/* ==========================================================================
   MacAltTab Landing Page Design System & Stylesheet
   Theme: macOS Sequoia Dark Glass / Neon Cyber-Chic
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #0A0D14;
  --bg-secondary: #121824;
  --bg-card: rgba(20, 27, 41, 0.65);
  --bg-card-hover: rgba(30, 41, 62, 0.75);

  --accent-blue: #007AFF;
  --accent-blue-glow: rgba(0, 122, 255, 0.35);
  --accent-purple: #5E5CE6;
  --accent-purple-glow: rgba(94, 92, 230, 0.35);
  --accent-cyan: #64D2FF;
  --accent-red: #FF3B30;
  --accent-green: #34C759;
  --accent-yellow: #FFCC00;

  --text-main: #F2F5FB;
  --text-muted: #8E9BAE;
  --text-dim: #5C6778;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.15);
  --border-active: rgba(100, 210, 255, 0.6);

  /* Glass Blur */
  --glass-blur: blur(24px) saturate(180%);
  --glass-bg-hud: rgba(18, 22, 33, 0.85);
  --glass-bg-frosted: rgba(255, 255, 255, 0.12);
  --glass-bg-vibrant: rgba(10, 14, 26, 0.7);
  --glass-bg-sidebar: rgba(15, 18, 28, 0.92);

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Global */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Radial Glow Blobs */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-blue) 0%, rgba(0, 0, 0, 0) 70%);
  top: -100px;
  left: 20%;
}

.glow-2 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-purple) 0%, rgba(0, 0, 0, 0) 70%);
  top: 600px;
  right: -100px;
}

.glow-3 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #FF2D55 0%, rgba(0, 0, 0, 0) 70%);
  bottom: 400px;
  left: -100px;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, #FFFFFF 0%, #64D2FF 50%, #9F85FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Badges & Buttons */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge-native {
  background: rgba(0, 122, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(100, 210, 255, 0.3);
}

.badge-success {
  background: rgba(52, 199, 89, 0.15);
  color: #58D68D;
  border: 1px solid rgba(52, 199, 89, 0.3);
}

.badge-danger {
  background: rgba(255, 59, 48, 0.15);
  color: #FF6B60;
  border: 1px solid rgba(255, 59, 48, 0.3);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(10, 13, 20, 0.75);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  box-shadow: 0 0 12px rgba(0, 122, 255, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text-main);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-family: var(--font-body);
}

.btn-nav-cta {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: #FFF;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

.btn-nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 122, 255, 0.5);
}

/* Hero Section */
.hero-section {
  padding-top: 130px;
  padding-bottom: 80px;
  text-align: center;
}

.hero-app-icon-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.hero-title-app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 16px 40px rgba(0, 122, 255, 0.45);
  border: 1px solid var(--border-glass);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hero-title-app-icon:hover {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 20px 50px rgba(0, 122, 255, 0.65);
}

.hero-badge-container {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px auto;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.btn-primary {
  background: linear-gradient(135deg, #007AFF 0%, #5E5CE6 100%);
  color: #FFF;
  box-shadow: 0 8px 30px rgba(0, 122, 255, 0.4);

  flex-direction: column;
  align-items: center;
  padding: 14px 28px;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(0, 122, 255, 0.6);
}

.btn-subtext {
  font-size: 0.72rem;
  font-weight: 400;
  opacity: 0.85;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 60px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 30px;
  background: var(--border-subtle);
}

/* Hero Image Glass Frame */
.hero-image-wrapper {
  max-width: 960px;
  margin: 0 auto;
}

.glass-frame {
  position: relative;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 12px;
  backdrop-filter: var(--glass-blur);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}

/* Section Shared Headers */
.section-header {
  text-align: center;
  max-width: 100%;
  margin: 0 auto 50px auto;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Interactive Demo Sandbox */
.demo-section {
  padding: 80px 0;
  background: rgba(18, 24, 36, 0.3);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* Permissions Status Bar */
.permissions-status-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  padding: 14px 24px;
  border-radius: 16px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.perm-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-main);
}

.perm-items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}

.perm-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
}

.perm-label {
  color: var(--text-muted);
  font-weight: 500;
}

.perm-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.perm-badge .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.perm-badge.badge-green {
  background: rgba(52, 199, 89, 0.18);
  color: #34C759;
  border: 1px solid rgba(52, 199, 89, 0.4);
}

