/* ===========================
   ElevenLabs-Inspired Design
   Simulisten Dual Audio App
   =========================== */

/* CSS Variables */
:root {
  /* Colors */
  --black: #0a1224;
  --gray-50: #f5f8fc;
  --gray-100: #eaf0f8;
  --gray-200: #d7e1ee;
  --gray-300: #b7c6da;
  --gray-400: #8fa3bf;
  --gray-500: #6a7f9c;
  --gray-600: #4a5e79;
  --gray-700: #33465f;
  --gray-800: #1f2b3d;
  --gray-900: #0f1623;
  --white: #ffffff;
  
  /* Brand Colors */
  --primary: #1f4aa8;         /* deep tech blue */
  --primary-hover: #1a3e8f;
  --gradient-from: #1f4aa8;   /* blue */
  --gradient-to: #19c2d0;     /* electric cyan */
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Animation */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-900);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  height: 64px;
}

.nav-brand h1 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.025em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--gray-600);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: var(--spacing-sm);
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition-base);
}

/* Buttons */
.btn-primary {
  background: var(--black);
  color: var(--white);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--gray-800);
  transform: translateY(-1px);
}

.btn-primary.large {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-base);
}

.btn-secondary {
  background: transparent;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.btn-demo {
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--gray-700);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.btn-demo:hover {
  color: var(--black);
}

/* Hero Section */
.hero {
  padding: calc(64px + var(--spacing-4xl)) var(--spacing-lg) var(--spacing-4xl);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-content {
  max-width: 500px;
}

.hero-badge {
  display: inline-block;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-2xl);
  margin-bottom: var(--spacing-lg);
}

.badge-text {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.1;
  color: var(--black);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.025em;
}

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

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

/* Audio Visualizer */
.hero-visual {
  display: flex;
  justify-content: center;
}

.audio-visualizer {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 400px;
}

.visualizer-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.audio-track {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--gray-200);
}

.track-1 {
  border-left: 4px solid var(--primary);
}

.track-2 {
  border-left: 4px solid var(--gradient-to);
}

.track-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
}

.waveform {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 60px;
  margin-bottom: var(--spacing-md);
}

.waveform--advanced {
  height: 72px;
  gap: 4px;
}

.waveform--advanced .wave-bar {
  width: 6px;
  flex: 0 0 6px;
  min-height: 6px;
  height: calc(var(--height, 0.4) * 72px);
  border-radius: 6px;
  transform-origin: bottom;
  background: var(--primary);
  background: linear-gradient(180deg, color-mix(in srgb, var(--primary) 85%, #ffffff 15%), var(--primary));
  box-shadow: 0 2px 10px rgba(31, 74, 168, 0.2);
  animation: wavePulse var(--speed) ease-in-out infinite;
  animation-delay: var(--delay);
}

.track-2 .waveform--advanced .wave-bar {
  background: var(--gradient-to);
  background: linear-gradient(180deg, color-mix(in srgb, var(--gradient-to) 85%, #ffffff 15%), var(--gradient-to));
  box-shadow: 0 2px 10px rgba(25, 194, 208, 0.25);
}

.waveform--advanced .wave-bar:nth-child(1)  { --height: 0.25; --speed: 1.6s; --delay: 0s; }
.waveform--advanced .wave-bar:nth-child(2)  { --height: 0.55; --speed: 1.9s; --delay: 0.1s; }
.waveform--advanced .wave-bar:nth-child(3)  { --height: 0.35; --speed: 1.7s; --delay: 0.2s; }
.waveform--advanced .wave-bar:nth-child(4)  { --height: 0.75; --speed: 2.1s; --delay: 0.15s; }
.waveform--advanced .wave-bar:nth-child(5)  { --height: 0.45; --speed: 1.8s; --delay: 0.25s; }
.waveform--advanced .wave-bar:nth-child(6)  { --height: 0.85; --speed: 2.2s; --delay: 0.05s; }
.waveform--advanced .wave-bar:nth-child(7)  { --height: 0.50; --speed: 1.95s; --delay: 0.3s; }
.waveform--advanced .wave-bar:nth-child(8)  { --height: 0.70; --speed: 2.0s; --delay: 0.2s; }
.waveform--advanced .wave-bar:nth-child(9)  { --height: 0.40; --speed: 1.75s; --delay: 0.35s; }
.waveform--advanced .wave-bar:nth-child(10) { --height: 0.65; --speed: 2.05s; --delay: 0.1s; }
.waveform--advanced .wave-bar:nth-child(11) { --height: 0.30; --speed: 1.7s; --delay: 0.4s; }
.waveform--advanced .wave-bar:nth-child(12) { --height: 0.60; --speed: 1.9s; --delay: 0.2s; }

