/* ========== PLAYER PAGE ========== */

.player-page {
  min-height: 100vh;
  background: var(--bg);
}

/* NAV */
.player-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 32px;
  background: rgba(11, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-tagline {
  font-size: 0.82rem;
  color: var(--fg-muted);
  opacity: 0.7;
}

/* HEADER */
.player-header {
  padding: 72px 24px 56px;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(240,165,0,0.05) 0%, transparent 70%);
}

.player-header-inner {
  max-width: 640px;
  margin: 0 auto;
}

.player-header h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 20px 0 16px;
}

.player-lede {
  font-size: 1rem;
  color: var(--fg-muted);
  font-weight: 300;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
}

/* FILTER BAR */
.filter-bar {
  padding: 0 24px 32px;
}

.filter-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 100px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  color: var(--fg);
  background: rgba(255,255,255,0.08);
}

.filter-btn.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-color: rgba(240,165,0,0.3);
}

/* TRACK GRID */
.tracks-section {
  padding: 0 24px 160px;
}

.tracks-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* TRACK CARD */
.track-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
  cursor: default;
}

.track-card:hover {
  border-color: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

.track-card.playing {
  border-color: rgba(240,165,0,0.35);
  box-shadow: 0 0 0 1px rgba(240,165,0,0.15), 0 8px 32px rgba(240,165,0,0.06);
}

.track-card-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  opacity: 0.5;
}

.track-card.playing .track-card-bg {
  opacity: 1;
}

.track-content {
  position: relative;
  padding: 28px 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 1;
}

.track-icon {
  font-size: 2.2rem;
  line-height: 1;
}

.track-meta {
  flex: 1;
}

.track-category {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

.track-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 6px;
}

.track-desc {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* TRACK CONTROLS */
.track-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.play-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid rgba(240,165,0,0.4);
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.play-btn:hover {
  background: rgba(240,165,0,0.25);
  border-color: var(--accent);
  transform: scale(1.05);
}

.play-btn .pause-icon {
  display: none;
}

.track-card.playing .play-btn .play-icon {
  display: none;
}

.track-card.playing .play-btn .pause-icon {
  display: inline;
}

.track-card.playing .play-btn {
  background: rgba(240,165,0,0.2);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(240,165,0,0.25);
}

.vol-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.vol-icon {
  font-size: 0.9rem;
  opacity: 0.6;
  flex-shrink: 0;
}

.vol-slider {
  flex: 1;
  appearance: none;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.12);
  outline: none;
  cursor: pointer;
}

.vol-slider::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: transform 0.15s;
}

.vol-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.vol-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

.loop-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 6px 8px;
  color: var(--fg-muted);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.loop-btn:hover {
  color: var(--fg);
  border-color: rgba(255,255,255,0.2);
}

.loop-btn.active {
  color: var(--accent);
  border-color: rgba(240,165,0,0.3);
  background: var(--accent-glow);
}

/* VISUALIZER */
.track-visualizer {
  padding: 0 20px 14px;
  position: relative;
  z-index: 1;
}

.viz-canvas {
  width: 100%;
  height: 40px;
  display: block;
  opacity: 0.4;
  transition: opacity 0.3s;
}

.track-card.playing .viz-canvas {
  opacity: 1;
}

/* HIDDEN via filter */
.track-card.hidden {
  display: none;
}

/* NOW PLAYING BAR */
.now-playing-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: rgba(7,10,17,0.96);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(240,165,0,0.15);
  padding: 14px 24px;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.now-playing-bar.visible {
  transform: translateY(0);
}

.np-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.np-info {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.np-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.np-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.np-cat {
  font-size: 0.78rem;
  color: var(--fg-muted);
}

.np-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.np-play-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(240,165,0,0.4);
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}

.np-play-btn:hover {
  background: rgba(240,165,0,0.2);
  border-color: var(--accent);
}

.np-vol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.np-vol input[type="range"] {
  width: 90px;
  appearance: none;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.15);
  outline: none;
  cursor: pointer;
}

.np-vol input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.np-vol input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

/* RESPONSIVE */
@media (max-width: 680px) {
  .tracks-grid {
    grid-template-columns: 1fr;
  }

  .player-header {
    padding: 48px 20px 36px;
  }

  .player-nav {
    padding: 14px 20px;
  }

  .np-vol {
    display: none;
  }

  .track-content {
    padding: 22px 20px 16px;
  }
}

@media (max-width: 480px) {
  .filter-inner {
    gap: 8px;
  }
  .filter-btn {
    font-size: 0.76rem;
    padding: 6px 14px;
  }
}

/* PULSE ANIMATION for playing state */
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(240,165,0,0.3); }
  70% { box-shadow: 0 0 0 8px rgba(240,165,0,0); }
  100% { box-shadow: 0 0 0 0 rgba(240,165,0,0); }
}

.track-card.playing .play-btn {
  animation: pulse-ring 2s infinite;
}