/* ============================================================
   Creative Spxce Music — Retro Anime Cyberpunk Theme
   Color Palette: Deep space bg · Neon purple · Electric blue
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-void:        #04020f;
  --bg-deep:        #080518;
  --bg-card:        #0d0a22;
  --bg-card-alt:    #110e2a;

  --purple-bright:  #bf5fff;
  --purple-mid:     #8a2be2;
  --purple-dark:    #3b0f6e;
  --blue-bright:    #00d4ff;
  --blue-mid:       #0090cc;
  --blue-dark:      #003a55;

  --text-primary:   #e8d5ff;
  --text-secondary: #7a6899;
  --text-dim:       #3d2e5c;

  --glow-purple:    0 0 8px #bf5fff, 0 0 20px #8a2be288, 0 0 40px #3b0f6e55;
  --glow-blue:      0 0 8px #00d4ff, 0 0 20px #0090cc88, 0 0 40px #003a5555;
  --glow-text-p:    0 0 6px #bf5fff, 0 0 12px #8a2be2;
  --glow-text-b:    0 0 6px #00d4ff, 0 0 12px #0090cc;

  --border-purple:  1px solid #8a2be266;
  --border-blue:    1px solid #00d4ff44;
  --border-bright:  1px solid #bf5fff88;

  --font-display:   'Orbitron', sans-serif;
  --font-mono:      'Share Tech Mono', monospace;

  --radius-card:    6px;
  --transition:     0.2s ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Base ───────────────────────────────────────────────────── */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Galaxy Background Canvas ───────────────────────────────── */
#galaxy-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.72;
}

/* ── Background Grid ────────────────────────────────────────── */
#bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(138, 43, 226, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 43, 226, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Perspective vanishing-point effect on the grid */
#bg-grid::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 100%,
    transparent 40%, var(--bg-void) 100%);
}

/* ── Scanlines overlay ──────────────────────────────────────── */
#scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0.18) 4px
  );
  pointer-events: none;
  z-index: 1;
  animation: scanroll 12s linear infinite;
}

@keyframes scanroll {
  from { background-position: 0 0; }
  to   { background-position: 0 200px; }
}

/* ── App wrapper ────────────────────────────────────────────── */
#app {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 48px;
  min-height: 100vh;
}

/* ── Site Header ────────────────────────────────────────────── */
#site-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 28px;
  user-select: none;
}

.header-bracket {
  color: var(--blue-bright);
  text-shadow: var(--glow-text-b);
  font-size: 1.4rem;
}

.header-title {
  color: var(--text-primary);
  text-shadow: var(--glow-text-p);
}

.header-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: #39ff14;
  text-shadow: 0 0 6px #39ff14;
  letter-spacing: 0.1em;
  margin-left: 10px;
  animation: status-blink 3s ease-in-out infinite;
}

@keyframes status-blink {
  0%, 90%, 100% { opacity: 1; }
  95%           { opacity: 0.2; }
}

/* ── Visualizer ─────────────────────────────────────────────── */
#visualizer-wrap {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin-bottom: 6px;
}

#visualizer {
  display: block;
  width: 100%;
  height: 90px;
  border: var(--border-blue);
  border-bottom: none;
  background: transparent;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
}

.vis-label {
  position: absolute;
  top: 6px;
  right: 10px;
  font-size: 0.6rem;
  color: var(--blue-mid);
  letter-spacing: 0.12em;
  opacity: 0.7;
}

/* ── Player Card ────────────────────────────────────────────── */
#player {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: linear-gradient(160deg, var(--bg-card) 0%, var(--bg-card-alt) 100%);
  border: var(--border-blue);
  border-top: 2px solid var(--blue-bright);
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  padding: 28px 28px 24px;
  box-shadow:
    0 0 0 1px var(--purple-dark),
    var(--glow-blue),
    0 24px 60px rgba(0, 0, 0, 0.7);
  margin-bottom: 4px;
}

/* Corner decorations */
.corner {
  position: absolute;
  width: 14px;
  height: 14px;
}

