/* ============================================
   AI MUSIC STUDIO — Glassmorphism redesign
   ============================================ */

:root {
  /* type */
  --font-sans: 'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --font-display: 'Geist', ui-sans-serif, system-ui, sans-serif;

  /* accent — violet → cyan (default) */
  --accent: #a78bfa;
  --accent-2: #67e8f9;
  --accent-glow: rgba(167, 139, 250, 0.45);
  --accent-soft: rgba(167, 139, 250, 0.12);

  /* radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-full: 999px;

  /* density */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  --glass-blur: 28px;
  --glass-noise: 0.4;

  --tx: 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---- THEME: DARK (default) ---- */
[data-theme="dark"] {
  --bg-0: #0a0a0c;
  --bg-1: #111114;
  --fg-0: #f5f5f7;
  --fg-1: #c9c9d1;
  --fg-2: #8a8a96;
  --fg-3: #54545d;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --glass-bg: rgba(24, 24, 28, 0.55);
  --glass-bg-strong: rgba(28, 28, 34, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.06);

  --aurora-1: rgba(167, 139, 250, 0.35);
  --aurora-2: rgba(103, 232, 249, 0.25);
  --aurora-3: rgba(244, 114, 182, 0.18);

  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 20px 60px rgba(0, 0, 0, 0.5);

  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #34d399;
  --star: #fde047;
}

/* ---- THEME: LIGHT ---- */
[data-theme="light"] {
  --bg-0: #f4f3ef;
  --bg-1: #fbfaf7;
  --fg-0: #0f0f12;
  --fg-1: #2c2c33;
  --fg-2: #5d5d68;
  --fg-3: #9a9aa3;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);

  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-bg-strong: rgba(255, 255, 255, 0.78);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-highlight: rgba(255, 255, 255, 0.8);

  --aurora-1: rgba(167, 139, 250, 0.55);
  --aurora-2: rgba(103, 232, 249, 0.5);
  --aurora-3: rgba(244, 114, 182, 0.4);

  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 10px 30px rgba(20, 20, 30, 0.08);
  --shadow-2: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 24px 60px rgba(20, 20, 30, 0.12);

  --danger: #dc2626;
  --warn: #d97706;
  --ok: #059669;
  --star: #eab308;
}

/* ---- LIGHT MODE FINE-TUNES ---- */
[data-theme="light"] body {
  background:
    radial-gradient(circle at 20% 10%, rgba(167, 139, 250, 0.18), transparent 50%),
    radial-gradient(circle at 90% 90%, rgba(103, 232, 249, 0.18), transparent 55%),
    #f4f3ef;
}
[data-theme="light"] .aurora-noise { opacity: 0.025; }
[data-theme="light"] .btn-glass { background: rgba(255, 255, 255, 0.7); }
[data-theme="light"] .btn-glass:hover { background: rgba(255, 255, 255, 0.9); }
[data-theme="light"] .nav-item:hover { background: rgba(0, 0, 0, 0.04); }
[data-theme="light"] .nav-item.active { background: var(--accent-soft); color: var(--fg-0); }
[data-theme="light"] .icon-btn:hover { background: rgba(0, 0, 0, 0.05); }
[data-theme="light"] .search { background: rgba(255, 255, 255, 0.7); }
[data-theme="light"] .scrubber-bar { background: rgba(0, 0, 0, 0.08); }
[data-theme="light"] .input { background: rgba(255, 255, 255, 0.75); }
[data-theme="light"] .input:focus { background: #fff; }
[data-theme="light"] .auth-tab-row { background: rgba(0, 0, 0, 0.04); }
[data-theme="light"] .oauth-btn { background: rgba(255, 255, 255, 0.75); }
[data-theme="light"] .oauth-btn:hover { background: #fff; }
[data-theme="light"] .track-cover, [data-theme="light"] .row-cover, [data-theme="light"] .np-cover {
  /* darker neutral around procedural art so it pops on cream bg */
  background: #1f1f24;
}
[data-theme="light"] .toast { background: rgba(255, 255, 255, 0.9); color: var(--fg-0); }
[data-theme="light"] .stat-card,
[data-theme="light"] .chart-card,
[data-theme="light"] .glass {
  /* slightly lift glass cards on cream so they don't disappear */
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 8px 24px rgba(20, 20, 30, 0.06), 0 1px 3px rgba(20, 20, 30, 0.04);
}
[data-theme="light"] .table tr:hover td { background: rgba(0, 0, 0, 0.03); }
[data-theme="light"] .comment-timestamp { background: var(--accent-soft); }
[data-theme="light"] .track-row.playing { background: var(--accent-soft); }
[data-theme="light"] .scrubber-bar .fill::after { box-shadow: 0 0 0 4px var(--accent-soft); }
[data-theme="light"] .modal-backdrop { background: rgba(20, 20, 30, 0.3); }
[data-theme="light"] .waveform-bar { background: #6b6b75; }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.15); background-clip: content-box; border: 2px solid transparent; }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.25); background-clip: content-box; border: 2px solid transparent; }
[data-theme="light"] .kbd { background: rgba(255, 255, 255, 0.7); }
[data-theme="light"] .pill.muted { background: rgba(0, 0, 0, 0.05); }
[data-theme="light"] .track-tag { background: rgba(0, 0, 0, 0.05); }
[data-theme="light"] .auth-shell::before {
  /* extra warmth behind auth card */
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(167, 139, 250, 0.18), transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(103, 232, 249, 0.15), transparent 50%);
  z-index: 0;
  pointer-events: none;
}

