/* ==========================================================================
   MacNotch — Design System & Stylesheet (Zero AI Slop / Native Apple Aesthetic)
   ========================================================================== */

/* --- CSS Variables & Color Tokens --- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Plus Jakarta Sans", -apple-system-subheading, "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Spring Physics Timing */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 160ms;
  --duration-normal: 280ms;
  --duration-spring: 420ms;

  /* Base Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* --- Dark Theme (Default: Obsidian Glass) --- */
[data-theme="dark"] {
  --bg-page: #08090d;
  --bg-surface: rgba(18, 21, 29, 0.7);
  --bg-surface-elevated: rgba(26, 31, 44, 0.85);
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-card-active: rgba(255, 255, 255, 0.1);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-highlight: rgba(255, 255, 255, 0.22);

  --text-primary: #f5f5f7;
  --text-secondary: #98989f;
  --text-tertiary: #636366;
  --text-inverse: #08090d;

  --accent-blue: #0A84FF;
  --accent-blue-hover: #409CFF;
  --accent-blue-glow: rgba(10, 132, 255, 0.25);

  --accent-green: #30D158;
  --accent-orange: #FF9F0A;
  --accent-purple: #BF5AF2;

  --macbook-chassis: #1c1d22;
  --macbook-bezel: #0b0c10;
  --macbook-notch: #000000;
  --macbook-screen-bg: radial-gradient(circle at 50% 30%, #171b26 0%, #0d0f15 100%);
  --macbook-base: #14151a;

  --glass-blur: blur(28px) saturate(190%);
  --glass-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.65), 0 0 0 1px var(--border-subtle);
  --glow-primary: radial-gradient(circle, rgba(10, 132, 255, 0.15) 0%, transparent 70%);
  --glow-secondary: radial-gradient(circle, rgba(191, 90, 242, 0.12) 0%, transparent 70%);
}

/* --- Light Theme (Frosted Crystal Acrylic) --- */
[data-theme="light"] {
  --bg-page: #f5f5f7;
  --bg-surface: rgba(255, 255, 255, 0.82);
  --bg-surface-elevated: rgba(255, 255, 255, 0.96);
  --bg-card: rgba(0, 0, 0, 0.03);
  --bg-card-hover: rgba(0, 0, 0, 0.06);
  --bg-card-active: rgba(0, 0, 0, 0.09);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.14);
  --border-highlight: rgba(0, 0, 0, 0.24);

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --text-inverse: #ffffff;

  --accent-blue: #0071e3;
  --accent-blue-hover: #0077ED;
  --accent-blue-glow: rgba(0, 113, 227, 0.2);

  --accent-green: #34C759;
  --accent-orange: #FF9500;
  --accent-purple: #AF52DE;

  --macbook-chassis: #d2d2d7;
  --macbook-bezel: #1d1d1f;
  --macbook-notch: #000000;
  --macbook-screen-bg: radial-gradient(circle at 50% 30%, #e2e8f0 0%, #cbd5e1 100%);
  --macbook-base: #bcbcc0;

  --glass-blur: blur(28px) saturate(180%);
  --glass-shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.12), 0 0 0 1px var(--border-subtle);
  --glow-primary: radial-gradient(circle, rgba(0, 113, 227, 0.1) 0%, transparent 70%);
  --glow-secondary: radial-gradient(circle, rgba(175, 82, 222, 0.08) 0%, transparent 70%);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--duration-normal) var(--ease-smooth), color var(--duration-normal) var(--ease-smooth);
}

/* --- Ambient Glow --- */
.ambient-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
}

.orb-primary {
  top: -10vw;
  left: 50%;
  transform: translateX(-50%);
  width: 60vw;
  height: 40vw;
  background: var(--glow-primary);
}

.orb-secondary {
  top: 30vw;
  right: -10vw;
  width: 45vw;
  height: 45vw;
  background: var(--glow-secondary);
}

.orb-accent {
  bottom: 10vw;
  left: -10vw;
  width: 50vw;
  height: 50vw;
  background: var(--glow-primary);
}

/* --- Header / Navigation Bar --- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-normal) var(--ease-smooth), border-color var(--duration-normal) var(--ease-smooth);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.brand-details {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.version-tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--accent-blue);
  font-family: var(--font-mono);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-item {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.nav-item:hover {
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-smooth), border-color var(--duration-fast) var(--ease-smooth);
}

.theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
}

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

.github-pill-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.github-pill-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
}

.cta-direct-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  background: var(--accent-blue);
  color: #ffffff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background var(--duration-fast) var(--ease-smooth), transform var(--duration-fast) var(--ease-spring);
  box-shadow: 0 2px 10px var(--accent-blue-glow);
}

.cta-direct-btn:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-1px);
}

/* --- Main Layout --- */
main {
  position: relative;
  z-index: 1;
}

.section-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 80px 24px;
}

.text-center {
  text-align: center;
}

.section-header {
  margin-bottom: 48px;
}

.subheading-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

/* --- Hero Section --- */
.hero-section {
  padding: 60px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-blue) 0%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtext {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.5;
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.primary-download-btn {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 8px 24px var(--accent-blue-glow);
  transition: transform var(--duration-fast) var(--ease-spring), background var(--duration-fast) var(--ease-smooth);
}

.primary-download-btn:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-2px);
}

.btn-inner {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.btn-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.btn-subtitle {
  font-size: 0.74rem;
  opacity: 0.85;
  font-family: var(--font-mono);
}

.secondary-demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.secondary-demo-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.specs-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  flex-wrap: wrap;
  justify-content: center;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.spec-label {
  color: var(--text-tertiary);
}

.spec-val {
  font-weight: 700;
  color: var(--text-primary);
}

.spec-separator {
  width: 1px;
  height: 14px;
  background: var(--border-subtle);
}

/* --- Interactive MacBook Replica --- */
.demo-wrapper {
  margin-top: 50px;
  position: relative;
}

.demo-caption-bar {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.demo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background: rgba(10, 132, 255, 0.12);
  border: 1px solid rgba(10, 132, 255, 0.3);
  color: var(--accent-blue);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.demo-instruction {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.demo-instruction strong {
  color: var(--text-primary);
}

.macbook-device {
  max-width: 920px;
  margin: 0 auto;
  position: relative;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.45));
}

.macbook-lid {
  background: var(--macbook-chassis);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px 18px 0 0;
  padding: 12px 12px 0;
  position: relative;
}

.macbook-screen {
  background: var(--macbook-screen-bg);
  border: 1px solid rgba(0, 0, 0, 0.4);
  border-radius: 10px 10px 0 0;
  height: 480px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Menu Bar inside Mockup */
.mac-menubar {
  height: 28px;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  user-select: none;
  z-index: 5;
}

.menubar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.apple-logo {
  font-size: 0.92rem;
  line-height: 1;
}

.app-menu-name {
  font-weight: 700;
}

.menu-item-text {
  font-weight: 500;
  opacity: 0.8;
}

.menubar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
}

/* MacBook Notch Container */
.notch-container {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
}

/* Collapsed Notch (Camera Pill) */
.notch-trigger-area {
  display: flex;
  justify-content: center;
  cursor: pointer;
  padding-bottom: 8px;
}

.notch-hardware-pill {
  width: 170px;
  height: 26px;
  background: #000000;
  border-radius: 0 0 14px 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.8);
  transition: width var(--duration-spring) var(--ease-spring), height var(--duration-spring) var(--ease-spring), border-radius var(--duration-spring) var(--ease-spring);
}

.camera-lens {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #2a3b5c 0%, #060a12 70%);
  box-shadow: inset 0 0 2px rgba(255, 255, 255, 0.4);
}

.green-indicator {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: transparent;
  transition: background var(--duration-fast);
}

.green-indicator.active {
  background: #30D158;
  box-shadow: 0 0 6px #30D158;
}

/* Expanded Notch Panel */
.notch-expanded-panel {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) scale(0.96);
  opacity: 0;
  pointer-events: none;
  width: 660px;
  height: 350px;
  border-radius: 0 0 24px 24px;
  background: rgba(18, 20, 26, 0.94);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-top: none;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  padding: 10px 14px 14px;
  transition: opacity var(--duration-spring) var(--ease-spring), transform var(--duration-spring) var(--ease-spring);
}

/* Hover or Active Expanded State */
.notch-container:hover .notch-expanded-panel,
.notch-container.is-expanded .notch-expanded-panel {
  opacity: 1;
  transform: translateX(-50%) scale(1);
  pointer-events: auto;
}

