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

html {
  scroll-behavior: smooth;
}

body {
  background: #000;
  color: #fff;
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#intro {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  position: relative;
  z-index: 100;
}

.intro-content {
  max-width: 480px;
  padding: 40px;
  text-align: center;
}

.intro-content h1 {
  font-size: 72px;
  font-weight: 300;
  letter-spacing: -2px;
  margin-bottom: 8px;
}

.intro-content .description {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 300;
}

.scroll-hint {
  margin-top: 60px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  animation: pulse 2s ease-in-out infinite;
}

.scroll-hint svg {
  opacity: 0.5;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50% { opacity: 0.6; transform: translateY(4px); }
}

#player-section {
  min-height: 100vh;
  position: relative;
  background: #000;
}

#player {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

#fade-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1s ease;
  z-index: 10;
}

#fade-overlay.active {
  opacity: 1;
}

#volume-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  cursor: pointer;
  opacity: 0.3;
  transition: opacity 0.3s ease, background 0.3s ease;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
}

#volume-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.25);
}

#volume-btn svg {
  width: 24px;
  height: 24px;
}

#volume-btn.muted #volume-icon {
  display: none;
}

#volume-btn.muted #mute-icon {
  display: block;
}

#volume-btn:not(.muted) #volume-icon {
  display: block;
}

#volume-btn:not(.muted) #mute-icon {
  display: none;
}

#location-info {
  position: fixed;
  bottom: 20px;
  left: 20px;
  font-family: 'SF Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  opacity: 0;
  transition: opacity 2s ease;
  z-index: 20;
  pointer-events: none;
}

#location-info.visible {
  opacity: 1;
}

#location-info .time {
  color: rgba(255, 255, 255, 0.8);
}