/* ===== R2 Music - Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root,
[data-theme="light"] {
  --bg-primary: #f4f3fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eae8f4;
  --bg-card: #ffffff;
  --bg-hover: #f0eef8;
  --bg-active: #e5e3f0;
  --text-primary: #1a1a2e;
  --text-secondary: #6b6b85;
  --text-muted: #9999b0;
  --accent: #7c5cfc;
  --accent-hover: #6a48e8;
  --accent-glow: rgba(124, 92, 252, 0.12);
  --border: #e0dfec;
  --border-light: #d2d0e2;
  --success: #22c55e;
  --warning: #eab308;
  --danger: #ef4444;
  --gradient-1: linear-gradient(135deg, #7c5cfc 0%, #c084fc 100%);
  --gradient-2: linear-gradient(135deg, #f4f3fa 0%, #eae8f4 100%);
  --player-height: 90px;
  --sidebar-width: 240px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(100, 80, 160, 0.08);
  --transition: all 0.2s ease;
}

[data-theme="dark"] {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a28;
  --bg-card: #16161f;
  --bg-hover: #1f1f2e;
  --bg-active: #252538;
  --text-primary: #e8e8f0;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent: #7c5cfc;
  --accent-hover: #9478ff;
  --accent-glow: rgba(124, 92, 252, 0.25);
  --border: #222235;
  --border-light: #2a2a40;
  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --gradient-1: linear-gradient(135deg, #7c5cfc 0%, #c084fc 100%);
  --gradient-2: linear-gradient(135deg, #0a0a0f 0%, #1a1a28 100%);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

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

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== Login Page ===== */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}
.login-wrapper::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 20%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%; max-width: 400px;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
}
.login-card h1 {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.login-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.btn-primary {
  width: 100%;
  padding: 12px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.login-error {
  color: var(--danger);
  font-size: 13px;
  text-align: center;
  margin-top: 16px;
  min-height: 20px;
}

/* ===== App Layout ===== */
#app {
  display: flex;
  height: 100vh;
  flex-direction: column;
}
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo h2 {
  font-size: 20px;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sidebar-logo span {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  display: block;
}
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}
.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 12px 8px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 450;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-hover);
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}
.sidebar-footer .btn-logout {
  width: 100%;
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}
.sidebar-footer .btn-logout:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
  padding-bottom: calc(var(--player-height) + 32px);
}
.page-header {
  margin-bottom: 28px;
}
.page-header h1 {
  font-size: 28px;
  font-weight: 700;
}
.page-header p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ===== Songs Table ===== */
.songs-table {
  width: 100%;
  border-collapse: collapse;
}
.songs-table thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
}
.songs-table tbody tr {
  cursor: pointer;
  transition: var(--transition);
}
.songs-table tbody tr:hover {
  background: var(--bg-hover);
}
.songs-table tbody tr.playing {
  background: var(--accent-glow);
}
.songs-table tbody td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}
.songs-table .song-title-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}
.songs-table .song-index {
  color: var(--text-muted);
  font-size: 13px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}
.songs-table .song-title {
  font-weight: 500;
}
.songs-table .song-album-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}
.songs-table .song-album-link:hover {
  color: var(--accent);
  text-decoration: underline;
}
.songs-table .song-duration {
  color: var(--text-secondary);
  font-size: 13px;
}

/* ===== Albums Grid ===== */
.albums-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 24px;
}
.album-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.album-card:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.album-cover {
  width: 100%;
  aspect-ratio: 1;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.album-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.album-cover .placeholder-icon {
  color: var(--text-muted);
  font-size: 48px;
}
.album-cover .play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.album-card:hover .play-overlay { opacity: 1; }
.play-overlay svg { width: 40px; height: 40px; color: white; }

.album-card-title {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.album-card-artist {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.album-card-count {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== Album Detail ===== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 24px;
  transition: var(--transition);
}
.back-link:hover {
  color: var(--accent);
}

.album-detail-header {
  display: flex;
  gap: 32px;
  margin-bottom: 32px;
  align-items: flex-end;
}
.album-detail-cover {
  width: 220px; height: 220px;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}
.album-detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.album-detail-cover .placeholder-icon { font-size: 80px; color: var(--text-muted); }
.album-detail-info h1 { font-size: 36px; font-weight: 700; margin-bottom: 8px; }
.album-detail-info .artist { color: var(--text-secondary); font-size: 16px; margin-bottom: 4px; }
.album-detail-info .meta { color: var(--text-muted); font-size: 13px; }
.btn-play-all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 10px 24px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}
.btn-play-all:hover { opacity: 0.9; transform: scale(1.02); }

/* ===== Stats Page ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-1);
}
.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}
.stat-card .stat-value {
  font-size: 40px;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card .stat-icon {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 48px;
  opacity: 0.08;
}