.perm-badge.badge-green .status-dot {
  background: #34C759;
  box-shadow: 0 0 8px #34C759;
}

.perm-badge.badge-red {
  background: rgba(255, 59, 48, 0.18);
  color: #FF3B30;
  border: 1px solid rgba(255, 59, 48, 0.4);
}

.perm-badge.badge-red .status-dot {
  background: #FF3B30;
  box-shadow: 0 0 8px #FF3B30;
}

.demo-controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  padding: 16px 24px;
  border-radius: 16px;
  backdrop-filter: var(--glass-blur);
  margin-bottom: 24px;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.control-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.button-pill-group {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  padding: 4px;
  border-radius: 10px;
  gap: 4px;
}

.pill-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pill-btn:hover {
  color: var(--text-main);
}

.pill-btn.active {
  background: var(--accent-blue);
  color: #FFF;
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.4);
}

/* Desktop Simulator Window */
.desktop-simulator-window {
  background: #000;
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.simulator-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: rgba(24, 28, 40, 0.95);
  border-bottom: 1px solid var(--border-subtle);
}

.mac-traffic-lights {
  display: flex;
  gap: 8px;
}

.mac-traffic-lights .light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.mac-traffic-lights .red {
  background: #FF5F56;
}

.mac-traffic-lights .yellow {
  background: #FFBD2E;
}

.mac-traffic-lights .green {
  background: #27C93F;
}

.sim-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.sim-hint kbd {
  background: rgba(255, 255, 255, 0.15);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.simulator-screen {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.desktop-wallpaper {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 30%, #1a1b35 0%, #0d0f19 80%);
  z-index: 0;
}

/* Alt-Tab Glass HUD Overlay */
.alt-tab-hud {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 100%;
  border-radius: 20px;
  padding: 24px 28px;
  transition: all var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.7);
}

/* Glass Material Variations */
.alt-tab-hud.material-hudDark {
  background: var(--glass-bg-hud);
  backdrop-filter: blur(28px) saturate(190%);
}

.alt-tab-hud.material-frosted {
  background: var(--glass-bg-frosted);
  backdrop-filter: blur(40px) brightness(1.2);
}

.alt-tab-hud.material-vibrant {
  background: var(--glass-bg-vibrant);
  backdrop-filter: blur(20px) saturate(220%);
}

.alt-tab-hud.material-sidebar {
  background: var(--glass-bg-sidebar);
  backdrop-filter: blur(15px);
}

/* HUD Header Marquee */
.hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hud-title-marquee {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  overflow: hidden;
  max-width: 600px;
  white-space: nowrap;
}

.marquee-text {
  display: inline-block;
  animation: marquee 8s linear infinite alternate;
}

@keyframes marquee {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-30px);
  }
}

.hud-meta-badge {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 10px;
  border-radius: 12px;
  color: var(--text-muted);
}

/* HUD Cards Grid */
.hud-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

/* Window Card Base */
.window-card {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 10px;
  user-select: none;
}

.window-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.window-card.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 122, 255, 0.2);
  box-shadow: 0 0 20px var(--accent-blue-glow), inset 0 0 10px rgba(100, 210, 255, 0.2);
}

/* Card Traffic Lights Hover */
.card-traffic-lights {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 5;
}

.window-card:hover .card-traffic-lights {
  opacity: 1;
}

.card-btn {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  color: #FFF;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  cursor: pointer;
}

.btn-close {
  background: #FF5F56;
}

.btn-minimize {
  background: #FFBD2E;
}

/* Card Components */
.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-app-icon {
  width: 24px;
  height: 24px;
  border-radius: 5px;
}

.card-app-name {
  display: none;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.2;
}

.card-window-title {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100px;
}

.card-thumbnail {
  height: 90px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  padding: 8px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  overflow: hidden;
}

/* Layout Variations */
.layout-header-bottom .window-card {
  flex-direction: column-reverse;
}

.layout-icon-only .card-thumbnail,
.layout-icon-only .card-window-title {
  display: none;
}

.layout-icon-only .window-card {
  align-items: center;
  justify-content: center;
  padding: 24px 12px;
}

