:root {
  --bg-primary: #0a0a0f;
  --panel-bg: rgba(18, 18, 26, 0.72);
  --panel-border: rgba(255, 255, 255, 0.08);
  --accent-color: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.4);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  user-select: none;
}

/* --- Fullscreen Video Background --- */
.video-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
}

/* --- Invisible Background Multi-Stream (Ghost Streams) --- */
.ghost-stream-pool {
  position: fixed;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  opacity: 0.001;
  pointer-events: none;
  overflow: hidden;
  z-index: -999;
}

.ghost-stream-pool iframe {
  width: 10px;
  height: 10px;
  border: 0;
  pointer-events: none;
}

.video-background iframe,
.video-background #player {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100vw;
  height: 56.25vw; /* 16:9 ratio */
  min-height: 100vh;
  min-width: 177.77vh; /* 16:9 ratio */
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(10, 10, 15, 0.1) 0%, rgba(10, 10, 15, 0.65) 100%),
              linear-gradient(to bottom, rgba(10, 10, 15, 0.6) 0%, transparent 20%, transparent 80%, rgba(10, 10, 15, 0.8) 100%);
  z-index: 2;
  pointer-events: none;
}

/* --- Auto-hide Interface during idle --- */
body.idle .top-bar,
body.idle .control-panel {
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}

body.idle .top-bar {
  transform: translateY(-20px);
}

/* --- Unmute Banner --- */
.unmute-banner {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  cursor: pointer;
  animation: slideDownBounce 0.6s ease forwards;
}

.unmute-content {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 22px;
  background: rgba(30, 41, 59, 0.9);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9999px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--accent-glow);
  font-size: 14px;
  color: #fff;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.unmute-content:hover {
  transform: scale(1.03);
  background: rgba(40, 55, 80, 0.95);
}

.pulse-icon {
  animation: pulse 1.5s infinite;
}

/* --- Top Bar --- */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 36px;
  z-index: 100;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

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

.live-dot {
  width: 10px;
  height: 10px;
  background-color: #ef4444;
  border-radius: 50%;
  box-shadow: 0 0 12px #ef4444;
  animation: blink 2s infinite;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #ffffff;
}

.brand-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text-muted);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* --- Bottom Control Panel --- */
.control-panel {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 28px;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  z-index: 100;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  max-width: 90vw;
}

/* Track Info */
.track-info {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 220px;
  max-width: 320px;
}

.equalizer {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 20px;
}

.equalizer .bar {
  width: 3px;
  background-color: var(--accent-color);
  border-radius: 3px;
  height: 6px;
  transition: height 0.2s ease;
}

.equalizer.playing .bar:nth-child(1) { animation: soundBar 0.8s ease infinite alternate; }
.equalizer.playing .bar:nth-child(2) { animation: soundBar 1.1s ease infinite alternate 0.2s; }
.equalizer.playing .bar:nth-child(3) { animation: soundBar 0.7s ease infinite alternate 0.4s; }
.equalizer.playing .bar:nth-child(4) { animation: soundBar 1.2s ease infinite alternate 0.1s; }

.track-text {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.track-status {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--accent-color);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.track-title {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-main);
}

/* Playback Controls */
.playback-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-control {
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border-radius: 50%;
  transition: transform var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.btn-control:hover {
  transform: scale(1.1);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.btn-play {
  width: 48px;
  height: 48px;
  background: var(--text-main);
  color: var(--bg-primary);
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.25);
}

.btn-play:hover {
  transform: scale(1.08);
  background: #ffffff;
  color: #000000;
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.35);
}

/* Volume */
.volume-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ffffff;
  cursor: pointer;
}

/* Generic Icon Button */
.icon-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.16);
}

/* --- Playlist Drawer --- */
.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 250;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.playlist-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  max-width: 90vw;
  height: 100vh;
  background: #111118;
  border-left: 1px solid var(--panel-border);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
  z-index: 300;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.playlist-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--panel-border);
}

.drawer-header h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: #ffffff;
}

.close-btn {
  background: none;
  border: none;
  font-size: 26px;
  color: var(--text-muted);
  cursor: pointer;
}

.close-btn:hover {
  color: #fff;
}

.drawer-body {
  padding: 24px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.list-header {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
  font-weight: 500;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.video-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateX(2px);
}

.video-item.active {
  border-color: var(--accent-color);
  background: rgba(59, 130, 246, 0.14);
}

.video-item-index {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  width: 20px;
  text-align: center;
}

.video-item.active .video-item-index {
  color: var(--accent-color);
}

.video-item-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex: 1;
}

.video-item-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.video-item-id {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.video-item-status {
  display: flex;
  align-items: center;
  justify-content: center;
}

.now-playing-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.8px;
  background: var(--accent-color);
  color: #fff;
  padding: 3px 6px;
  border-radius: 4px;
}

.play-hint {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--accent-color);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.video-item:hover .play-hint {
  opacity: 1;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 110px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 10px 20px;
  background: rgba(20, 20, 28, 0.95);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  z-index: 400;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Animations */
@keyframes blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

@keyframes soundBar {
  0% { height: 4px; }
  100% { height: 18px; }
}

@keyframes slideDownBounce {
  0% { transform: translate(-50%, -60px); opacity: 0; }
  70% { transform: translate(-50%, 4px); opacity: 1; }
  100% { transform: translate(-50%, 0); opacity: 1; }
}

/* Mobile responsive */
@media (max-width: 768px) {
  .top-bar {
    padding: 16px 20px;
  }
  .control-panel {
    bottom: 16px;
    padding: 10px 16px;
    gap: 14px;
    width: 94vw;
  }
  .track-info {
    min-width: 140px;
  }
  .volume-slider {
    display: none;
  }
}