@keyframes wavePulse {
  0%, 100% { transform: scaleY(0.65); opacity: 0.9; }
  50% { transform: scaleY(1); opacity: 1; }
}

.track-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.control-btn {
  width: 32px;
  height: 32px;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.volume-control {
  flex: 1;
}

.volume-slider {
  width: 100%;
  height: 6px;
  background: var(--gray-200);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}

.volume-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
  transition: width var(--transition-base);
}

.track-2 .volume-fill {
  background: var(--gradient-to);
}

/* Section Styles */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-4xl) var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: var(--spacing-md);
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, var(--font-size-4xl));
  font-weight: 700;
  color: var(--black);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  line-height: 1.6;
}

/* Features Section */
.features {
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(circle at top left, rgba(31, 74, 168, 0.05), transparent 60%);
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gray-300);
}

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

.feature-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.feature-num {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gray-300);
}

.feature-icon {
  width: 46px;
  height: 46px;
  background: var(--black);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
}

.feature-card h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--black);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  line-height: 1.65;
}

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

@media (max-width: 560px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* Demo Section */
.demo-section {
  background: var(--gray-50);
}

.demo-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.demo-text h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--black);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.025em;
}

.demo-text p {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
}

.demo-stats {
  display: flex;
  gap: var(--spacing-xl);
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--black);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--gray-500);
  font-weight: 500;
}

/* Demo Player */
.demo-player {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.player-interface {
  padding: var(--spacing-xl);
}

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

.player-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--black);
}

.demo-toggle {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  padding: 2px;
}

.toggle-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-btn.active {
  background: var(--white);
  color: var(--black);
  box-shadow: var(--shadow-sm);
}

.demo-tracks {
  margin-bottom: var(--spacing-lg);
}

.demo-track {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
  border: 1px solid var(--gray-200);
}

.demo-track.secondary {
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.track-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.track-title {
  font-weight: 500;
  color: var(--black);
  font-size: var(--font-size-sm);
}

.track-artist {
  color: var(--gray-500);
  font-size: var(--font-size-xs);
}

.track-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition-base);
}

.time {
  font-size: var(--font-size-xs);
  color: var(--gray-500);
  min-width: 60px;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.play-btn {
  width: 48px;
  height: 48px;
  background: var(--black);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.volume-controls {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.volume-track {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.volume-track label {
  font-size: var(--font-size-xs);
  color: var(--gray-600);
  min-width: 100px;
}

.volume-track input[type="range"] {
  flex: 1;
  height: 4px;
  background: var(--gray-200);
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.volume-track input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
}

.volume-track input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* Use Cases Section */
.use-cases {
  background: var(--white);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.use-case-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.use-case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gray-300);
}

.use-case-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-50));
}

.use-case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.use-case-tag {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  background: rgba(10, 18, 36, 0.85);
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 999px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.use-case-card figcaption {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--black);
  margin: var(--spacing-lg) var(--spacing-lg) var(--spacing-sm);
}

.use-case-card p {
  color: var(--gray-600);
  margin: 0 var(--spacing-lg) var(--spacing-xl);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--black);
  color: var(--white);
  padding: var(--spacing-4xl) var(--spacing-lg) var(--spacing-xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-4xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  color: var(--gray-400);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: var(--spacing-4xl);
}

.link-group h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--gray-300);
}

.link-group a {
  display: block;
  color: var(--gray-400);
  text-decoration: none;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.link-group a:hover {
  color: var(--white);
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--gray-800);
  text-align: center;
}

.footer-bottom p {
  color: var(--gray-500);
  font-size: var(--font-size-sm);
}

/* Demo Page Sections */
.demo-page {
  font-family: 'Manrope', 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, #0d1326 0%, #060913 55%, #04060b 100%);
  color: #e9f1ff;
}