.layout-icon-only .card-app-icon {
  width: 48px;
  height: 48px;
}

.layout-thumbnail-only .card-header {
  display: none;
}

.layout-thumbnail-only .card-thumbnail {
  height: 130px;
}

/* Simulator Footer Buttons */
.simulator-action-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  background: rgba(15, 18, 26, 0.95);
  border-top: 1px solid var(--border-subtle);
}

.sim-action-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sim-action-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.sim-action-btn.active-trigger {
  background: var(--accent-blue);
  color: #FFF;
  border-color: transparent;
}

.sim-action-btn.danger-action:hover {
  background: var(--accent-red);
}

.sim-action-btn.warning-action:hover {
  background: var(--accent-yellow);
  color: #000;
}

/* Mobile Demo Notice */
.mobile-demo-notice {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 40px 24px;
  text-align: center;
  backdrop-filter: var(--glass-blur);
  margin-top: 10px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.mobile-notice-icon {
  font-size: 3rem;
  margin-bottom: 14px;
}

.mobile-notice-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.mobile-notice-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 480px;
  margin: 0 auto;
}

/* Features Grid */
.features-section {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 32px;
  backdrop-filter: var(--glass-blur);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.cyan-glow {
  background: rgba(100, 210, 255, 0.15);
  color: var(--accent-cyan);
}

.purple-glow {
  background: rgba(94, 92, 230, 0.15);
  color: var(--accent-purple);
}

.blue-glow {
  background: rgba(0, 122, 255, 0.15);
  color: var(--accent-blue);
}

.red-glow {
  background: rgba(255, 59, 48, 0.15);
  color: var(--accent-red);
}

.green-glow {
  background: rgba(52, 199, 89, 0.15);
  color: var(--accent-green);
}

.yellow-glow {
  background: rgba(255, 204, 0, 0.15);
  color: var(--accent-yellow);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Visual Showcase Split */
.visual-showcase-section {
  padding: 80px 0;
}

.visual-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.showcase-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.showcase-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.showcase-checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--text-main);
}

.showcase-img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* Performance Table */
.performance-section {
  padding: 100px 0;
  background: rgba(18, 24, 36, 0.2);
}

.benchmark-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 24px;
  backdrop-filter: var(--glass-blur);
}

.table-responsive {
  overflow-x: auto;
}

.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.benchmark-table th,
.benchmark-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.benchmark-table th {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--text-muted);
}

.benchmark-table .highlight-col {
  background: rgba(0, 122, 255, 0.08);
}

/* Shortcuts Section */
.shortcuts-section {
  padding: 80px 0;
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.shortcut-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.shortcut-keys kbd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-glass);
  padding: 4px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

.shortcut-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Download Section */
.download-section {
  padding: 100px 0;
}

.download-box {
  position: relative;
  background: linear-gradient(135deg, rgba(20, 27, 45, 0.9), rgba(30, 20, 50, 0.9));
  border: 1px solid var(--border-glass);
  border-radius: 28px;
  padding: 60px 40px;
  text-align: center;
  backdrop-filter: var(--glass-blur);
  overflow: hidden;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
}

.download-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  margin-bottom: 20px;
  box-shadow: 0 10px 30px rgba(0, 122, 255, 0.5);
}

.download-title {
  font-size: 2.8rem;
  margin-bottom: 12px;
}

.download-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 36px;
}

.btn-xl {
  padding: 18px 36px;
  font-size: 1.1rem;
}

.cli-build-box {
  max-width: 680px;
  margin: 40px auto 0 auto;
  background: #000;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  text-align: left;
}

.cli-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.copy-cli-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
}

.cli-code {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #64D2FF;
  line-height: 1.5;
}

.c-comment {
  color: var(--text-dim);
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text-main);
}

.brand-icon-sm {
  width: 24px;
  height: 24px;
  border-radius: 6px;
}

.footer-right a {
  color: var(--accent-cyan);
  text-decoration: none;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--accent-blue);
  color: #FFF;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 122, 255, 0.5);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  pointer-events: none;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Privacy Guarantee Section */
.privacy-section {
  padding: 80px 0;
  text-align: center;
}

