/* Root & Variables */
:root {
  --color-bg: #0f0e0c;
  --color-surface: #1a1814;
  --color-surface-light: #2a2620;
  --color-accent: #d4a574;
  --color-accent-dark: #9d7d54;
  --color-text: #f5f1ed;
  --color-text-secondary: #b8b0a8;
  --color-text-muted: #7a7268;
  --color-border: #3a3530;

  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s ease-out;
}

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.3px;
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

/* Header */
.app-header {
  background: linear-gradient(135deg, var(--color-surface) 0%, #252019 100%);
  border-bottom: 2px solid var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  flex-shrink: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.app-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.5;
}

.header-content {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.header-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-start;
}

.app-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-accent);
  position: relative;
}

.app-title::after {
  content: '♪';
  margin-left: 8px;
  font-size: 1.2rem;
  animation: samba-bounce 1.2s ease-in-out infinite;
}

@keyframes samba-bounce {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  50% {
    transform: translateY(-4px) rotate(15deg);
    opacity: 0.8;
  }
}

.app-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.header-stats {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.music-count,
.header-stats span {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
  background: rgba(212, 165, 116, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-accent);
}

.btn-3d {
  color: rgba(212, 165, 116, 0.6);
  background: rgba(212, 165, 116, 0.08);
  border: 1px solid rgba(212, 165, 116, 0.3);
  padding: 4px 8px;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  flex-shrink: 0;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.btn-3d:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: rgba(212, 165, 116, 0.15);
}

/* Layout */
.app-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  gap: 1px;
  background: var(--color-border);
}

/* Main Content (Center - Albums Grid) */
.main-content {
  flex: 1;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* Tracks Panel (Right - Smaller) */
.tracks-panel {
  width: 380px;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: relative;
  transition: width 0.3s ease;
}

.tracks-panel.hidden {
  width: 0;
  border-left: none;
  overflow: hidden;
}

.filters-section {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  background: linear-gradient(180deg, rgba(212, 165, 116, 0.08) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.search-input {
  width: 100%;
  padding: 8px 100px 8px 12px;
  background: var(--color-surface-light);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-input:focus,
.search-input:focus-visible {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg);
  box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.2);
}

.search-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.search-wrapper {
  position: relative;
}


.search-clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.8rem;
  line-height: 1;
  padding: 4px;
  display: none;
  border-radius: 50%;
  transition: var(--transition-fast);
  align-items: center;
  justify-content: center;
}

.search-clear.visible {
  display: flex;
}

.search-clear:hover {
  color: var(--color-text);
  background: var(--color-surface-light);
}

.search-count {
  position: absolute;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.68rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  pointer-events: none;
  display: none;
}

.search-count.visible {
  display: block;
}

.decade-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: 100%;
  align-items: center;
  justify-content: center;
}

.decade-btn {
  padding: 6px 10px;
  background: var(--color-surface-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  border-radius: 4px;
  font-size: 0.9375em;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.decade-btn:hover {
  background: var(--color-surface);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.decade-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(212, 165, 116, 0.3);
}

.decade-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.decade-btn--globe {
  background: #1a2535;
  border-color: #2a4a7f;
  color: #7aadff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  text-decoration: none;
}
.decade-btn--globe:hover {
  background: #1e2e45;
  border-color: #4a8adf;
  color: #a8ccff;
  transform: translateY(-2px);
}

.albums-grid {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

.albums-grid-inner {
  position: relative;
}

#empty-state {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  height: 220px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

#empty-state:not([hidden]) {
  display: flex;
}

#empty-state button {
  padding: 6px 14px;
  background: var(--color-surface-light);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

#empty-state button:hover {
  color: var(--color-text);
  border-color: var(--color-accent-dark);
}

#toast {
  position: fixed;
  bottom: calc(90px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  background: var(--color-surface-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.82rem;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 9999;
  max-width: 280px;
}

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

.album-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  cursor: pointer;
  align-items: stretch;
  position: relative;
  contain: content;
}

.album-item:hover .album-cover-thumb {
  box-shadow: 0 16px 40px rgba(212, 165, 116, 0.3), 0 0 20px rgba(212, 165, 116, 0.15);
  transform: scale(1.04);
}