.demo-page .section-container {
  background: transparent;
}

/* Home Page Neon Theme */
.home-page {
  font-family: 'Manrope', 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, #0d1326 0%, #060913 55%, #04060b 100%);
  color: #e9f1ff;
}

.home-page .navbar {
  background: rgba(6, 9, 19, 0.8);
  border-bottom: 1px solid rgba(58, 140, 255, 0.2);
  box-shadow: 0 10px 30px rgba(6, 9, 19, 0.6);
}

.home-page .nav-brand h1 {
  color: #f4f8ff;
  font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
}

.home-page .nav-links a {
  color: rgba(214, 228, 255, 0.8);
}

.home-page .nav-links a:hover {
  color: #ffffff;
}

.home-page .btn-primary {
  background: linear-gradient(135deg, #5b5bff 0%, #16c7ff 40%, #21f3b7 100%);
  border: none;
  color: #031019;
  box-shadow: 0 12px 30px rgba(33, 243, 183, 0.25), 0 0 24px rgba(22, 199, 255, 0.35);
}

.home-page .btn-primary:hover {
  background: linear-gradient(135deg, #7f7dff 0%, #2bd4ff 40%, #3ff7c7 100%);
}

.home-page .btn-secondary {
  background: rgba(8, 16, 34, 0.8);
  border: 1px solid rgba(91, 91, 255, 0.4);
  color: #d6e4ff;
  box-shadow: 0 10px 22px rgba(8, 16, 34, 0.5);
}

.home-page .btn-secondary:hover {
  border-color: rgba(33, 243, 183, 0.6);
}

.home-page .hero {
  position: relative;
  background: radial-gradient(circle at top left, rgba(91, 91, 255, 0.18), transparent 45%),
              radial-gradient(circle at 75% 20%, rgba(33, 243, 183, 0.18), transparent 50%),
              linear-gradient(135deg, #0c1228 0%, #060913 60%, #04060b 100%);
}

.home-page .hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(91, 91, 255, 0.35), transparent 45%),
              radial-gradient(circle at 80% 10%, rgba(22, 199, 255, 0.35), transparent 40%);
  pointer-events: none;
}

.home-page .hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 55%),
                    repeating-linear-gradient(90deg, rgba(91, 91, 255, 0.08) 0 1px, transparent 1px 120px);
  pointer-events: none;
}

.home-page .hero-container {
  position: relative;
  z-index: 1;
}

.home-page .hero-title,
.home-page .section-header h2,
.home-page .demo-text h2,
.home-page .use-case-card figcaption {
  font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
  color: #f4f8ff;
  text-shadow: 0 6px 18px rgba(4, 6, 11, 0.6);
}

.home-page .hero-description,
.home-page .section-header p,
.home-page .feature-card p,
.home-page .demo-text p,
.home-page .use-case-card p {
  color: rgba(223, 236, 255, 0.86);
}

.home-page .hero-badge {
  background: rgba(91, 91, 255, 0.16);
  border: 1px solid rgba(91, 91, 255, 0.4);
}

.home-page .badge-text {
  color: rgba(214, 228, 255, 0.9);
}

.home-page .gradient-text {
  background: linear-gradient(135deg, #5b5bff 0%, #16c7ff 45%, #21f3b7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-page .audio-visualizer {
  background: linear-gradient(145deg, rgba(11, 18, 38, 0.9), rgba(8, 14, 30, 0.95));
  border: 1px solid rgba(91, 91, 255, 0.25);
  box-shadow: 0 20px 40px rgba(4, 6, 11, 0.7), 0 0 25px rgba(22, 199, 255, 0.15);
}

.home-page .audio-track {
  background: rgba(7, 12, 28, 0.8);
  border: 1px solid rgba(91, 91, 255, 0.2);
}

.home-page .track-label {
  color: rgba(214, 228, 255, 0.9);
}

.home-page .features,
.home-page .demo-section,
.home-page .use-cases {
  background: transparent;
}