.notch-container:hover .notch-hardware-pill,
.notch-container.is-expanded .notch-hardware-pill {
  width: 190px;
  height: 28px;
}

/* Panel Header: Dual Ears flanking camera */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 32px;
}

.left-ear {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.ear-brand {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ear-icon {
  width: 18px;
  height: 18px;
}

.ear-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ear-tab-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid transparent;
  color: #98989f;
  font-size: 0.74rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.ear-tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #f5f5f7;
}

.ear-tab-btn.active {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  font-weight: 600;
}

.center-camera-gap {
  width: 170px;
  height: 26px;
  flex-shrink: 0;
}

.right-ear {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex: 1;
}

.ear-icon-btn {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: transparent;
  border: none;
  color: #98989f;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.ear-icon-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.panel-divider {
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 8px 0;
}

/* Panel Body & Tab Panes */
.panel-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.tab-pane {
  display: none;
  width: 100%;
  height: 100%;
  animation: fadeIn var(--duration-normal) var(--ease-spring);
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tab 1: Music Hero Card */
.music-hero-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.album-art-wrap {
  position: relative;
}

.album-art {
  width: 54px;
  height: 54px;
  border-radius: 8px;
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.music-source-badge {
  position: absolute;
  bottom: -4px;
  right: -4px;
  font-size: 0.6rem;
  font-weight: 700;
  background: #1DB954;
  color: #000;
  padding: 1px 4px;
  border-radius: 4px;
}

.music-meta {
  flex: 1;
  min-width: 0;
}

.track-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.track-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #f5f5f7;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-badge {
  font-size: 0.65rem;
  font-weight: 700;
  background: rgba(48, 209, 88, 0.2);
  color: #30D158;
  padding: 1px 6px;
  border-radius: 4px;
}

.track-artist {
  font-size: 0.76rem;
  color: #98989f;
  display: block;
  margin-bottom: 8px;
}

.scrubber-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.scrubber-fill {
  height: 100%;
  background: var(--accent-blue);
  border-radius: 2px;
}

.scrubber-time {
  display: flex;
  justify-content: space-between;
  font-size: 0.65rem;
  color: #636366;
  font-family: var(--font-mono);
  margin-top: 3px;
}

.playback-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.audio-btn {
  background: transparent;
  border: none;
  color: #f5f5f7;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.audio-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.play-pause-btn {
  background: rgba(255, 255, 255, 0.15);
}

.play-pause-btn .play-icon { display: none; }
.play-pause-btn .pause-icon { display: block; }
.play-pause-btn.paused .play-icon { display: block; }
.play-pause-btn.paused .pause-icon { display: none; }

/* Animated Waveform */
.live-waveform {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 24px;
  padding: 0 4px;
}

.wave-bar {
  width: 3px;
  background: var(--accent-blue);
  border-radius: 2px;
  animation: pulseWave 1s infinite ease-in-out;
}

.bar-1 { height: 12px; animation-delay: 0.1s; }
.bar-2 { height: 20px; animation-delay: 0.3s; }
.bar-3 { height: 8px;  animation-delay: 0.2s; }
.bar-4 { height: 22px; animation-delay: 0.4s; }
.bar-5 { height: 16px; animation-delay: 0.25s; }
.bar-6 { height: 10px; animation-delay: 0.15s; }
.bar-7 { height: 18px; animation-delay: 0.35s; }
.bar-8 { height: 14px; animation-delay: 0.05s; }

.live-waveform.paused .wave-bar {
  animation-play-state: paused;
  height: 4px !important;
}

@keyframes pulseWave {
  0%, 100% { transform: scaleY(0.4); }
  50% { transform: scaleY(1.1); }
}

.overview-quick-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.quick-stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  text-align: left;
}

.stat-title {
  display: block;
  font-size: 0.68rem;
  color: #98989f;
  margin-bottom: 2px;
}

.stat-value {
  font-size: 0.8rem;
  font-weight: 600;
  color: #f5f5f7;
}

/* Tab 2: Clipboard Carousel */
.clipboard-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.filter-pills {
  display: flex;
  gap: 4px;
}

.filter-pill {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: #98989f;
  cursor: pointer;
}