.corner.tl { top: -1px;  left: -1px;  border-top: 2px solid var(--purple-bright); border-left: 2px solid var(--purple-bright); }
.corner.tr { top: -1px;  right: -1px; border-top: 2px solid var(--purple-bright); border-right: 2px solid var(--purple-bright); }
.corner.bl { bottom: -1px; left: -1px;  border-bottom: 2px solid var(--purple-bright); border-left: 2px solid var(--purple-bright); }
.corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--purple-bright); border-right: 2px solid var(--purple-bright); }

/* ── Album Art ──────────────────────────────────────────────── */
#album-art {
  display: flex;
  justify-content: center;
  margin-bottom: 22px;
}

#album-art-inner {
  position: relative;
  width: 160px;
  height: 160px;
  border-radius: 4px;
  overflow: hidden;
  border: var(--border-bright);
  box-shadow: var(--glow-purple), 0 8px 24px rgba(0,0,0,0.6);
  flex-shrink: 0;
}

#cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background-color: var(--bg-deep);
  /* Placeholder when no cover loaded */
  background-image:
    linear-gradient(135deg, var(--purple-dark) 0%, var(--blue-dark) 100%);
}

/* Empty cover placeholder */
#cover[src=""] {
  background: linear-gradient(135deg, var(--purple-dark) 0%, var(--blue-dark) 100%);
}

/* Holographic shimmer overlay on album art */
#album-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(191, 95, 255, 0.08) 0%,
    transparent 40%,
    rgba(0, 212, 255, 0.08) 100%
  );
  pointer-events: none;
}

/* ── Track Info ─────────────────────────────────────────────── */
#track-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  margin-bottom: 20px;
  overflow: hidden;
}

#track-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-shadow: var(--glow-text-p);
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

#track-artist {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--blue-bright);
  text-shadow: var(--glow-text-b);
  text-transform: uppercase;
}

/* ── Preview Notice ─────────────────────────────────────────── */
#preview-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  margin-bottom: 18px;
  background: rgba(191, 95, 255, 0.06);
  border: 1px solid rgba(191, 95, 255, 0.3);
  border-radius: 4px;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

#preview-notice a {
  font-family: var(--font-display);
  font-size: 0.52rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--blue-bright);
  border: 1px solid var(--blue-mid);
  border-radius: 3px;
  padding: 3px 7px;
  background: rgba(0, 212, 255, 0.06);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition),
              border-color var(--transition), box-shadow var(--transition);
}

#preview-notice a:hover {
  color: var(--bg-void);
  background: var(--blue-bright);
  border-color: var(--blue-bright);
  box-shadow: var(--glow-blue);
}

/* ── Progress Bar ───────────────────────────────────────────── */
#progress-container {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

#current-time,
#duration {
  font-size: 0.65rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  min-width: 32px;
}

#duration { text-align: right; }

/* ── Range Inputs (shared) ──────────────────────────────────── */
.range-wrap {
  flex: 1;
  position: relative;
  height: 20px;
  display: flex;
  align-items: center;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--text-dim);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
}

/* Track fill color via accent-color for Webkit fallback */
input[type="range"]::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(
    to right,
    var(--purple-bright) 0%,
    var(--blue-bright) 100%
  );
  /* The filled portion is handled in JS via --val custom property */
}

/* Override with JS-driven fill */
input[type="range"].has-fill::-webkit-slider-runnable-track {
  background: linear-gradient(
    to right,
    var(--blue-bright) 0%,
    var(--blue-bright) var(--fill, 0%),
    var(--text-dim) var(--fill, 0%),
    var(--text-dim) 100%
  );
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--purple-bright);
  box-shadow: var(--glow-purple);
  border: 2px solid var(--bg-void);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--purple-bright), 0 0 20px var(--purple-mid);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--purple-bright);
  box-shadow: var(--glow-purple);
  border: 2px solid var(--bg-void);
  cursor: pointer;
}

input[type="range"]::-moz-range-track {
  height: 3px;
  border-radius: 2px;
  background: var(--text-dim);
}

input[type="range"]::-moz-range-progress {
  background: var(--blue-bright);
  height: 3px;
  border-radius: 2px;
}

/* ── Control Buttons ────────────────────────────────────────── */
#controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

#controls button {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: var(--border-purple);
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  padding: 8px;
}

#controls button svg {
  width: 18px;
  height: 18px;
  display: block;
  pointer-events: none;
}

/* Smaller icons for shuffle/repeat */
#btn-shuffle svg,
#btn-repeat svg {
  width: 15px;
  height: 15px;
}