.home-page .feature-card,
.home-page .use-case-card {
  background: linear-gradient(145deg, rgba(11, 18, 38, 0.9), rgba(8, 14, 30, 0.95));
  border: 1px solid rgba(91, 91, 255, 0.25);
  box-shadow: 0 20px 40px rgba(4, 6, 11, 0.7), 0 0 25px rgba(22, 199, 255, 0.15);
}

.home-page .feature-card h3 {
  color: #eef4ff;
}

.home-page .feature-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.home-page .feature-num {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(91, 91, 255, 0.35);
}

.home-page .section-eyebrow {
  color: rgba(91, 91, 255, 0.75);
  background: rgba(91, 91, 255, 0.1);
  border: 1px solid rgba(91, 91, 255, 0.2);
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.1em;
}

.home-page .feature-icon {
  background: linear-gradient(135deg, #5b5bff, #21f3b7);
  color: #041018;
}

.home-page .demo-player {
  background: linear-gradient(145deg, rgba(11, 18, 38, 0.9), rgba(8, 14, 30, 0.95));
  border: 1px solid rgba(91, 91, 255, 0.25);
  box-shadow: 0 22px 44px rgba(4, 6, 11, 0.7), 0 0 30px rgba(22, 199, 255, 0.2);
}

.home-page .player-header h3,
.home-page .track-title,
.home-page .stat-number {
  color: #f4f8ff;
}

.home-page .track-artist,
.home-page .stat-label,
.home-page .time,
.home-page .volume-track label {
  color: rgba(206, 223, 255, 0.78);
}

.home-page .demo-toggle {
  background: rgba(91, 91, 255, 0.2);
}

.home-page .toggle-btn {
  color: rgba(214, 228, 255, 0.8);
}

.home-page .toggle-btn.active {
  background: rgba(15, 26, 59, 0.95);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(33, 243, 183, 0.2);
}

.home-page .play-btn {
  background: linear-gradient(135deg, #5b5bff, #21f3b7);
  color: #041018;
  box-shadow: 0 10px 22px rgba(33, 243, 183, 0.25);
}

.home-page .progress-bar {
  background: rgba(91, 91, 255, 0.2);
}

.home-page .progress-fill {
  background: linear-gradient(90deg, #5b5bff, #16c7ff, #21f3b7);
}

.home-page .volume-track input[type="range"]::-webkit-slider-thumb {
  background: #21f3b7;
  box-shadow: 0 0 12px rgba(33, 243, 183, 0.6);
}

.home-page .volume-track input[type="range"]::-moz-range-thumb {
  background: #21f3b7;
  box-shadow: 0 0 12px rgba(33, 243, 183, 0.6);
}

.home-page .demo-stats {
  gap: var(--spacing-lg);
}

.home-page .demo-content {
  grid-template-columns: 1fr;
  justify-items: start;
}

.home-page .demo-text {
  max-width: 780px;
}

.home-page .demo-section {
  padding-top: var(--spacing-4xl);
}

.home-page .use-case-image {
  background: linear-gradient(135deg, rgba(91, 91, 255, 0.2), rgba(33, 243, 183, 0.2));
}

/* ---- Track Builder ---- */
.home-page .track-builder {
  display: grid;
  grid-template-columns: 1fr 52px 1fr;
  align-items: start;
  margin-bottom: var(--spacing-xl);
}

.home-page .track-panel {
  background: linear-gradient(160deg, rgba(10, 17, 36, 0.94), rgba(7, 12, 26, 0.97));
  border: 1px solid rgba(91, 91, 255, 0.22);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 22px 46px rgba(4, 6, 11, 0.7), 0 0 28px rgba(22, 199, 255, 0.1);
  transition: border-color var(--transition-base);
}

.home-page .track-panel:hover {
  border-color: rgba(91, 91, 255, 0.38);
}

.home-page .track-panel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--spacing-lg);
}

.home-page .track-panel-header h3 {
  flex: 1;
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: #eef4ff;
  letter-spacing: -0.01em;
}

.home-page .track-panel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.home-page .dot-sm {
  width: 8px;
  height: 8px;
}

.home-page .dot-learn {
  background: #5b5bff;
  box-shadow: 0 0 8px rgba(91, 91, 255, 0.9);
}

.home-page .dot-music {
  background: #21f3b7;
  box-shadow: 0 0 8px rgba(33, 243, 183, 0.9);
}