.filter-pill.active {
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 600;
}

.mock-input {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 0.7rem;
  color: #f5f5f7;
  outline: none;
}

.clipboard-carousel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.clip-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xs);
  padding: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 140px;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.clip-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-blue);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.card-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
}

.badge-link { background: rgba(10, 132, 255, 0.2); color: #0A84FF; }
.badge-code { background: rgba(191, 90, 242, 0.2); color: #BF5AF2; }
.badge-color { background: rgba(255, 159, 10, 0.2); color: #FF9F0A; }

.card-time {
  font-size: 0.65rem;
  color: #636366;
}

.card-body-text {
  font-size: 0.76rem;
  color: #f5f5f7;
  word-break: break-all;
}

.link-text {
  color: #0A84FF;
}

.card-code {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #30D158;
  white-space: pre-wrap;
  word-break: break-word;
}

.color-preview-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.color-label {
  font-size: 0.72rem;
  color: #f5f5f7;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.65rem;
  color: #636366;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 6px;
}

.card-copy-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #f5f5f7;
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 4px;
  cursor: pointer;
}

.card-copy-btn:hover {
  background: var(--accent-blue);
}

/* Tab 3: File Shelf */
.shelf-drop-zone {
  border: 1.5px dashed rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-sm);
  padding: 12px;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.shelf-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.shelf-instruction {
  font-size: 0.74rem;
  color: #98989f;
}

.airdrop-all-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(10, 132, 255, 0.2);
  border: 1px solid rgba(10, 132, 255, 0.4);
  color: #0A84FF;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.airdrop-all-btn:hover {
  background: #0A84FF;
  color: #ffffff;
}

.shelf-items-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.shelf-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
}

.shelf-icon-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 6px;
  color: #ffffff;
}

.pdf-badge { background: #ef4444; }
.dmg-badge { background: #0A84FF; }
.img-badge { background: #10b981; }

.shelf-filename {
  font-size: 0.74rem;
  font-weight: 600;
  color: #f5f5f7;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.shelf-filesize {
  font-size: 0.65rem;
  color: #636366;
}

/* Tab 4: Jotter */
.jotter-split-view {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 12px;
  height: 100%;
}

.jotter-scratchpad, .jotter-checklist {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-xs);
  padding: 10px;
  display: flex;
  flex-direction: column;
}

.jotter-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.jotter-label {
  font-size: 0.74rem;
  font-weight: 700;
  color: #f5f5f7;
}

.jotter-sub {
  font-size: 0.65rem;
  color: #636366;
}

.mock-textarea {
  flex: 1;
  background: transparent;
  border: none;
  color: #f5f5f7;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.4;
  outline: none;
  white-space: pre-wrap;
  resize: none;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: #f5f5f7;
  cursor: pointer;
}

.mock-checkbox {
  accent-color: var(--accent-blue);
  cursor: pointer;
}

.check-text.completed {
  text-decoration: line-through;
  color: #636366;
}

/* Tab 5: Calendar & Focus Timer */
.calendar-timer-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 12px;
  height: 100%;
}

.mini-calendar-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-xs);
  padding: 10px;
}

.cal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.cal-month-title {
  font-size: 0.76rem;
  font-weight: 700;
  color: #f5f5f7;
}

.cal-today-pill {
  font-size: 0.65rem;
  font-weight: 600;
  background: rgba(10, 132, 255, 0.2);
  color: #0A84FF;
  padding: 1px 6px;
  border-radius: 4px;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  text-align: center;
  font-size: 0.68rem;
}

.day-head {
  color: #636366;
  font-weight: 600;
  padding-bottom: 3px;
}

.day-cell {
  padding: 3px 0;
  border-radius: 4px;
  color: #f5f5f7;
}

.day-cell.muted { color: #3a3a3c; }
.day-cell.active-day {
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 700;
}

.focus-timer-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-xs);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.timer-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.timer-mode-badge {
  font-size: 0.74rem;
  font-weight: 700;
  color: #FF9F0A;
}

.cal-sync-status {
  font-size: 0.65rem;
  color: #30D158;
}

.timer-display-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 12px 0;
}

.timer-countdown {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #f5f5f7;
  letter-spacing: -0.02em;
}