.album-item:hover .album-item-info {
  opacity: 1;
}

.album-item.active {
  animation: samba-pulse 1.5s ease-in-out infinite;
}

@keyframes samba-pulse {
  0%, 100% {
    filter: drop-shadow(0 0 0 rgba(212, 165, 116, 0));
  }
  50% {
    filter: drop-shadow(0 0 8px rgba(212, 165, 116, 0.2));
  }
}

.album-item.active .album-cover-thumb {
  box-shadow: 0 0 0 3px var(--color-accent), 0 16px 40px rgba(212, 165, 116, 0.4);
  transform: scale(1.06);
}

.album-item.active .album-item-title {
  color: var(--color-accent);
  font-weight: 700;
}

.album-cover-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 8px;
  background: var(--color-surface-light);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  transition: var(--transition);
}

.album-item-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 0;
}

.album-item-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.album-item-meta {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: var(--transition-fast);
}

.album-header {
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  flex-shrink: 0;
  overflow-y: auto;
}

.album-header.empty {
  display: none;
}

.album-cover-large {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--color-surface-light);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.album-header-info {
  text-align: center;
  width: 100%;
}

.album-header-info h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
  line-height: 1.3;
}

.album-header-info p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 2px;
}

.year-link,
.artist-link {
  cursor: pointer;
}

.year-link:hover,
.artist-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.artist-link:focus-visible,
.year-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.album-item:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 8px;
}

.track-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  list-style: none;
  padding: 0;
  margin: 0;
}

.track-item {
  display: flex;
  align-items: center;
  padding: 7px 16px;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition-fast);
  gap: var(--spacing-md);
  contain: content;
}

.track-item:hover,
.track-item:focus-visible {
  background: var(--color-surface-light);
  outline: none;
}

.track-item:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.track-item.playing {
  background: rgba(212, 165, 116, 0.15);
}

.track-item.playing .track-num::before {
  content: '▶';
  color: var(--color-accent);
  margin-right: 4px;
  font-size: 0.7rem;
}

.track-num {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  min-width: 20px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.track-item.playing .track-num {
  color: var(--color-accent);
}

.track-details {
  flex: 1;
  min-width: 0;
}

.track-title {
  font-size: 0.8rem;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
  line-height: 1.3;
}

.track-item.playing .track-title {
  color: var(--color-accent);
  font-weight: 500;
}

.track-artist {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.track-artist.artist-link {
  cursor: pointer;
}

.track-artist.artist-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.track-duration {
  color: var(--color-text-muted);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
  min-width: 32px;
}

/* Player Bar (Sticky Bottom) */
.player-bar {
  background: var(--color-surface);
  border-top: 2px solid var(--color-accent);
  padding: 8px var(--spacing-lg);
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  flex-shrink: 0;
  z-index: 200;
  backdrop-filter: blur(10px);
  position: relative;
}

.player-bar::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.3;
}

.player-content {
  max-width: 1600px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 2fr minmax(0, 1fr);
  gap: var(--spacing-lg);
  align-items: center;
}

.now-playing-compact {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  min-width: 250px;
  flex-shrink: 0;
}

.player-cover {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--color-surface-light);
  flex-shrink: 0;
  display: block;
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.player-cover.placeholder {
  object-fit: contain;
  padding: 4px;
  background: var(--color-surface);
}

.player-info {
  flex: 1;
  min-width: 0;
}

.player-info h3 {
  font-size: 0.9rem;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  font-weight: 500;
}

.player-info p {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.player-controls {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}

.controls-buttons {
  display: flex;
  gap: 4px;
  align-items: center;
  flex-shrink: 0;
}

.btn {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 1rem;
  cursor: pointer;
  padding: 6px;
  transition: var(--transition-fast);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn:hover {
  color: var(--color-text);
  background: var(--color-surface-light);
  transform: scale(1.1);
}

.btn:active {
  transform: scale(0.95);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-play {
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-bg);
  border-radius: 50%;
  width: 36px;
  height: 36px;
}

.icon-play, .icon-pause { display: flex; pointer-events: none; }
.btn-play .icon-pause { display: none; }
.btn-play.playing .icon-play { display: none; }
.btn-play.playing .icon-pause { display: flex; }
.btn-play.loading .icon-play,
.btn-play.loading .icon-pause { display: none; }
.btn-play.loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0,0,0,0.25);
  border-top-color: var(--color-bg);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  pointer-events: none;
}
.overlay-btn-play.loading::after {
  width: 20px;
  height: 20px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.btn-play.autoplay-blocked {
  animation: autoplay-pulse 1s ease-in-out infinite;
}
@keyframes autoplay-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 165, 116, 0.6); }
  50%       { box-shadow: 0 0 0 6px rgba(212, 165, 116, 0); }
}