.privacy-card {
  background: var(--bg-card-glass);
  border: 1px solid rgba(52, 199, 89, 0.3);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(52, 199, 89, 0.08);
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(52, 199, 89, 0.12);
  border: 1px solid rgba(52, 199, 89, 0.3);
  color: #34C759;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.privacy-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-main);
}

.privacy-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 40px auto;
  line-height: 1.6;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.privacy-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: transform var(--transition-normal);
}

.privacy-item:hover {
  transform: translateY(-4px);
  border-color: rgba(52, 199, 89, 0.5);
}

.privacy-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.privacy-item h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.privacy-item p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Optimization
   ========================================================================== */

/* Tablets & Medium Displays (<= 900px) */
@media (max-width: 900px) {
  .hero-section {
    padding-top: 110px;
    padding-bottom: 60px;
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .visual-showcase-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nav-links {
    display: none;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 24px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
    padding: 16px 20px;
  }

  .stat-divider {
    display: none;
  }
}

/* Mobile Devices & Small Screens (<= 640px) */
@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .navbar {
    padding: 12px 0;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .badge-native {
    display: none;
  }

  .hero-section {
    padding-top: 96px;
    padding-bottom: 48px;
  }

  .hero-app-icon-wrapper {
    margin-bottom: 16px;
  }

  .hero-title-app-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
  }

  .hero-badge-container {
    font-size: 0.78rem;
    padding: 4px 12px;
    margin-bottom: 16px;
  }

  .hero-title {
    font-size: 2.1rem;
    line-height: 1.2;
    margin-bottom: 16px;
  }

  .hero-subtitle {
    font-size: 1.0rem;
    margin-bottom: 24px;
  }

  .hero-cta-group {
    width: 100%;
  }

  .hero-cta-group .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 14px;
  }

  .stat-value {
    font-size: 1.1rem;
  }

  .stat-label {
    font-size: 0.72rem;
  }

  /* Interactive Demo Sandbox Mobile Adjustments */
  .demo-section {
    padding: 60px 0;
  }

  .demo-card-container {
    display: none !important;
  }

  .mobile-demo-notice {
    display: block;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

  .permissions-status-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
  }

  .perm-items {
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }

  .perm-item {
    width: 100%;
    justify-content: space-between;
  }

  .demo-controls-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px;
  }

  .control-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .button-pill-group {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .pill-btn {
    flex: 1;
    text-align: center;
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  .simulator-top-bar {
    padding: 10px 14px;
  }

  .sim-hint {
    display: none;
  }

  .simulator-screen {
    min-height: 360px;
    padding: 16px 8px;
  }

  .alt-tab-hud {
    padding: 12px;
    border-radius: 14px;
  }

  .hud-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 12px;
  }

  .hud-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .card-thumbnail {
    height: 70px;
  }

  .simulator-action-footer {
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
  }

  .sim-action-btn {
    width: 100%;
    text-align: center;
  }

  /* Privacy Section Mobile Adjustments */
  .privacy-section {
    padding: 50px 0;
  }

  .privacy-card {
    padding: 28px 16px;
    border-radius: 16px;
  }

  .privacy-title {
    font-size: 1.75rem;
  }

  .privacy-desc {
    font-size: 0.98rem;
    margin-bottom: 24px;
  }

  .privacy-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .privacy-item {
    padding: 20px 14px;
  }

  /* Performance Table Mobile */
  .performance-section {
    padding: 60px 0;
  }

  .benchmark-card {
    padding: 14px;
  }

  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .benchmark-table th,
  .benchmark-table td {
    padding: 12px 14px;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  /* Shortcuts Mobile */
  .shortcuts-section {
    padding: 60px 0;
  }

  .shortcuts-grid {
    grid-template-columns: 1fr;
  }

  /* Download Section Mobile */
  .download-section {
    padding: 60px 0;
  }

  .download-box {
    padding: 36px 16px;
    border-radius: 20px;
  }

  .download-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
  }

  .download-title {
    font-size: 1.75rem;
  }

  .download-desc {
    font-size: 0.92rem;
  }

  .download-actions {
    width: 100%;
  }

  .btn-xl {
    width: 100%;
    justify-content: center;
    padding: 14px 16px;
    font-size: 1.05rem;
  }

  .btn-subtext {
    font-size: 0.72rem;
  }

  /* Footer Mobile */
  .footer-container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}