card header { margin-bottom: var(--spacing-md); }

.card-header-row {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.skill-card h3 {
  font-size: var(--font-size-lg);
  margin: 0;
  line-height: var(--line-height-tight);
}

.skill-card h3 a { color: var(--color-text-primary); }
.skill-card h3 a:hover { color: var(--color-primary); text-decoration: none; }

.card-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  margin: 0;
  flex: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.card-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); }
.card-meta { display: flex; gap: var(--spacing-md); font-size: var(--font-size-sm); color: var(--color-text-secondary); white-space: nowrap; align-items: center; }
.card-meta span { display: flex; align-items: center; gap: var(--spacing-xs); }

.card-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  margin: 0;
  flex: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.card-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); }
.card-meta { display: flex; gap: var(--spacing-md); font-size: var(--font-size-sm); color: var(--color-text-secondary); white-space: nowrap; align-items: center; }
.card-meta span { display: flex; align-items: center; gap: var(--spacing-xs); }

/* ============================================================
   7. Badges
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
}

.badge-style_dna { background: var(--color-info-bg); color: var(--color-info); }
.badge-css_snippet { background: var(--color-success-bg); color: var(--color-success); }
.badge-mixed { background: oklch(90% 0.05 300); color: oklch(35% 0.1 300); }
.badge-official { background: var(--color-primary-light); color: var(--color-primary); }

/* ============================================================
   8. Tags
   ============================================================ */

.tag-pill {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--easing-default);
}

.tag-pill:hover { background: var(--color-border); text-decoration: none; color: var(--color-text-primary); }
.tag-active { background: var(--color-primary); color: white; box-shadow: 0 1px 3px oklch(63% 0.12 42 / 0.25); }
.tag-active:hover { background: var(--color-primary-hover); color: white; }
.tag-count { opacity: 0.6; font-size: var(--font-size-xs); }

.tag-list { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }
.tag-list-large { gap: 0.6rem; }
.tag-list-large .tag-pill { font-size: var(--font-size-body); padding: 0.25rem 0.8rem; }

/* ============================================================
   9. Search — Apple Minimalist Style
   ============================================================ */

.search-container { position: relative; }

.search-form {
  display: flex;
  gap: var(--spacing-md);
  position: relative;
}

.search-form input[type="search"] {
  flex: 1;
  border-radius: 12px;
  padding: 12px 16px 12px 48px;
  border: none;
  background: var(--color-bg-tertiary);
  font-size: var(--font-size-body);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--easing-default);
}

.search-form input[type="search"]:focus {
  outline: none;
  background: var(--color-bg-secondary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.search-form input[type="search"]::placeholder {
  color: var(--color-text-tertiary);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  z-index: 1;
}

.search-form button {
  border-radius: 12px;
  padding: 12px 24px;
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: opacity var(--duration-fast) var(--easing-default);
}

.search-form button:hover {
  opacity: 0.9;
}

.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  max-height: 400px;
  overflow-y: auto;
  margin-top: var(--spacing-xs);
}

.search-dropdown-item {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  transition: background var(--duration-fast) var(--easing-default);
}

.search-dropdown-item:hover { background: var(--color-bg-hover); text-decoration: none; }
.search-dropdown-item:last-child { border-bottom: none; }
.search-dropdown-title { font-weight: var(--font-weight-semibold); font-size: var(--font-size-md); }
.search-dropdown-desc { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-top: 0.15rem; }

/* ============================================================
   10. Browse Layout
   ============================================================ */

.browse-header { margin-bottom: var(--spacing-xl); }
.browse-header h1 { margin-bottom: var(--spacing-md); display: flex; align-items: center; gap: var(--spacing-sm); }
.browse-subtitle { color: var(--color-text-secondary); margin-bottom: var(--spacing-lg); }

.browse-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--spacing-2xl);
}

.browse-sidebar {
  position: sticky;
  top: 5rem;
  align-self: start;
}

.filter-section { margin-bottom: var(--spacing-xl); }
.filter-section h3 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.filter-section h3 .icon { width: 14px; height: 14px; }

.filter-options { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); }

.filter-btn {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  background: var(--color-bg-tertiary);
  border: 1px solid transparent;
  transition: all var(--duration-fast) var(--easing-default);
}

.filter-btn:hover { background: var(--color-border); text-decoration: none; color: var(--color-text-primary); }
.filter-active { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.filter-active:hover { background: var(--color-primary-hover); color: white; }

.browse-results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
}

/* ============================================================
   11. Detail Page
   ============================================================ */

.detail-page { max-width: 860px; margin: 0 auto; }

.detail-header { margin-bottom: var(--spacing-2xl); }
.detail-badges { display: flex; gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }

.detail-header h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  margin: 0 0 var(--spacing-sm);
}

.detail-desc {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.detail-meta span { display: flex; align-items: center; gap: var(--spacing-xs); }