.home-page .track-panel-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(170, 195, 255, 0.55);
  background: rgba(91, 91, 255, 0.1);
  border: 1px solid rgba(91, 91, 255, 0.2);
  padding: 3px 9px;
  border-radius: 999px;
}

.home-page .track-search-bar {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.home-page .track-search-bar .search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(160, 185, 230, 0.45);
  pointer-events: none;
}

.home-page .track-search-input {
  width: 100%;
  background: rgba(5, 9, 20, 0.85);
  border: 1px solid rgba(91, 91, 255, 0.18);
  border-radius: var(--radius-lg);
  color: #eef4ff;
  font-family: inherit;
  font-size: var(--font-size-sm);
  padding: 10px 12px 10px 36px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.home-page .track-search-input::placeholder {
  color: rgba(155, 180, 230, 0.38);
}

.home-page .track-search-input:focus {
  border-color: rgba(91, 91, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(91, 91, 255, 0.1);
}

.home-page .category-pills {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
  padding-bottom: 2px;
  scrollbar-width: none;
}

.home-page .category-pills::-webkit-scrollbar {
  display: none;
}

.home-page .pill {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid rgba(91, 91, 255, 0.22);
  background: rgba(91, 91, 255, 0.07);
  color: rgba(185, 208, 255, 0.68);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.home-page .pill:hover {
  border-color: rgba(91, 91, 255, 0.45);
  color: #d6e8ff;
  background: rgba(91, 91, 255, 0.14);
}

.home-page .pill.active {
  background: linear-gradient(135deg, rgba(91, 91, 255, 0.35), rgba(22, 199, 255, 0.2));
  border-color: rgba(91, 91, 255, 0.55);
  color: #f0f8ff;
  box-shadow: 0 0 10px rgba(91, 91, 255, 0.18);
}

.home-page .track-results {
  max-height: 316px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 5px;
  scrollbar-width: thin;
  scrollbar-color: rgba(91, 91, 255, 0.28) transparent;
}

.home-page .track-results::-webkit-scrollbar {
  width: 3px;
}

.home-page .track-results::-webkit-scrollbar-thumb {
  background: rgba(91, 91, 255, 0.3);
  border-radius: 2px;
}

.home-page .track-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 11px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: rgba(7, 11, 24, 0.65);
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.home-page .track-item::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background var(--transition-fast);
}

.home-page .track-item:hover {
  background: rgba(91, 91, 255, 0.1);
  border-color: rgba(91, 91, 255, 0.2);
}

.home-page .track-item:hover::after {
  background: rgba(91, 91, 255, 0.6);
}

.home-page .track-item.selected {
  background: rgba(91, 91, 255, 0.13);
  border-color: rgba(91, 91, 255, 0.45);
  box-shadow: 0 0 16px rgba(91, 91, 255, 0.12);
}

.home-page .track-item.selected::after {
  background: linear-gradient(180deg, #5b5bff, #21f3b7);
}

.home-page .track-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-page .track-item-icon svg {
  width: 16px;
  height: 16px;
  stroke: #fff;
}

.home-page .icon-audiobook { background: linear-gradient(135deg, #3b4bef, #5b8aff); }
.home-page .icon-podcast   { background: linear-gradient(135deg, #16c7ff, #1a88b5); }
.home-page .icon-ambient   { background: linear-gradient(135deg, #7c3aed, #a855f7); }
.home-page .icon-energetic { background: linear-gradient(135deg, #f97316, #e63b3b); }
.home-page .icon-focus     { background: linear-gradient(135deg, #21f3b7, #0fb37d); }

.home-page .track-item-info {
  flex: 1;
  min-width: 0;
}

.home-page .track-item-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #eef4ff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.home-page .track-item-meta {
  font-size: 11px;
  color: rgba(160, 185, 230, 0.58);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.home-page .track-item-duration {
  font-size: 11px;
  font-weight: 500;
  color: rgba(150, 175, 225, 0.5);
  white-space: nowrap;
  flex-shrink: 0;
}

.home-page .track-item-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #5b5bff, #21f3b7);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transform: scale(0.7);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.home-page .track-item-check svg {
  stroke: #041018;
}