.timer-play-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #FF9F0A;
  border: none;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(255, 159, 10, 0.4);
  transition: transform var(--duration-fast);
}

.timer-play-btn:hover {
  transform: scale(1.05);
}

.timer-presets {
  display: flex;
  gap: 6px;
}

.preset-pill {
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  color: #98989f;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.preset-pill:hover, .preset-pill.active {
  background: rgba(255, 159, 10, 0.2);
  color: #FF9F0A;
  font-weight: 600;
}

/* Tab 6: Weather Dashboard */
.weather-dashboard {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}

.weather-main-row {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-xs);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.weather-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.weather-icon-cloud {
  color: #60a5fa;
}

.city-name-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.city-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #f5f5f7;
}

.condition-name {
  font-size: 0.8rem;
  color: #98989f;
}

.weather-sub {
  font-size: 0.72rem;
  color: #636366;
}

.weather-temp-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.temp-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: #f5f5f7;
  letter-spacing: -0.02em;
}

.temp-unit-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
}

.unit-btn {
  background: transparent;
  border: none;
  color: #98989f;
  font-size: 0.68rem;
  padding: 2px 6px;
  cursor: pointer;
}

.unit-btn.active {
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 600;
}

.smart-advice-banner {
  background: rgba(255, 159, 10, 0.1);
  border: 1px solid rgba(255, 159, 10, 0.25);
  border-radius: var(--radius-xs);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  color: #f5f5f7;
}

.advice-sparkle { font-size: 1rem; }

.forecast-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.forecast-cell {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-xs);
  padding: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 0.68rem;
}

.forecast-cell.active {
  background: rgba(10, 132, 255, 0.12);
  border-color: rgba(10, 132, 255, 0.3);
}

.fc-time { color: #98989f; }
.fc-icon { font-size: 0.95rem; }
.fc-temp { font-weight: 700; color: #f5f5f7; }

/* Desktop Wallpaper background */
.desktop-wallpaper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 60%, rgba(20, 24, 38, 0.6) 0%, transparent 80%);
}

.desktop-widgets-mock {
  text-align: center;
  opacity: 0.5;
}

.desktop-tip {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.2);
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* MacBook Base */
.macbook-base {
  background: var(--macbook-base);
  height: 16px;
  border-radius: 0 0 16px 16px;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.macbook-notch-indent {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 6px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 0 0 4px 4px;
}

/* --- Real Native Screenshot Gallery Card --- */
.gallery-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.gallery-nav-pills {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.gallery-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.gallery-pill:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-medium);
  transform: translateY(-1px);
}

.gallery-pill.active {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
  box-shadow: 0 4px 14px var(--accent-blue-glow);
}

.pill-icon {
  font-size: 1rem;
}

.native-screenshot-card {
  max-width: 880px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}

.screenshot-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.15);
  border-bottom: 1px solid var(--border-subtle);
}

.window-dots {
  display: flex;
  gap: 7px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.window-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.window-fake-space {
  width: 44px;
}

.screenshot-img-wrap {
  background: #0d0f15;
  padding: 24px;
  display: flex;
  justify-content: center;
}

.real-screenshot-img {
  width: 100%;
  max-width: 760px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  display: block;
}

.screenshot-caption {
  padding: 12px 16px;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-align: center;
  border-top: 1px solid var(--border-subtle);
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--duration-fast) var(--ease-spring), border-color var(--duration-fast) var(--ease-smooth), box-shadow var(--duration-fast) var(--ease-smooth);
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-highlight);
  box-shadow: var(--glass-shadow);
}

.card-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-music { background: rgba(236, 72, 153, 0.15); color: #ec4899; }
.icon-clip { background: rgba(10, 132, 255, 0.15); color: #0A84FF; }
.icon-shelf { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.icon-jotter { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.icon-timer { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.icon-weather { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.icon-tools { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.icon-hardware { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-body {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-secondary);
  flex: 1;
  margin-bottom: 18px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* --- Architecture Diagram --- */
.arch-diagram-card {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.arch-block {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  text-align: left;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.arch-block.highlight {
  border-color: var(--accent-blue);
  background: var(--bg-surface-elevated);
}

.arch-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.arch-block h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.arch-block p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.arch-block code {
  font-family: var(--font-mono);
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
}

