/* Audio Visualizer V2 — Brutální glassmorphism design */

:root {
  --accent-h: 270;
  --accent-s: 80%;
  --accent-l: 60%;
  --accent: hsl(var(--accent-h), var(--accent-s), var(--accent-l));
  --accent-dim: hsl(var(--accent-h), var(--accent-s), 35%);
  --accent-glow: hsl(var(--accent-h), 90%, 70%);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-blur: 20px;
  --text: rgba(255, 255, 255, 0.9);
  --text-dim: rgba(255, 255, 255, 0.5);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #080810;
  font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

/* ===== Canvas ===== */
#visualizer-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* ===== Progress Bar (top) ===== */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 100;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.05);
}

#progress-bar .fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  border-radius: 0 2px 2px 0;
  transition: width 0.1s linear;
}

#progress-bar:hover {
  height: 5px;
}

#progress-bar:hover .fill {
  box-shadow: 0 0 10px var(--accent-glow);
}

/* ===== Song Info (top center) ===== */
#song-info {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
}

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

#song-info .song-name {
  font-size: clamp(14px, 2.5vw, 22px);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-shadow: 0 0 20px rgba(0, 0, 0, 0.8), 0 0 40px rgba(0, 0, 0, 0.5);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 80vw;
}

#song-info .song-source {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ===== Intro Overlay ===== */
#intro-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(20, 10, 40, 0.95), rgba(5, 5, 10, 0.98));
  cursor: pointer;
  transition: opacity 0.8s ease, visibility 0.8s;
}

#intro-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#intro-overlay .intro-title {
  font-size: clamp(28px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #fff 0%, var(--accent-glow) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: intro-pulse 2s ease-in-out infinite;
}

#intro-overlay .intro-sub {
  font-size: clamp(12px, 2vw, 16px);
  color: var(--text-dim);
  margin-top: 16px;
  letter-spacing: 3px;
  text-transform: uppercase;
  animation: intro-fade 2s ease-in-out infinite;
}

@keyframes intro-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

@keyframes intro-fade {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.3; }
}

/* ===== Control Bar (bottom) ===== */
#control-bar {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: opacity var(--transition), transform var(--transition);
  max-width: calc(100vw - 40px);
}

#control-bar:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* Control buttons */
.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-glow);
}

.ctrl-btn:active {
  transform: scale(0.92);
}

.ctrl-btn.active {
  color: var(--accent-glow);
  background: rgba(255, 255, 255, 0.08);
}

.ctrl-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Separator */
.ctrl-sep {
  width: 1px;
  height: 28px;
  background: rgba(255, 255, 255, 0.08);
  flex-shrink: 0;
}

/* Volume slider */
.volume-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  background: var(--accent-glow);
  border-radius: 50%;
  border: none;
  box-shadow: 0 0 8px var(--accent);
  cursor: pointer;
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: var(--accent-glow);
  border-radius: 50%;
  border: none;
  box-shadow: 0 0 8px var(--accent);
  cursor: pointer;
}

/* Mode buttons */
.mode-btns {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.mode-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition);
}

.mode-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.mode-btn.active {
  color: var(--accent-glow);
  background: rgba(255, 255, 255, 0.1);
}

/* YouTube input */
.yt-input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 1;
  min-width: 0;
}

#yt-url-input {
  width: clamp(120px, 20vw, 240px);
  height: 36px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: var(--text);
  font-size: 12px;
  outline: none;
  transition: all var(--transition);
}

#yt-url-input::placeholder {
  color: var(--text-dim);
  font-size: 11px;
}

#yt-url-input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(var(--accent-h), 50%, 50%, 0.1);
}

/* ===== Playlist Sidebar ===== */
#playlist-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  max-width: 85vw;
  height: 100%;
  z-index: 150;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-right: 1px solid var(--glass-border);
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: 4px 0 30px rgba(0, 0, 0, 0.5);
}