.home-page .track-item.selected .track-item-check {
  opacity: 1;
  transform: scale(1);
}

.home-page .track-empty {
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  color: rgba(155, 180, 230, 0.45);
  font-size: var(--font-size-sm);
}

/* Connector between panels */
.home-page .tracks-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: 72px;
  gap: 10px;
  min-height: 200px;
}

.home-page .connector-line {
  flex: 1;
  width: 1px;
  max-height: 60px;
  background: linear-gradient(180deg, transparent, rgba(91, 91, 255, 0.28), transparent);
}

.home-page .connector-plus {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(91, 91, 255, 0.32);
  background: rgba(7, 11, 24, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(91, 91, 255, 0.8);
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(91, 91, 255, 0.1);
}

/* Session Bar */
.home-page .session-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  background: linear-gradient(145deg, rgba(10, 16, 34, 0.97), rgba(7, 12, 26, 0.99));
  border: 1px solid rgba(91, 91, 255, 0.25);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg) var(--spacing-xl);
  box-shadow: 0 20px 40px rgba(4, 6, 11, 0.6), 0 0 24px rgba(91, 91, 255, 0.07);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.home-page .session-bar.session-ready {
  border-color: rgba(33, 243, 183, 0.42);
  box-shadow: 0 20px 40px rgba(4, 6, 11, 0.6), 0 0 32px rgba(33, 243, 183, 0.18);
}

.home-page .session-bar-tracks {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  flex: 1;
  min-width: 0;
}

.home-page .session-slot {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1;
}

.home-page .session-slot-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(160, 185, 230, 0.55);
}

.home-page .session-slot-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(210, 225, 255, 0.4);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
}

.home-page .session-slot-title.has-selection {
  color: #eef4ff;
}

.home-page .session-slot-divider {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: rgba(91, 91, 255, 0.5);
  flex-shrink: 0;
  line-height: 1;
}

.home-page .session-cta {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  padding: 10px 22px;
  text-decoration: none;
  white-space: nowrap;
}

/* Mobile: stack panels vertically */
@media (max-width: 768px) {
  .home-page .track-builder {
    grid-template-columns: 1fr;
  }

  .home-page .tracks-connector {
    flex-direction: row;
    min-height: 0;
    padding-top: 0;
    padding: var(--spacing-xs) 0;
    height: auto;
    justify-content: center;
    gap: 8px;
  }

  .home-page .connector-line {
    flex: 1;
    width: auto;
    height: 1px;
    max-height: none;
    max-width: 60px;
    background: linear-gradient(90deg, transparent, rgba(91, 91, 255, 0.28), transparent);
  }

  .home-page .session-bar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }

  .home-page .session-bar-tracks {
    gap: var(--spacing-md);
  }

  .home-page .session-cta {
    width: 100%;
    justify-content: center;
    padding: 12px;
  }
}

.demo-page nav.navbar {
  background: rgba(6, 9, 19, 0.92);
  border-bottom: 1px solid rgba(58, 140, 255, 0.2);
  box-shadow: 0 10px 30px rgba(6, 9, 19, 0.6);
}

.demo-page .nav-brand h1 {
  color: #f4f8ff;
}

.demo-page .nav-brand h1,
.demo-page .section-header h2,
.demo-page .audio-card h3,
.demo-page .demo-hero .section-header h2 {
  font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
  letter-spacing: -0.01em;
}

.demo-page .nav-links a {
  color: rgba(214, 228, 255, 0.8);
}

.demo-page .nav-links a:hover {
  color: #ffffff;
}

.demo-page .audio-card h3 {
  color: #eef4ff;
}

.demo-page .section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: #f4f8ff;
  text-shadow: 0 6px 18px rgba(4, 6, 11, 0.6);
}

.demo-page .section-header p {
  color: rgba(223, 236, 255, 0.88);
  font-size: var(--font-size-lg);
}

.demo-page .btn-primary {
  background: linear-gradient(135deg, #5b5bff 0%, #16c7ff 40%, #21f3b7 100%);
  border: none;
  color: #031019;
  box-shadow: 0 12px 30px rgba(33, 243, 183, 0.25), 0 0 24px rgba(22, 199, 255, 0.35);
}