/* ============================================
   RESET / BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
body {
  background: var(--bg-0);
  color: var(--fg-0);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden; /* app shell handles scroll */
  transition: background var(--tx), color var(--tx);
}

button {
  font-family: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
}
input, textarea, select {
  font-family: inherit;
  color: inherit;
}
a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--line-strong); background-clip: content-box; border: 2px solid transparent; }

/* ============================================
   AURORA BACKDROP
   ============================================ */
.aurora {
  position: fixed; inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.aurora::before, .aurora::after, .aurora > span {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.9;
  will-change: transform;
}
.aurora::before {
  width: 720px; height: 720px;
  background: var(--aurora-1);
  top: -200px; left: -100px;
  animation: aurora-drift-1 28s ease-in-out infinite;
}
.aurora::after {
  width: 620px; height: 620px;
  background: var(--aurora-2);
  bottom: -200px; right: -100px;
  animation: aurora-drift-2 32s ease-in-out infinite;
}
.aurora > span {
  width: 540px; height: 540px;
  background: var(--aurora-3);
  top: 30%; left: 40%;
  animation: aurora-drift-3 36s ease-in-out infinite;
}
@keyframes aurora-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(200px, 120px) scale(1.1); }
}
@keyframes aurora-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-180px, -80px) scale(1.15); }
}
@keyframes aurora-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-120px, 100px) scale(1.05); }
  66% { transform: translate(140px, -100px) scale(0.95); }
}

/* Subtle noise overlay on top of aurora */
.aurora-noise {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  opacity: 0.04;
  mix-blend-mode: overlay;
}

/* ============================================
   GLASS
   ============================================ */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  position: relative;
}
.glass-strong {
  background: var(--glass-bg-strong);
}
.glass::before {
  /* top inner highlight */
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  pointer-events: none;
}

/* ============================================
   APP SHELL
   ============================================ */
.app {
  position: relative;
  z-index: 2;
  height: 100vh;
  height: 100dvh; /* progressive: excludes mobile browser chrome */
  display: grid;
  grid-template-columns: 248px 1fr;
  grid-template-rows: 1fr auto;
  gap: var(--space-4);
  padding: var(--space-4);
}
.app.no-sidebar {
  grid-template-columns: 1fr;
}

/* Sidebar */
.sidebar {
  grid-row: 1 / span 2;
  display: flex;
  flex-direction: column;
  padding: var(--space-5) var(--space-4);
  gap: var(--space-5);
  overflow-y: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 var(--space-2);
}
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  display: grid; place-items: center;
  box-shadow: 0 8px 20px var(--accent-glow);
  color: #fff;
  flex-shrink: 0;
}
.brand-name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 4px;
}

.nav-section {
  display: flex; flex-direction: column; gap: 2px;
}
.nav-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  padding: 0 var(--space-3);
  margin-bottom: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--fg-1);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--tx), color var(--tx);
  text-align: left;
  width: 100%;
}
.nav-item svg { flex-shrink: 0; opacity: 0.9; }
.nav-item:hover { background: var(--glass-highlight); color: var(--fg-0); }
.nav-item.active {
  background: var(--accent-soft);
  color: var(--fg-0);
  position: relative;
}
.nav-item.active::before {
  content: '';
  position: absolute; left: -4px; top: 50%;
  width: 3px; height: 18px; transform: translateY(-50%);
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--accent-glow);
}

.sidebar-foot {
  margin-top: auto;
  display: flex; flex-direction: column; gap: var(--space-2);
}