.detail-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); }

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: var(--gradient-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: inset 0 1px 0 var(--color-metal-highlight);
}

.btn-install, .btn-copy, .btn-download, .btn-example {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  border: none;
  font-family: var(--font-family);
  transition: all var(--duration-fast) var(--easing-default);
}

.btn-install { background: var(--color-primary); color: white; box-shadow: var(--shadow-sm); }
.btn-install:hover { background: var(--color-primary-hover); color: white; text-decoration: none; box-shadow: var(--shadow-md); }
.btn-copy { background: var(--color-bg-secondary); color: var(--color-text-primary); box-shadow: var(--shadow-xs), inset 0 1px 0 var(--color-metal-highlight); }
.btn-copy:hover { background: var(--color-bg-hover); text-decoration: none; }
.btn-download { background: var(--color-bg-secondary); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.btn-download:hover { background: var(--color-bg-hover); text-decoration: none; }
.btn-example { background: var(--color-bg-secondary); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.btn-example:hover { background: var(--color-bg-hover); text-decoration: none; }

.toast {
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-md);
}

.detail-content { margin-bottom: var(--spacing-3xl); }

.content-section { margin-bottom: var(--spacing-2xl); }

.content-section-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.content-section-title .icon { width: 18px; height: 18px; color: var(--color-primary); }

/* ============================================================
   12. Upload Page
   ============================================================ */

.upload-page { max-width: 700px; margin: 0 auto; }
.upload-page h1 {
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}
.upload-page > p { color: var(--color-text-secondary); margin-bottom: var(--spacing-2xl); }

.upload-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0;
}

.tab-btn {
  padding: 0.6rem 1.5rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: -2px;
  transition: all var(--duration-fast) var(--easing-default);
}

.tab-btn:hover { color: var(--color-text-primary); }
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }

.upload-form { display: flex; flex-direction: column; gap: var(--spacing-xl); }

.form-group { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.form-group label { font-weight: var(--font-weight-semibold); font-size: var(--font-size-md); }

.form-group input, .form-group textarea {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  box-shadow: inset 0 1px 2px var(--color-metal-shadow);
  font-size: var(--font-size-body);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--easing-default);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: inset 0 1px 2px var(--color-metal-shadow), 0 0 0 3px var(--color-primary-light);
}

.form-group input::placeholder, .form-group textarea::placeholder { color: var(--color-text-tertiary); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }

.code-textarea {
  font-family: var(--font-family-mono) !important;
  font-size: var(--font-size-sm) !important;
  line-height: 1.5;
  tab-size: 2;
}

.preview-box {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-lg);
  min-height: 100px;
  max-height: 300px;
  overflow-y: auto;
  font-size: var(--font-size-md);
}

.preview-empty { color: var(--color-text-secondary); font-style: italic; }
.preview-title { font-weight: var(--font-weight-semibold); margin-bottom: var(--spacing-xs); }
.preview-desc { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin-bottom: var(--spacing-sm); }

.error { color: var(--color-error); font-size: var(--font-size-sm); }

.btn-submit {
  padding: 0.7rem 2rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  align-self: flex-start;
  font-family: var(--font-family);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--duration-fast) var(--easing-default);
}

.btn-submit:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-md); }

/* ============================================================
   13. Related Section
   ============================================================ */

.related-section { margin-top: var(--spacing-3xl); padding-top: var(--spacing-2xl); border-top: 1px solid var(--color-border-light); }
.related-section h2 { margin-bottom: var(--spacing-lg); }

/* ============================================================
   14. Error Page
   ============================================================ */

.error-page { text-align: center; padding: var(--spacing-4xl) var(--spacing-lg); animation: fadeIn var(--duration-normal) var(--easing-default); }
.error-page h1 { font-size: 4rem; margin-bottom: var(--spacing-sm); color: var(--color-text-secondary); }
.error-page .icon { margin-bottom: var(--spacing-lg); }
.error-page-subtitle { color: var(--color-text-secondary); margin-bottom: var(--spacing-xl); }

/* ============================================================
   15. Pagination
   ============================================================ */

.pagination { margin: var(--spacing-2xl) 0; }
.pagination ul { display: flex; justify-content: center; gap: var(--spacing-sm); list-style: none; padding: 0; }
.pagination a, .pagination span { display: inline-flex; align-items: center; gap: var(--spacing-xs); padding: 0.4rem 0.8rem; border-radius: var(--radius-sm); font-size: var(--font-size-md); }
.pagination a { background: var(--color-bg-secondary); color: var(--color-text-primary); border: 1px solid var(--color-border-light); transition: all var(--duration-fast) var(--easing-default); }
.pagination a:hover { background: var(--color-bg-hover); text-decoration: none; }
.pagination .active { background: var(--color-primary); color: white; border-color: var(--color-primary); }

/* ============================================================
   16. Empty State
   ============================================================ */