.demo-page .btn-primary:hover {
  background: linear-gradient(135deg, #7f7dff 0%, #2bd4ff 40%, #3ff7c7 100%);
}

.demo-page .btn-secondary {
  background: rgba(8, 16, 34, 0.8);
  border: 1px solid rgba(91, 91, 255, 0.4);
  color: #d6e4ff;
  box-shadow: 0 10px 22px rgba(8, 16, 34, 0.5);
}

.demo-page .btn-secondary:hover {
  border-color: rgba(33, 243, 183, 0.6);
}

.demo-hero {
  position: relative;
  overflow: hidden;
  padding: calc(64px + var(--spacing-4xl)) var(--spacing-lg) var(--spacing-3xl);
  background: radial-gradient(circle at top left, rgba(91, 91, 255, 0.18), transparent 45%),
              radial-gradient(circle at 75% 20%, rgba(33, 243, 183, 0.18), transparent 50%),
              linear-gradient(135deg, #0c1228 0%, #060913 60%, #04060b 100%);
}

.demo-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(91, 91, 255, 0.35), transparent 45%),
              radial-gradient(circle at 80% 10%, rgba(22, 199, 255, 0.35), transparent 40%);
  pointer-events: none;
}

.demo-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 55%),
                    repeating-linear-gradient(90deg, rgba(91, 91, 255, 0.08) 0 1px, transparent 1px 120px);
  pointer-events: none;
}

.demo-hero .section-container {
  position: relative;
  z-index: 1;
}

.demo-hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.demo-audio {
  background: transparent;
}

.audio-demo-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.audio-demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.audio-card {
  background: linear-gradient(145deg, rgba(11, 18, 38, 0.9), rgba(8, 14, 30, 0.95));
  border: 1px solid rgba(91, 91, 255, 0.25);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 20px 40px rgba(4, 6, 11, 0.7), 0 0 25px rgba(22, 199, 255, 0.15);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.audio-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 48px rgba(4, 6, 11, 0.75), 0 0 35px rgba(33, 243, 183, 0.25);
  border-color: rgba(33, 243, 183, 0.45);
}

.audio-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}


.audio-tag {
  font-size: var(--font-size-xs);
  color: rgba(204, 224, 255, 0.8);
  background: rgba(91, 91, 255, 0.18);
  padding: 4px 10px;
  border-radius: 999px;
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.audio-btn {
  background: linear-gradient(135deg, #1b2a52 0%, #0f1a3b 100%);
  color: var(--white);
  border: none;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.audio-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(16, 29, 51, 0.4), 0 0 14px rgba(91, 91, 255, 0.4);
}

.audio-time {
  font-size: var(--font-size-xs);
  color: rgba(206, 223, 255, 0.7);
}

.audio-progress {
  height: 6px;
  background: rgba(91, 91, 255, 0.2);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

.audio-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #5b5bff, #16c7ff, #21f3b7);
  width: 0%;
  transition: width var(--transition-fast);
}

.audio-volume {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: rgba(206, 223, 255, 0.7);
}

.audio-volume input[type="range"] {
  flex: 1;
  height: 4px;
  background: rgba(91, 91, 255, 0.2);
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.audio-volume input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: #21f3b7;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(33, 243, 183, 0.6);
}

.audio-volume input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: #21f3b7;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(33, 243, 183, 0.6);
}

.demo-checklist {
  background: linear-gradient(180deg, rgba(6, 9, 19, 0.9) 0%, rgba(8, 14, 30, 0.95) 100%);
}

.demo-page .footer {
  background: #03050a;
}

.demo-page .checklist li {
  background: linear-gradient(160deg, rgba(12, 18, 38, 0.9), rgba(8, 14, 30, 0.95));
  border: 1px solid rgba(91, 91, 255, 0.25);
  color: #e9f1ff;
  box-shadow: 0 14px 28px rgba(4, 6, 11, 0.7);
}

.demo-page .checklist li p {
  color: rgba(206, 223, 255, 0.78);
}

.demo-page .checklist li a {
  color: #21f3b7;
}

.demo-page .checklist li a:hover {
  color: #8fffe1;
}

.demo-page .check-icon {
  background: linear-gradient(135deg, #5b5bff, #21f3b7);
  color: #041018;
}

