:root {
  --color-primary: #ffffff;
  --color-secondary: rgba(255, 255, 255, 0.7);
  --color-accent: #00ff88;
  --color-bg: #000000;
  --spacing-xxl: clamp(40px, 8vw, 120px);
  --spacing-xl: clamp(30px, 6vw, 80px);
  --spacing-lg: clamp(20px, 4vw, 60px);
  --spacing-md: clamp(15px, 3vw, 40px);
  --spacing-sm: clamp(10px, 2vw, 20px);
  --font-size-hero: clamp(3rem, 10vw, 8rem);
  --font-size-title: clamp(2rem, 6vw, 5rem);
  --font-size-subtitle: clamp(1rem, 2vw, 1.5rem);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-primary);
  overflow-x: hidden;
  line-height: 1.2;
  font-weight: 700;
}

/* Canvas Background with Different States */
#scene-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  opacity: 0.8;
  transition: opacity 1.5s ease;
}

#scene-canvas {
  width: 100%;
  height: 100%;
}

/* Loading Screen */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: opacity 0.8s ease;
}

.loading-progress {
  width: 200px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  margin-top: var(--spacing-md);
  overflow: hidden;
  border-radius: 1px;
}

.loading-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

/* Main Content */
.main-content {
  position: relative;
  z-index: 1;
}

/* Sections */
.section {
  position: relative;
  min-height: 100vh;
  padding: var(--spacing-xxl) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.section-content {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* Typography Styles */
.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.85;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: var(--font-size-title);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.9;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-subtitle);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.7;
  margin-bottom: var(--spacing-lg);
}

.cinematic-line {
  display: block;
  overflow: hidden;
}

.cinematic-word {
  display: inline-block;
  transform: translateY(100%);
  opacity: 0;
}

/* Cinematic Background Layers */
.bg-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0;
  transition: opacity 1s ease;
}

.bg-layer.active {
  opacity: 1;
}

.bg-layer.wireframe {
  background: radial-gradient(
    circle at 30% 50%,
    rgba(0, 255, 136, 0.1) 0%,
    transparent 50%
  );
}

.bg-layer.garden {
  background: radial-gradient(
    circle at 70% 50%,
    rgba(255, 255, 0, 0.1) 0%,
    transparent 50%
  );
}

.bg-layer.final {
  background: radial-gradient(
    circle at 50% 50%,
    rgba(136, 0, 255, 0.1) 0%,
    transparent 60%
  );
}

/* Audio Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.audio-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: var(--spacing-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
}

.audio-card:hover {
  transform: translateY(-8px) scale(1.02);
  background: rgba(255, 255, 255, 0.08);
}

.audio-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s ease;
}

.audio-card:hover::before {
  transform: scaleX(1);
}

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

.card-name {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.card-role {
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Audio Player */
.audio-player {
  margin-top: var(--spacing-md);
}

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

.play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-bg);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.play-btn:hover {
  transform: scale(1.1);
  background: var(--color-accent);
}

.player-info {
  flex: 1;
}

.progress-container {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
  cursor: pointer;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.1s linear;
}

.time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0.7;
}

/* Quiz Section */
.quiz-section {
  text-align: center;
}

.quiz-options {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.quiz-option {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 400px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.quiz-option:hover {
  transform: translateY(-5px) scale(1.02);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.quiz-option.active {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-primary);
}

.option-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
}

/* Product Reveal */
.product-reveal {
  position: relative;
  text-align: center;
}

.product-image {
  max-width: 300px;
  margin: var(--spacing-xl) auto;
  filter: drop-shadow(0 0 40px rgba(0, 255, 136, 0.3));
  opacity: 0;
  transform: scale(0.8);
}

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transform-origin: left;
  transform: scaleX(0);
}

.scroll-progress-bar {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--color-accent), #00ccff);
  transform-origin: left;
  transform: scaleX(0);
}

/* Navigation Dots */
.nav-dots {
  position: fixed;
  right: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 100;
}

.nav-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.nav-dot.active {
  background: var(--color-primary);
  transform: scale(1.3);
}

.nav-dot::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav-dot.active::after {
  border-color: var(--color-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

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

  .quiz-options {
    flex-direction: column;
    align-items: center;
  }

  .quiz-option {
    max-width: 100%;
  }

  .nav-dots {
    right: var(--spacing-sm);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}