/* Main */
.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
}
.topbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}
.search {
  flex: 1;
  max-width: 480px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  color: var(--fg-2);
  transition: border-color var(--tx);
}
.search:focus-within { border-color: var(--accent); }
.search input {
  flex: 1; border: 0; background: transparent; outline: none;
  font-size: 13px; color: var(--fg-0);
}
.search input::placeholder { color: var(--fg-3); }

.topbar-actions { margin-left: auto; display: flex; gap: var(--space-2); align-items: center; }

.icon-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: grid; place-items: center;
  color: var(--fg-1);
  border: 1px solid transparent;
  transition: background var(--tx), border-color var(--tx), color var(--tx);
  position: relative;
}
.icon-btn:hover { background: var(--glass-highlight); color: var(--fg-0); border-color: var(--line); }
.icon-btn .badge {
  position: absolute; top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--glass-bg-strong), 0 0 8px var(--accent-glow);
}

.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  color: #fff;
  font-weight: 600; font-size: 13px;
  flex-shrink: 0;
  border: 1px solid var(--glass-border);
}
.avatar.sm { width: 28px; height: 28px; font-size: 11px; }
.avatar.lg { width: 56px; height: 56px; font-size: 18px; }
.avatar.xl { width: 96px; height: 96px; font-size: 32px; }

.scroll-area {
  flex: 1;
  min-height: 0; /* prevents flex item expanding past container — required for overflow-y: auto to work */
  overflow-y: auto;
  padding: var(--space-5) var(--space-6) var(--space-6);
}

/* Now-playing footer */
.player-bar {
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  flex-shrink: 0;
}
.player-bar.full { grid-column: 1 / -1; }

.np-cover {
  width: 56px; height: 56px;
  border-radius: 10px;
  flex-shrink: 0;
  background: var(--bg-1);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--glass-border);
}
.np-meta { display: flex; flex-direction: column; min-width: 0; }
.np-title { font-weight: 600; font-size: 13px; color: var(--fg-0); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.np-artist { font-size: 11px; color: var(--fg-2); font-family: var(--font-mono); }

.transport {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.transport .play {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--fg-0);
  color: var(--bg-0);
  display: grid; place-items: center;
  transition: transform var(--tx);
}
.transport .play:hover { transform: scale(1.08); }
.transport .play.lg { width: 56px; height: 56px; }

.scrubber {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.scrubber-bar {
  flex: 1;
  height: 4px;
  background: var(--line);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
}
.scrubber-bar .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  position: relative;
}
.scrubber-bar .fill::after {
  content: '';
  position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 12px; height: 12px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--accent-soft);
  opacity: 0; transition: opacity var(--tx);
}
.scrubber-bar:hover .fill::after { opacity: 1; }
.scrubber .time { font-family: var(--font-mono); font-size: 11px; color: var(--fg-2); width: 40px; }
.scrubber .time.r { text-align: right; }

/* ── Equalizer bars ── */
.eq-bars {
  display: flex; align-items: flex-end; gap: 2px; height: 14px; flex-shrink: 0;
}
.eq-bar {
  width: 3px; border-radius: 2px;
  background: linear-gradient(to top, var(--accent), var(--accent-2));
  height: 3px;
  transition: height 0.15s;
}
.eq-bars.playing .eq-bar-1 { animation: eq 0.65s ease-in-out infinite alternate; }
.eq-bars.playing .eq-bar-2 { animation: eq 0.45s ease-in-out infinite alternate 0.12s; }
.eq-bars.playing .eq-bar-3 { animation: eq 0.80s ease-in-out infinite alternate 0.25s; }
.eq-bars.playing .eq-bar-4 { animation: eq 0.55s ease-in-out infinite alternate 0.08s; }
.eq-bars.playing .eq-bar-5 { animation: eq 0.72s ease-in-out infinite alternate 0.18s; }
@keyframes eq { from { height: 2px; } to { height: 13px; } }

/* ── Notification dropdown ── */
.notif-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 300px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  z-index: 300;
}
.notif-dropdown-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.notif-item {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  cursor: default;
  transition: background var(--tx);
}
.notif-item:last-child { border-bottom: none; }
.notif-item:hover { background: var(--glass-highlight); }