.checklist {
  list-style: none;
  display: grid;
  gap: var(--spacing-lg);
  padding: 0;
}

.checklist li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: var(--spacing-md);
  align-items: start;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.check-icon {
  width: 32px;
  height: 32px;
  background: var(--black);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .demo-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }
  
  .demo-stats {
    justify-content: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-links {
    gap: var(--spacing-2xl);
  }
  
  .hero-actions {
    justify-content: center;
    gap: var(--spacing-md);
  }
  
  .volume-controls {
    gap: var(--spacing-xs);
  }
  
  .volume-track label {
    min-width: 80px;
    font-size: 10px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-header h2 {
    font-size: var(--font-size-3xl);
  }
  
  .demo-text h2 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn-primary {
    width: 100%;
    justify-content: center;
  }
}

/* Early Access Section */
.home-page .early-access {
  background: transparent;
}

.home-page .early-access .section-container {
  padding-top: 0;
  padding-bottom: var(--spacing-4xl);
}

.home-page .early-access-card {
  max-width: 640px;
  margin: 0 auto;
  background: linear-gradient(145deg, rgba(10, 17, 36, 0.94), rgba(7, 12, 26, 0.97));
  border: 1px solid rgba(91, 91, 255, 0.28);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
  box-shadow: 0 24px 48px rgba(4, 6, 11, 0.7), 0 0 32px rgba(91, 91, 255, 0.12);
}

.home-page .early-access-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.home-page .early-access-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.5rem, 3vw, var(--font-size-3xl));
  font-weight: 700;
  color: #f4f8ff;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
  text-shadow: 0 6px 18px rgba(4, 6, 11, 0.6);
}

.home-page .early-access-desc {
  color: rgba(223, 236, 255, 0.75);
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.home-page .signup-name-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.home-page .signup-email-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.home-page .signup-input {
  width: 100%;
  background: rgba(5, 9, 20, 0.85);
  border: 1px solid rgba(91, 91, 255, 0.2);
  border-radius: var(--radius-lg);
  color: #eef4ff;
  font-family: inherit;
  font-size: var(--font-size-sm);
  padding: 11px 14px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.home-page .signup-input::placeholder {
  color: rgba(155, 180, 230, 0.38);
}

.home-page .signup-input:focus {
  border-color: rgba(91, 91, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(91, 91, 255, 0.1);
}

.home-page .signup-input.input-error {
  border-color: rgba(255, 80, 80, 0.6);
  box-shadow: 0 0 0 3px rgba(255, 80, 80, 0.1);
}

.home-page .signup-submit {
  white-space: nowrap;
  padding: 11px var(--spacing-lg);
  font-size: var(--font-size-sm);
}

.home-page .signup-disclaimer {
  font-size: var(--font-size-xs);
  color: rgba(155, 180, 230, 0.45);
  text-align: center;
  line-height: 1.5;
}

.home-page .signup-disclaimer a {
  color: rgba(91, 91, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.home-page .signup-disclaimer a:hover {
  color: rgba(91, 91, 255, 1);
}

.home-page .signup-success {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.home-page .signup-success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #5b5bff, #21f3b7);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  color: #041018;
}

.home-page .signup-success h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: #f4f8ff;
  margin-bottom: var(--spacing-sm);
}

.home-page .signup-success p {
  color: rgba(223, 236, 255, 0.75);
  font-size: var(--font-size-sm);
}

.home-page .signup-error {
  background: rgba(255, 60, 60, 0.08);
  border: 1px solid rgba(255, 60, 60, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.home-page .signup-error p {
  font-size: var(--font-size-sm);
  color: rgba(255, 150, 150, 0.9);
  text-align: center;
}

.home-page .signup-error a {
  color: rgba(255, 150, 150, 0.9);
}

@media (max-width: 600px) {
  .home-page .early-access-card {
    padding: var(--spacing-xl);
  }

  .home-page .signup-name-row {
    grid-template-columns: 1fr;
  }

  .home-page .signup-email-row {
    grid-template-columns: 1fr;
  }

  .home-page .signup-submit {
    width: 100%;
    justify-content: center;
  }
}

/* Animations & Interactions */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}