@keyframes marquee-scroll {
  0%   { transform: translateX(0); }
  10%  { transform: translateX(0); }
  85%  { transform: translateX(var(--marquee-distance)); }
  95%  { transform: translateX(var(--marquee-distance)); }
  100% { transform: translateX(0); }
}

.marquee-active {
  overflow: hidden;
  text-overflow: clip;
}

.marquee-active .marquee-inner {
  display: inline-block;
  white-space: nowrap;
  animation: marquee-scroll var(--marquee-duration, 12s) linear infinite;
  animation-delay: 1.5s;
}

@media (prefers-reduced-motion: reduce) {
  .marquee-active .marquee-inner { animation: none; }
}

.btn-play:hover {
  background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%);
  color: var(--color-bg);
  box-shadow: 0 4px 16px rgba(212, 165, 116, 0.3);
}

.btn-play.playing {
  background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%);
}

/* Progress Bar */
.progress-container {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 35px;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  transition: height 0.1s ease;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: -12px;
  bottom: -12px;
  left: 0;
  right: 0;
}

.progress-bar:hover {
  height: 6px;
}

.progress-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.15s, transform 0.15s;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

.progress-bar.has-progress .progress-fill::after {
  opacity: 1;
}

.progress-bar:hover .progress-fill::after {
  transform: translateY(-50%) scale(1.25);
}

/* Library Stats / Player Extra Controls */
.library-stats {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  justify-self: end;
  padding-left: var(--spacing-lg);
  border-left: 1px solid var(--color-border);
}

.btn-extra {
  color: var(--color-text-muted);
  background: none;
  border: none;
  padding: 6px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.btn-extra:hover {
  color: var(--color-text);
}

.btn-extra.active {
  color: var(--color-accent);
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
  color: var(--color-text-muted);
}

.volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 3px;
  border-radius: 2px;
  background: var(--color-border);
  outline: none;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
}

/* Loading Skeleton */
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.grid-skeleton {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 24px;
  padding: 24px;
  z-index: 1;
  background: var(--color-bg);
  pointer-events: none;
  overflow: hidden;
}

.skeleton-card {
  aspect-ratio: 1;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--color-surface-light) 25%, var(--color-border) 50%, var(--color-surface-light) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
}

/* Mobile Now Playing Overlay */
.now-playing-overlay {
  display: none;
}

/* Audio Element */
audio {
  display: none;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .tracks-panel {
    width: 320px;
  }

  .album-cover-large {
    width: 140px;
    height: 140px;
  }

  .album-header {
    padding: var(--spacing-md);
  }

  .album-header-info h2 {
    font-size: 1.3rem;
  }
}


/* Mobile-only elements hidden by default on desktop */
.mobile-only { display: none; }
.mobile-track-drawer { display: none; }

@media (max-width: 768px) {
  /* Header: compact single row ~44px */
  .app-header {
    padding: 0 var(--spacing-sm);
    height: 44px;
    display: flex;
    align-items: center;
  }

  .header-content {
    flex-direction: row;
    align-items: center;
    gap: 0;
    width: 100%;
  }

  .header-title {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xs);
  }

  .app-title {
    font-size: 1.1rem;
  }

  .app-subtitle {
    display: none;
  }

  .header-stats {
    margin-left: auto;
    gap: 4px;
  }

  .music-count,
  .header-stats span {
    font-size: 0.68rem;
    padding: 2px 7px;
  }

  .music-count {
    display: none;
  }

  /* Layout: album grid takes all available height */
  .app-layout {
    flex-direction: column;
    gap: 0;
    flex: 1;
    overflow: hidden;
  }

  .main-content {
    flex: 1;
    height: auto;
    border-bottom: none;
    overflow: hidden;
  }

  /* Tracks panel: completely hidden on mobile */
  .tracks-panel {
    display: none !important;
  }

  /* Player bar: compact two-row layout */
  .player-bar {
    padding: 10px var(--spacing-sm) 0;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    flex-shrink: 0;
  }

  .player-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
    justify-items: center;
    padding: 0;
    height: auto;
    align-items: center;
  }