.volume {
  display: flex; align-items: center; gap: 8px;
  color: var(--fg-2);
}
.volume input[type=range] {
  -webkit-appearance: none;
  width: 100px;
  height: 4px;
  background: var(--line);
  border-radius: 999px;
  outline: none;
}
.volume input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  background: var(--fg-0);
  border-radius: 50%;
  cursor: pointer;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform var(--tx), background var(--tx), color var(--tx), border-color var(--tx), opacity var(--tx);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0a0a0c;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-glass {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  color: var(--fg-0);
  backdrop-filter: blur(20px);
}
.btn-glass:hover { background: var(--glass-bg-strong); border-color: var(--line-strong); }
.btn-ghost {
  background: transparent;
  color: var(--fg-1);
}
.btn-ghost:hover { background: var(--glass-highlight); color: var(--fg-0); }
.btn-danger {
  background: rgba(248, 113, 113, 0.12);
  color: var(--danger);
  border-color: rgba(248, 113, 113, 0.25);
}
.btn-danger:hover { background: rgba(248, 113, 113, 0.2); }
.btn-lg { padding: 14px 28px; font-size: 14px; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */
.h1 {
  font-size: 48px; font-weight: 700; letter-spacing: -0.03em;
  line-height: 1.05; margin: 0;
  text-wrap: balance;
}
.h2 { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; margin: 0; }
.h3 { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; margin: 0; }
.h4 { font-size: 15px; font-weight: 600; line-height: 1.3; margin: 0; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.mono { font-family: var(--font-mono); }
.fg-2 { color: var(--fg-2); }
.fg-3 { color: var(--fg-3); }
.accent { color: var(--accent); }
.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-6);
  padding: var(--space-6);
  border-radius: var(--r-xl);
  margin-bottom: var(--space-6);
  position: relative;
  overflow: hidden;
  min-height: 360px;
}
.hero-content { display: flex; flex-direction: column; justify-content: center; gap: var(--space-4); z-index: 2; }
.hero-stat-row { display: flex; gap: var(--space-5); margin-top: var(--space-2); }
.hero-stat { display: flex; flex-direction: column; gap: 2px; }
.hero-stat-num { font-size: 22px; font-weight: 700; font-family: var(--font-mono); letter-spacing: -0.02em; }
.hero-stat-lbl { font-size: 11px; color: var(--fg-2); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; }

.hero-visual {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  display: grid; place-items: center;
}
.hero-disc {
  width: 280px; height: 280px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--accent), var(--accent-2), var(--accent));
  position: relative;
  animation: spin 20s linear infinite;
  box-shadow: 0 30px 80px var(--accent-glow), inset 0 0 0 20px rgba(0,0,0,0.6);
}
[data-theme="light"] .hero-disc {
  box-shadow: 0 30px 80px var(--accent-glow), inset 0 0 0 20px rgba(20,20,30,0.85);
}
.hero-disc::before {
  content: '';
  position: absolute; inset: 30px;
  border-radius: 50%;
  background: #0a0a0c;
  background-image:
    repeating-radial-gradient(circle at center, transparent 0, transparent 4px, rgba(255,255,255,0.06) 4px, rgba(255,255,255,0.06) 5px);
}
.hero-disc::after {
  content: '';
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 30px var(--accent-glow);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   CARDS
   ============================================ */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: var(--space-4);
}
.section-head .h2 .accent-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 8px;
  box-shadow: 0 0 12px var(--accent-glow);
  vertical-align: middle;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}

.track-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--tx), transform var(--tx);
}
.track-card:hover { background: var(--glass-highlight); transform: translateY(-2px); }
.track-cover {
  aspect-ratio: 1;
  width: 100%;
  border-radius: var(--r-md);
  position: relative;
  overflow: hidden;
  background: var(--bg-1);
}
.track-cover .cover-art {
  position: absolute; inset: 0;
}
.track-cover .play-overlay {
  position: absolute;
  bottom: 10px; right: 10px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--fg-0);
  color: var(--bg-0);
  display: grid; place-items: center;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--tx), transform var(--tx);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.track-card:hover .play-overlay { opacity: 1; transform: translateY(0); }
.track-info { display: flex; flex-direction: column; gap: 2px; }
.track-title-line { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.track-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--glass-highlight);
  color: var(--fg-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.track-tag.ai { background: rgba(167,139,250,0.15); color: var(--accent); }
.track-tag.human { background: rgba(103,232,249,0.15); color: var(--accent-2); }

/* ============================================
   LIST / TRACK ROW
   ============================================ */
.track-list { display: flex; flex-direction: column; gap: 4px; }
.track-row {
  display: grid;
  grid-template-columns: 24px 48px 1.4fr 1fr 80px 100px 60px;
  gap: var(--space-3);
  align-items: center;
  padding: 10px var(--space-3);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--tx);
}
.track-row:hover { background: var(--glass-highlight); }
.track-row.playing { background: var(--accent-soft); }
.track-row .idx { font-family: var(--font-mono); font-size: 12px; color: var(--fg-3); text-align: center; }
.track-row .row-cover { width: 40px; height: 40px; border-radius: 8px; overflow: hidden; position: relative; }
.track-row .row-title { font-weight: 600; font-size: 13px; color: var(--fg-0); }
.track-row .row-sub { font-size: 11px; color: var(--fg-2); font-family: var(--font-mono); }
.track-row .row-duration { font-family: var(--font-mono); font-size: 11px; color: var(--fg-2); text-align: right; }
.track-row .row-actions { display: flex; gap: 4px; justify-content: flex-end; }