#playlist-sidebar.open {
  transform: translateX(0);
}

.playlist-header {
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.playlist-header h2 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text);
}

.playlist-actions {
  display: flex;
  gap: 4px;
}

.playlist-tracks {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.playlist-tracks::-webkit-scrollbar {
  width: 4px;
}

.playlist-tracks::-webkit-scrollbar-track {
  background: transparent;
}

.playlist-tracks::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

.track-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background var(--transition);
  min-height: 44px;
}

.track-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.track-item.active {
  background: rgba(255, 255, 255, 0.08);
}

.track-item.active .track-name {
  color: var(--accent-glow);
}

.track-num {
  font-size: 11px;
  color: var(--text-dim);
  width: 24px;
  text-align: right;
  flex-shrink: 0;
}

.track-name {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.track-type {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.track-type.local {
  background: rgba(100, 200, 100, 0.15);
  color: rgba(100, 200, 100, 0.8);
}

.track-type.youtube {
  background: rgba(255, 50, 50, 0.15);
  color: rgba(255, 100, 100, 0.8);
}

.track-type.file {
  background: rgba(100, 150, 255, 0.15);
  color: rgba(130, 170, 255, 0.8);
}

/* ===== Playlist Overlay (for mobile) ===== */
#playlist-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 140;
  opacity: 0;
  transition: opacity 0.3s;
}

#playlist-overlay.visible {
  opacity: 1;
}

/* ===== Toast ===== */
#toast {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  z-index: 300;
  padding: 10px 24px;
  background: rgba(20, 20, 30, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
}

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

/* ===== YouTube player (hidden) ===== */
#yt-player-container {
  position: fixed;
  top: -9999px;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ===== Drag & Drop overlay ===== */
/* ===== Ad Overlay ===== */
#ad-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 180;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  pointer-events: none;
}

#ad-overlay.visible {
  display: flex;
}

#ad-overlay .ad-text {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: 8px;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

#ad-overlay .ad-sub {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.3);
  margin-top: 12px;
  letter-spacing: 3px;
}

#drop-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 250;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10, 5, 30, 0.9);
  backdrop-filter: blur(10px);
  border: 3px dashed var(--accent);
}

#drop-overlay.visible {
  display: flex;
}

#drop-overlay .drop-text {
  font-size: clamp(20px, 4vw, 36px);
  font-weight: 600;
  color: var(--accent-glow);
  letter-spacing: 2px;
}

/* ===== Signature ===== */
#signature {
  position: fixed;
  bottom: 72px;
  right: 18px;
  z-index: 50;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.08);
  pointer-events: none;
  transition: color 1s ease;
}

#signature:hover {
  color: rgba(255, 255, 255, 0.2);
}

/* ===== Time display ===== */
.time-display {
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 36px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  #control-bar {
    bottom: 12px;
    left: 10px;
    right: 10px;
    transform: none;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    max-width: none;
  }

  .yt-input-wrap {
    order: 10;
    width: 100%;
    justify-content: center;
  }

  #yt-url-input {
    width: 100%;
    max-width: 300px;
  }

  .volume-wrap input[type="range"] {
    width: 60px;
  }

  #playlist-sidebar {
    width: 100%;
    max-width: 100%;
  }

  #playlist-overlay {
    display: block;
  }

  .mode-btns {
    gap: 0;
  }

  .mode-btn {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .ctrl-sep {
    display: none;
  }

  #song-info .song-name {
    max-width: 70vw;
  }
}

@media (max-width: 480px) {
  .time-display {
    display: none;
  }

  .volume-wrap input[type="range"] {
    width: 50px;
  }
}

/* ===== Scrollbar global ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* ===== File input hidden ===== */
#file-input {
  display: none;
}

/* Keyboard hint */
.kbd-hint {
  font-size: 9px;
  color: var(--text-dim);
  opacity: 0.5;
  position: absolute;
  bottom: 2px;
  right: 4px;
}