  .now-playing-compact {
    display: none;
  }

  .player-controls {
    justify-content: center;
    flex-direction: column;
    gap: 2px;
    width: 100%;
    align-items: center;
    min-width: 0;
  }

  .player-cover {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
  }

  .player-info h3 {
    font-size: 0.8rem;
  }

  .player-info p {
    font-size: 0.7rem;
  }

  .controls-buttons {
    position: relative;
    width: 100%;
    justify-content: center;
    gap: 4px;
  }

  .btn {
    font-size: 1rem;
    padding: 6px;
  }

  /* Library stats: hidden on mobile */
  .library-stats {
    display: none;
  }

  /* Decade buttons: single scrollable row */
  .decade-btn {
    padding: 4px 8px;
    font-size: 0.78rem;
  }

  .decade-buttons {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    justify-content: flex-start;
    gap: 4px;
  }

  .decade-buttons::-webkit-scrollbar {
    display: none;
  }

  .filters-section {
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-bottom: 6px;
    gap: 0;
  }

  /* Tracklist toggle button: visible on mobile */
  .mobile-only {
    display: flex;
  }

  #btn-shuffle-mobile {
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
    background: none;
    border: none;
    font-size: 1.1rem;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
  }

  #btn-shuffle-mobile.active {
    color: var(--color-accent);
  }

  #btn-tracklist {
    position: absolute;
    right: 0;
    color: var(--color-accent);
    background: none;
    border: none;
    font-size: 1.1rem;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    line-height: 1;
  }

  /* Mobile slide-up drawer */
  .mobile-track-drawer {
    display: flex;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, border-top-color 0.3s ease;
    background: var(--color-surface);
    border-top: 1px solid transparent;
  }

  .mobile-track-drawer.open {
    border-top-color: var(--color-border);
    max-height: 65dvh;
  }

  .drawer-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    background: var(--color-surface-light);
  }

  .drawer-cover {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
    background: var(--color-bg);
  }

  .drawer-album-info {
    flex: 1;
    min-width: 0;
  }

  .drawer-album-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .drawer-album-meta {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .drawer-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    flex-shrink: 0;
    transition: var(--transition-fast);
    line-height: 1;
  }

  .drawer-close:hover {
    color: var(--color-text);
  }

  .drawer-track-list {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex: 1;
  }

  .drawer-track-list .track-item {
    padding: 10px var(--spacing-sm);
  }

  .now-playing-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: fixed;
    inset: 0;
    z-index: 500;
    background: linear-gradient(180deg, var(--color-surface-light) 0%, var(--color-bg) 60%);
    padding: env(safe-area-inset-top, 0) 28px 32px;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
  }

  .now-playing-overlay.open {
    transform: translateY(0);
  }

  .overlay-header {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    padding: 14px 0 6px;
    flex-shrink: 0;
  }

  .overlay-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 6px;
    transition: var(--transition-fast);
    line-height: 1;
  }

  .overlay-close:hover { color: var(--color-text); }

  .overlay-cover {
    width: min(72vw, 280px);
    height: min(72vw, 280px);
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
    margin: 12px 0 24px;
    flex-shrink: 0;
  }

  .overlay-info {
    text-align: center;
    width: 100%;
    margin-bottom: 24px;
    flex-shrink: 0;
  }

  .overlay-track-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 5px;
  }

  .overlay-track-artist {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .overlay-progress-wrap {
    width: 100%;
    margin-bottom: 28px;
    flex-shrink: 0;
  }

  #overlay-progress-bar {
    height: 4px;
    cursor: pointer;
  }

  .overlay-times {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.72rem;
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
  }

  .overlay-controls {
    display: flex;
    gap: 32px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .overlay-controls .btn-control {
    color: var(--color-text-secondary);
    font-size: 1.4rem;
    padding: 8px;
  }

  .overlay-controls .btn-control:hover { color: var(--color-text); }

  .overlay-btn-play {
    width: 60px;
    height: 60px;
  }

  .grid-skeleton {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    padding: 8px;
  }

}

@media (max-width: 480px) {
  .album-item-title {
    font-size: 0.68rem;
  }

  .album-item-meta {
    font-size: 0.6rem;
  }

  .decade-buttons {
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 4px;
    margin-top: 7px;
  }

  .decade-btn {
    padding: 5px 8px;
    font-size: 0.78rem;
  }

  .grid-skeleton {
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 6px;
    padding: 6px;
  }
}