#controls button:hover {
  color: var(--purple-bright);
  border-color: var(--purple-bright);
  box-shadow: var(--glow-purple);
  transform: translateY(-1px);
}

/* Play button — larger + glowing */
#btn-play {
  width: 54px;
  height: 54px;
  border-radius: 50% !important;
  border: 2px solid var(--blue-bright) !important;
  color: var(--blue-bright) !important;
  box-shadow: var(--glow-blue) !important;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%) !important;
  position: relative;
}

#btn-play:hover {
  background: radial-gradient(circle, rgba(0, 212, 255, 0.18) 0%, transparent 70%) !important;
  box-shadow: 0 0 14px var(--blue-bright), 0 0 28px var(--blue-mid), 0 0 50px var(--blue-dark) !important;
  transform: scale(1.06) translateY(0px) !important;
}

#btn-play svg {
  width: 20px !important;
  height: 20px !important;
}

#btn-play #icon-play { margin-left: 2px; }

/* Active states for toggle buttons */
#btn-shuffle.active,
#btn-repeat.active {
  color: var(--purple-bright);
  border-color: var(--purple-bright);
  box-shadow: var(--glow-purple);
}

.hidden { display: none !important; }

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

#volume-container {
  justify-content: center;
}

#volume-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  display: block;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition);
}

#volume-icon:hover { color: var(--blue-bright); }

#volume-container .range-wrap {
  width: 140px;
  flex: none;
}

/* ── Playlist ───────────────────────────────────────────────── */
#playlist {
  width: 100%;
  max-width: 520px;
  background: var(--bg-card);
  border: var(--border-blue);
  border-top: none;
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}

#playlist-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px 9px;
  border-bottom: 1px solid var(--purple-dark);
  background: linear-gradient(90deg, rgba(138,43,226,0.1) 0%, transparent 100%);
}

.playlist-label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--purple-bright);
  text-shadow: 0 0 6px var(--purple-bright);
}

.playlist-count {
  font-size: 0.58rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

#playlist-items {
  list-style: none;
  max-height: 280px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--purple-mid) var(--bg-deep);
}

/* Custom scrollbar (webkit) */
#playlist-items::-webkit-scrollbar {
  width: 4px;
}
#playlist-items::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
#playlist-items::-webkit-scrollbar-thumb {
  background: var(--purple-mid);
  border-radius: 2px;
  box-shadow: var(--glow-purple);
}

/* ── Album Group ─────────────────────────────────────────────── */
.album-group {
  list-style: none;
  border-bottom: 1px solid rgba(59, 15, 110, 0.5);
}

.album-group:last-child { border-bottom: none; }

/* ── Album Row (clickable header) ────────────────────────────── */
.album-row {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 12px 16px;
  cursor: pointer;
  position: relative;
  transition: background var(--transition);
  user-select: none;
}

.album-row::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.album-row:hover {
  background: rgba(138, 43, 226, 0.1);
}

.album-row:hover::before {
  background: var(--purple-bright);
  box-shadow: var(--glow-purple);
}

.album-group.open .album-row {
  background: linear-gradient(90deg, rgba(191, 95, 255, 0.08) 0%, transparent 100%);
}

.album-group.open .album-row::before {
  background: var(--purple-bright);
  box-shadow: var(--glow-purple);
}

/* ── Album Cover ─────────────────────────────────────────────── */
.album-cover {
  width: 46px;
  height: 46px;
  border-radius: 3px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--purple-dark);
  background-color: var(--bg-deep);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.album-cover-empty {
  background: linear-gradient(135deg, var(--purple-dark) 0%, var(--blue-dark) 100%);
}

.album-group.open .album-cover {
  border-color: var(--purple-bright);
  box-shadow: var(--glow-purple);
}

/* ── Album Info ──────────────────────────────────────────────── */
.album-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.album-name {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  color: var(--text-primary);
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition), text-shadow var(--transition);
}

.album-group.open .album-name {
  color: var(--purple-bright);
  text-shadow: var(--glow-text-p);
}

.album-track-count {
  font-size: 0.58rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