.arch-arrow {
  font-size: 1.4rem;
  color: var(--accent-blue);
  line-height: 1;
}

/* --- Privacy Manifesto --- */
.privacy-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--glass-shadow);
}

.privacy-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.privacy-shield { font-size: 1.8rem; }

.privacy-header h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.privacy-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 720px;
}

.privacy-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.point-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.point-check {
  font-size: 1rem;
  font-weight: 800;
  color: var(--accent-green);
  line-height: 1.2;
}

.point-item strong {
  color: var(--text-primary);
}

.point-item code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-card);
  padding: 1px 4px;
  border-radius: 3px;
}

/* --- Shortcuts Table --- */
.table-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.shortcuts-table th {
  background: var(--bg-card);
  padding: 14px 20px;
  font-weight: 600;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.shortcuts-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

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

.shortcuts-table td strong {
  color: var(--text-primary);
}

kbd {
  display: inline-block;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--bg-card-hover);
  border: 1px solid var(--border-medium);
  border-radius: 5px;
  color: var(--text-primary);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

/* --- Frequently Asked Questions (FAQ) Section --- */
.faq-section {
  padding: 80px 24px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.faq-accordion-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 1100px;
  margin: 40px auto 0;
  align-items: start;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.faq-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-medium);
}

.faq-item[open] {
  background: var(--bg-surface-elevated);
  border-color: var(--border-highlight);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--duration-fast);
}

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

.faq-question {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.faq-chevron {
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: transform var(--duration-normal) var(--ease-spring), color var(--duration-fast);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  color: var(--accent-blue);
}

.faq-answer {
  padding: 0 20px 20px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  border-top: 1px solid transparent;
  animation: faqFadeIn var(--duration-normal) var(--ease-smooth);
}

.faq-item[open] .faq-answer {
  border-top-color: var(--border-subtle);
  padding-top: 14px;
}

.faq-answer p {
  margin: 0;
}

.faq-answer code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-card-active);
  padding: 2px 5px;
  border-radius: 4px;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.faq-footer-note {
  max-width: 680px;
  margin: 40px auto 0;
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.faq-footer-note a {
  color: var(--accent-blue);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--duration-fast);
}

.faq-footer-note a:hover {
  text-decoration: underline;
  color: var(--accent-blue-hover);
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Download Section --- */
.download-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 60px 24px;
  max-width: 820px;
  margin: 0 auto;
  box-shadow: var(--glass-shadow);
}

.download-app-icon {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  margin-bottom: 20px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.download-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.download-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 36px;
}

.download-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.btn-lfs-download {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 8px 24px var(--accent-blue-glow);
  transition: all var(--duration-fast) var(--ease-spring);
}

.btn-lfs-download:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-2px);
}

.btn-primary-text {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-secondary-text {
  font-size: 0.74rem;
  opacity: 0.85;
  font-family: var(--font-mono);
}

.btn-secondary-github {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--duration-fast);
}

.btn-secondary-github:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.install-steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
  text-align: center;
}

.install-step {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.install-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.install-step p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.install-step code {
  font-family: var(--font-mono);
  background: var(--bg-card-hover);
  padding: 1px 4px;
  border-radius: 3px;
}

.system-reqs {
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* --- Site Footer --- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 40px 24px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 6px;
}

.footer-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
}

.footer-text {
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.footer-text a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-text a:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast);
}

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

/* --- Responsive Breakpoints --- */
@media (max-width: 900px) {
  .nav-menu { display: none; }
  .macbook-screen { height: 420px; }
  .notch-expanded-panel { width: 560px; height: 320px; }
  .center-camera-gap { width: 140px; }
  .ear-tab-btn span { display: none; }
  .ear-tab-btn { padding: 4px; }
  .clipboard-carousel { grid-template-columns: 1fr; }
  .jotter-split-view { grid-template-columns: 1fr; }
  .install-steps-row { grid-template-columns: 1fr; }
  .faq-accordion-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero-headline { font-size: 2.2rem; }
  .macbook-lid { padding: 6px 6px 0; }
  .macbook-screen { height: 380px; }
  .notch-expanded-panel { width: 92%; height: 300px; }
  .overview-quick-strip { grid-template-columns: 1fr; }
  .calendar-timer-grid { grid-template-columns: 1fr; }
}