.empty-state { text-align: center; padding: var(--spacing-3xl) var(--spacing-lg); color: var(--color-text-secondary); }
.empty-state .icon { margin-bottom: var(--spacing-lg); }
.empty-state p { margin-bottom: var(--spacing-lg); }

/* ============================================================
   17. Markdown Body
   ============================================================ */

.markdown-body { line-height: var(--line-height-relaxed); }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { margin-top: 1.5rem; margin-bottom: var(--spacing-sm); }
.markdown-body h2 { border-bottom: 1px solid var(--color-border); padding-bottom: var(--spacing-xs); }
.markdown-body pre { background: #282c34; border-radius: var(--radius-sm); padding: var(--spacing-lg); overflow-x: auto; }
.markdown-body code { font-family: var(--font-family-mono); font-size: 0.9em; }
.markdown-body p code { background: var(--color-bg-tertiary); padding: 0.1rem 0.4rem; border-radius: var(--radius-xs); font-size: 0.85em; }
.markdown-body ul, .markdown-body ol { padding-left: 1.5rem; }
.markdown-body table { width: 100%; border-collapse: collapse; margin: var(--spacing-lg) 0; }
.markdown-body th, .markdown-body td { padding: var(--spacing-sm) var(--spacing-md); border: 1px solid var(--color-border); text-align: left; }
.markdown-body th { background: var(--color-bg-secondary); font-weight: var(--font-weight-semibold); }

pre code.language-css { display: block; background: #282c34; border-radius: var(--radius-sm); padding: var(--spacing-lg); overflow-x: auto; }

/* ============================================================
   18. Footer — Apple Minimalist Style
   ============================================================ */

footer {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-2xl);
  margin-top: auto;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

.footer-content p {
  margin: var(--spacing-sm) 0;
}

.footer-content > p:first-child {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.footer-copy {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.footer-separator {
  display: none;
}

/* ============================================================
   19. Animations
   ============================================================ */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ============================================================
   20. Responsive
   ============================================================ */

@media (max-width: 768px) {
  /* Hero mobile */
  .hero {
    padding: 80px var(--spacing-xl) 60px;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero p {
    font-size: 17px;
    padding: 0 var(--spacing-md);
  }

  /* Card grid mobile */
  .card-grid { grid-template-columns: 1fr; }

  /* Browse layout mobile */
  .browse-layout { grid-template-columns: 1fr; }
  .browse-sidebar { position: static; }

  /* Form mobile */
  .form-row { grid-template-columns: 1fr; }
  .detail-actions { flex-direction: column; }
  .detail-actions > * { text-align: center; justify-content: center; }

  /* Stats mobile */
  .hero-stats { gap: var(--spacing-lg); }

  /* Nav mobile */
  nav {
    padding: 0 var(--spacing-xl);
    height: 48px;
  }
  nav ul { gap: var(--spacing-lg); }
  .brand {
    font-size: var(--font-size-lg);
  }
  .logo {
    width: 28px;
    height: 28px;
  }

  /* Footer mobile */
  footer {
    padding: var(--spacing-2xl) var(--spacing-xl);
  }

  /* Container mobile */
  .container {
    padding: 0 var(--spacing-xl);
  }
  section {
    padding: var(--spacing-2xl) 0;
  }

  /* Get Started mobile */
  .steps-grid { grid-template-columns: 1fr; }
  .install-btn-nav { display: none; }
}

/* ============================================================
   21. Install Button - Navigation CTA
   ============================================================ */

.install-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.35rem 0.85rem;
  background: var(--color-primary);
  color: white !important;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-xs);
  transition: all var(--duration-fast) var(--easing-default);
}

.install-btn:hover {
  background: var(--color-primary-hover);
  color: white !important;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  text-decoration: none;
}

/* ============================================================
   22. Get Started Section - Installation Guidance
   ============================================================ */

.get-started {
  padding: var(--spacing-3xl) 0;
  animation: fadeIn var(--duration-normal) var(--easing-default);
}

.get-started .section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.get-started .section-header h2 {
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  max-width: 900px;
  margin: 0 auto;
}

.step-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xs), inset 0 1px 0 var(--color-metal-highlight);
  transition: all var(--duration-normal) var(--easing-out-expo);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: slideUp var(--duration-slow) var(--easing-out-expo);
}

.step-card:hover {
  box-shadow: var(--shadow-md), inset 0 1px 0 var(--color-metal-highlight);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-lg);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
}

.step-card h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.step-card p {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
}

.step-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.4rem 1rem;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--duration-fast) var(--easing-default);
  box-shadow: var(--shadow-xs);
}

.step-link:hover {
  background: var(--color-primary-hover);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.step-link.secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.step-link.secondary:hover {
  background: var(--color-bg-hover);
  color: var(--color-primary-hover);
  border-color: var(--color-primary-light);
}