/* ── Buy Button ──────────────────────────────────────────────── */
.album-buy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  font-family: var(--font-display);
  font-size: 0.52rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--blue-bright);
  border: 1px solid var(--blue-mid);
  border-radius: 3px;
  background: rgba(0, 212, 255, 0.06);
  box-shadow: 0 0 6px rgba(0, 212, 255, 0.15);
  flex-shrink: 0;
  white-space: nowrap;
  transition: color var(--transition), background var(--transition),
              border-color var(--transition), box-shadow var(--transition);
}

.album-buy-btn svg {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
}

.album-buy-btn:hover {
  color: var(--bg-void);
  background: var(--blue-bright);
  border-color: var(--blue-bright);
  box-shadow: var(--glow-blue);
}

/* ── Expand Arrow ────────────────────────────────────────────── */
.album-arrow {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-dim);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), color var(--transition);
}

.album-arrow svg {
  width: 100%;
  height: 100%;
  display: block;
}

.album-group.open .album-arrow {
  transform: rotate(90deg);
  color: var(--purple-bright);
}

/* ── Collapsible Track List ──────────────────────────────────── */
.album-tracks {
  list-style: none;
  height: 0;
  overflow: hidden;
  transition: height 0.38s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(0, 0, 0, 0.2);
}

/* ── Individual Track Item ───────────────────────────────────── */
.track-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 16px 10px 24px;
  border-bottom: 1px solid rgba(59, 15, 110, 0.3);
  cursor: pointer;
  position: relative;
  opacity: 1;
  transform: translateX(0);
  transition:
    background var(--transition),
    opacity 0.28s ease,
    transform 0.28s ease;
}

.track-item:last-child { border-bottom: none; }

.track-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.track-item:hover {
  background: rgba(0, 212, 255, 0.06);
}

.track-item:hover::before {
  background: var(--blue-bright);
  box-shadow: var(--glow-blue);
}

.track-item.active {
  background: linear-gradient(90deg, rgba(0, 212, 255, 0.1) 0%, rgba(138, 43, 226, 0.05) 100%);
}

.track-item.active::before {
  background: var(--blue-bright);
  box-shadow: var(--glow-blue);
}

/* ── EQ Bars (active track indicator) ───────────────────────── */
.track-eq {
  display: none;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
  min-width: 14px;
  flex-shrink: 0;
}

.track-item.active .track-eq { display: flex; }
.track-item.active .track-num { display: none; }

.track-eq span {
  display: block;
  width: 2px;
  background: var(--blue-bright);
  box-shadow: 0 0 4px var(--blue-bright);
  border-radius: 1px;
  animation: eq-bar 0.8s ease-in-out infinite alternate;
}

.track-eq span:nth-child(1) { height: 6px;  animation-delay: 0.00s; }
.track-eq span:nth-child(2) { height: 12px; animation-delay: 0.15s; }
.track-eq span:nth-child(3) { height: 8px;  animation-delay: 0.05s; }

@keyframes eq-bar {
  from { transform: scaleY(0.3); }
  to   { transform: scaleY(1.0); }
}

/* ── Track Number ────────────────────────────────────────────── */
.track-num {
  font-size: 0.6rem;
  color: var(--text-dim);
  min-width: 18px;
  text-align: center;
  flex-shrink: 0;
  letter-spacing: 0.05em;
}

/* ── Track Meta ──────────────────────────────────────────────── */
.track-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.track-title {
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition), text-shadow var(--transition);
}

.track-item.active .track-title {
  color: var(--blue-bright);
  text-shadow: var(--glow-text-b);
}

.track-artist {
  font-size: 0.6rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Track Duration ──────────────────────────────────────────── */
.track-dur {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.track-item.active .track-dur {
  color: var(--purple-bright);
}


/* ── Accent utility ──────────────────────────────────────────── */
.accent {
  color: var(--purple-bright);
  text-shadow: var(--glow-text-p);
}

/* ── Flicker animation for neon elements ─────────────────────── */
@keyframes neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% { opacity: 1; }
  20%, 24%, 55%                           { opacity: 0.7; }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 560px) {
  #player {
    padding: 22px 18px 18px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  #visualizer {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  #playlist {
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  #album-art-inner {
    width: 130px;
    height: 130px;
  }

  #btn-play {
    width: 48px;
    height: 48px;
  }

  #volume-container .range-wrap {
    width: 90px;
  }
}