/* ==========================================================================
   Collabsource Tools - Design System & Master Stylesheet
   Domain: collabsource.org | 100% Free, Client-Side, Private Online Tools
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette - Light Theme */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-border: rgba(226, 232, 240, 0.8);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Brand Accents */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-glow: rgba(79, 70, 229, 0.25);
  
  --secondary: #06b6d4;
  --secondary-hover: #0891b2;
  --secondary-light: #ecfeff;

  --accent: #8b5cf6;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  --hero-gradient: radial-gradient(circle at 50% 20%, rgba(79, 70, 229, 0.08) 0%, rgba(6, 182, 212, 0.04) 50%, transparent 80%);
  
  /* Status Colors */
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #3b82f6;
  --info-bg: #eff6ff;

  /* Borders & Shadows */
  --border-color: #e2e8f0;
  --border-color-subtle: #f1f5f9;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.12), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 30px -10px rgba(15, 23, 42, 0.15), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.2);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
  --font-heading: 'Space Grotesk', var(--font-sans);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max: 1280px;
  --header-height: 72px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-elevated: #1e293b;
  --bg-glass: rgba(17, 24, 39, 0.85);
  --bg-glass-border: rgba(51, 65, 85, 0.6);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-light: rgba(99, 102, 241, 0.15);
  --primary-glow: rgba(99, 102, 241, 0.35);

  --secondary: #22d3ee;
  --secondary-hover: #38bdf8;
  --secondary-light: rgba(34, 211, 238, 0.15);

  --accent: #a78bfa;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
  --hero-gradient: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.15) 0%, rgba(34, 211, 238, 0.08) 50%, transparent 80%);

  --border-color: #1e293b;
  --border-color-subtle: #334155;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
}

/* --------------------------------------------------------------------------
   2. Reset & Base Elements
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image: var(--hero-gradient);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

img, svg, picture, video {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

ul, ol {
  list-style-position: inside;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); }
h2 { font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem); }
h3 { font-size: clamp(1.2rem, 1.5vw + 0.5rem, 1.5rem); }
h4 { font-size: 1.2rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

/* Accessibility: Focus & Reduced Motion */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--primary);
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   3. Layout & Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  max-width: 900px;
}

.main-content {
  flex: 1 0 auto;
  padding-top: var(--header-height);
}

.section {
  padding: 60px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 90px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   4. Header & Navigation (Mega Menu + Mobile Drawer)
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bg-glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: all var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-icon-wrapper {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

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

.brand-text span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Nav Links */
.nav-menu {
  display: none;
  align-items: center;
  gap: 8px;
  list-style: none;
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-link svg.chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link svg.chevron {
  transform: rotate(180deg);
}

/* Mega Dropdown */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: -200px;
  width: 820px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
  display: none;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 1010;
}

.nav-item:hover .mega-dropdown {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-col-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mega-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mega-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mega-item a:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateX(3px);
}

.mega-item svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle-btn, .mobile-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover, .mobile-toggle-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

.mobile-toggle-btn {
  display: flex;
}

@media (min-width: 1024px) {
  .mobile-toggle-btn {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height));
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 24px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mobile-nav-drawer.active {
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
}

.mobile-nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.mobile-category-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 16px 0 8px;
}

.mobile-tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mobile-tool-card {
  padding: 10px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --------------------------------------------------------------------------
   5. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  color: #ffffff;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #ffffff;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }

/* --------------------------------------------------------------------------
   6. Hero Section with 3D Canvas
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 0 60px;
  overflow: hidden;
}

#hero-3d-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  pointer-events: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: clamp(2.25rem, 5vw + 1rem, 4rem);
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-title .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Quick Search Bar */
.hero-search-wrapper {
  max-width: 580px;
  margin: 0 auto 36px;
  position: relative;
}

.hero-search-input {
  width: 100%;
  height: 56px;
  padding: 0 24px 0 54px;
  font-size: 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
}

.hero-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-lg);
}

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

/* Hero Feature Pills */
.hero-features {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.feature-pill svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   7. Category Filter Tabs & Tool Cards Grid
   -------------------------------------------------------------------------- */
.category-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.category-tab-btn {
  padding: 10px 20px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.category-tab-btn:hover, .category-tab-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.tool-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.tool-card:hover .tool-card-icon {
  transform: scale(1.08);
  background: var(--primary);
  color: #ffffff;
}

.tool-card-icon svg {
  width: 24px;
  height: 24px;
}

.tool-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--border-color-subtle);
}

.tool-card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}

.tool-card-action {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tool-card:hover .tool-card-action {
  gap: 8px;
}

/* --------------------------------------------------------------------------
   8. Feature Highlights ("Why Collabsource")
   -------------------------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.feature-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-box-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.feature-box-icon svg {
  width: 28px;
  height: 28px;
}

.feature-box-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.feature-box-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   9. AdSense Container Slots (CLS Safe with min-height)
   -------------------------------------------------------------------------- */
.ad-slot-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 32px 0;
  padding: 12px;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  overflow: hidden;
}

.ad-slot-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.ad-slot {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

.ad-slot[data-slot="header"] {
  min-height: 90px;
}

.ad-slot[data-slot="in-content"] {
  min-height: 250px;
}

.ad-slot[data-slot="sidebar"] {
  min-height: 600px;
}

.ad-slot[data-slot="footer"] {
  min-height: 90px;
}

/* --------------------------------------------------------------------------
   10. Breadcrumbs & Schema UI
   -------------------------------------------------------------------------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs .separator {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.breadcrumbs .current {
  color: var(--text-primary);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   11. FAQ Accordions
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px;
  display: none;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

/* --------------------------------------------------------------------------
   12. Cookie Consent Banner
   -------------------------------------------------------------------------- */
.cookie-consent-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 520px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
  z-index: 9999;
  display: none;
  flex-direction: column;
  gap: 16px;
  animation: slideUpFade 0.4s ease-out;
}

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

.cookie-consent-title {
  font-size: 1.125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cookie-consent-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.cookie-consent-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   13. Footer (SEO-Optimized Multi-Column)
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 36px;
  margin-bottom: 48px;
}

.footer-brand {
  grid-column: 1 / -1;
}

@media (min-width: 1024px) {
  .footer-brand {
    grid-column: span 2;
  }
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  }
}

.footer-title {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  margin-top: 16px;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* --------------------------------------------------------------------------
   14. Toast Notifications
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 600;
  animation: slideInRight 0.3s ease-out;
  min-width: 260px;
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--info); }