/* ===== Sync Section ===== */
.sync-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 32px;
}
.sync-section h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.sync-section p {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 16px;
}
.btn-sync {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}
.btn-sync:hover { border-color: var(--accent); color: var(--accent); }
.btn-sync:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sync.syncing { color: var(--warning); border-color: var(--warning); }
.sync-progress {
  margin-top: 16px;
  display: none;
}
.sync-progress.show { display: block; }
.sync-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
}
.sync-progress-bar .fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.sync-progress-text {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== Player Bar ===== */
.player-bar {
  height: var(--player-height);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 20px;
  position: relative;
  z-index: 100;
  backdrop-filter: blur(20px);
}
.player-track-info {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 200px;
  max-width: 280px;
  flex: 1;
}
.player-cover {
  width: 56px; height: 56px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.player-cover img { width: 100%; height: 100%; object-fit: cover; }
.player-cover .placeholder { color: var(--text-muted); font-size: 20px; }
.player-track-text { overflow: hidden; }
.player-track-title {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player-track-artist {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 2;
  max-width: 600px;
}
.player-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
}
.player-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.player-btn:hover { color: var(--text-primary); }
.player-btn svg { width: 20px; height: 20px; }
.player-btn.play-btn {
  width: 40px; height: 40px;
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: 50%;
}
.player-btn.play-btn:hover { transform: scale(1.06); }
.player-btn.play-btn svg { width: 18px; height: 18px; }

.player-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}
.player-time {
  font-size: 11px;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.progress-bar {
  flex: 1;
  height: 24px;
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
}
.progress-bar::before {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  transition: height 0.15s ease;
}
.progress-bar:hover::before { height: 6px; }
.progress-bar .fill {
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  position: relative;
  transition: height 0.15s ease;
}
.progress-bar:hover .fill { height: 6px; }
.progress-bar .fill::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px; height: 10px;
  background: var(--text-primary);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.15s;
}
.progress-bar:hover .fill::after { opacity: 1; }

.player-extra {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 160px;
  justify-content: flex-end;
  flex: 1;
}

/* ===== Player Lyrics ===== */
.player-lyrics {
  flex: 1.5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  overflow: hidden;
  padding: 4px 16px;
  min-width: 0;
}
.lyrics-line {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  text-align: center;
  transition: all 0.3s ease;
  line-height: 1.6;
}
.lyrics-line.current {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}
.lyrics-line.prev,
.lyrics-line.next {
  opacity: 0.6;
}

.volume-control {
  display: flex;
  align-items: center;
  gap: 8px;
}
.volume-control svg { width: 18px; height: 18px; color: var(--text-secondary); }
.volume-bar {
  width: 80px;
  height: 24px;
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
}
.volume-bar::before {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  transition: height 0.15s ease;
}
.volume-bar:hover::before { height: 6px; }
.volume-bar .fill {
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  position: relative;
  transition: height 0.15s ease;
}
.volume-bar:hover .fill { height: 6px; }

/* ===== Loading & Empty States ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ===== Search ===== */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  margin-bottom: 20px;
  max-width: 360px;
}
.search-bar svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
.search-bar input::placeholder { color: var(--text-muted); }

/* ===== Filter Toolbar ===== */
.filter-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-toolbar .search-bar {
  margin-bottom: 0;
}
.filter-select {
  padding: 8px 32px 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238888a0' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: var(--transition);
}
.filter-select:hover,
.filter-select:focus {
  border-color: var(--accent);
}
.filter-info {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: auto;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 28px;
  padding: 8px 0;
}
.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}
.pagination-btn:hover:not(:disabled):not(.active) {
  border-color: var(--accent);
  color: var(--accent);
}
.pagination-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-weight: 600;
}
.pagination-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.pagination-ellipsis {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  margin-bottom: 8px;
}
.theme-toggle-label {
  font-size: 12px;
  color: var(--text-secondary);
}
.theme-switch {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
}
.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.theme-switch .slider {
  position: absolute;
  inset: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}
.theme-switch .slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  top: 2px;
  background: var(--accent);
  border-radius: 50%;
  transition: transform 0.25s ease;
}
.theme-switch input:checked + .slider {
  background: var(--bg-active);
}
.theme-switch input:checked + .slider::before {
  transform: translateX(20px);
}
.theme-icons {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { padding: 20px; }
  .album-detail-header { flex-direction: column; align-items: center; text-align: center; }
  .album-detail-cover { width: 160px; height: 160px; }
  .player-track-info { min-width: 120px; max-width: 160px; }
  .player-extra { display: none; }
  .player-lyrics { display: none; }
  .filter-toolbar { flex-direction: column; align-items: stretch; }
  .filter-info { margin-left: 0; }
}