/* ============================================
   FILTERS / CHIPS
   ============================================ */
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 6px 14px;
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 500;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--fg-1);
  cursor: pointer;
  transition: all var(--tx);
}
.chip:hover { background: var(--glass-bg-strong); border-color: var(--line-strong); }
.chip.active {
  background: var(--fg-0);
  color: var(--bg-0);
  border-color: var(--fg-0);
}

/* ============================================
   STAR RATING
   ============================================ */
.stars { display: inline-flex; gap: 2px; align-items: center; }
.star {
  color: var(--fg-3);
  transition: color var(--tx), transform var(--tx);
  display: grid; place-items: center;
}
.star.filled { color: var(--star); filter: drop-shadow(0 0 4px rgba(253, 224, 71, 0.4)); }
.star.interactive { cursor: pointer; }
.star.interactive:hover { transform: scale(1.15); }
.rating-summary {
  display: inline-flex; align-items: baseline; gap: 6px;
  font-family: var(--font-mono);
}
.rating-summary .big { font-size: 28px; font-weight: 700; color: var(--fg-0); letter-spacing: -0.02em; }
.rating-summary .out-of { font-size: 12px; color: var(--fg-3); }

/* ============================================
   COMMENTS
   ============================================ */
.comment {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--glass-border);
}
.comment:first-child { border-top: 0; }
.comment-body { flex: 1; min-width: 0; }
.comment-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.comment-name { font-weight: 600; font-size: 13px; }
.comment-timestamp {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
}
.comment-time { font-size: 11px; color: var(--fg-3); font-family: var(--font-mono); }
.comment-text { font-size: 13px; color: var(--fg-1); margin: 4px 0 6px; line-height: 1.5; }
.comment-actions { display: flex; gap: var(--space-3); font-size: 11px; color: var(--fg-3); }
.comment-actions button { color: var(--fg-3); transition: color var(--tx); }
.comment-actions button:hover { color: var(--fg-1); }

/* Waveform-style comment markers */
.waveform-wrap {
  position: relative;
  height: 72px;
  border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--glass-bg), transparent);
  padding: 8px 0;
  margin: var(--space-4) 0;
}
.waveform {
  display: flex;
  align-items: center;
  height: 56px;
  gap: 2px;
  padding: 0 4px;
}
.waveform-bar {
  flex: 1;
  background: var(--fg-3);
  border-radius: 2px;
  min-height: 4px;
  opacity: 0.4;
  transition: opacity var(--tx), background var(--tx);
}
.waveform-bar.played { background: var(--accent); opacity: 1; }
.waveform-marker {
  position: absolute;
  bottom: -4px;
  transform: translateX(-50%);
  z-index: 2;
}
.waveform-marker .pin {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg-0);
  cursor: pointer;
  position: relative;
}
.waveform-marker .pin:hover .marker-pop {
  opacity: 1; transform: translateX(-50%) translateY(-4px);
}
.marker-pop {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--tx), transform var(--tx);
  box-shadow: var(--shadow-1);
}

/* ============================================
   FORMS
   ============================================ */
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.input {
  padding: 12px 14px;
  border-radius: var(--r-md);
  background: var(--bg-1);
  border: 1px solid var(--line);
  outline: none;
  font-size: 13px;
  color: var(--fg-0);
  transition: border-color var(--tx), box-shadow var(--tx);
  width: 100%;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.input::placeholder { color: var(--fg-3); }
textarea.input { resize: vertical; min-height: 80px; font-family: inherit; }

/* ============================================
   MODAL
   ============================================ */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid; place-items: center;
  z-index: 100;
  padding: var(--space-5);
  animation: fade-in 200ms ease-out;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-6);
  border-radius: var(--r-xl);
  animation: pop-in 240ms cubic-bezier(0.2, 0.9, 0.3, 1.2);
}
@keyframes pop-in {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-5); }
.modal-title { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; }
.modal-close {
  width: 32px; height: 32px;
  border-radius: 10px;
  display: grid; place-items: center;
  color: var(--fg-2);
}
.modal-close:hover { background: var(--glass-highlight); color: var(--fg-0); }

/* ============================================
   SHARE GRID
   ============================================ */
.share-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin: var(--space-4) 0;
}
.share-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: var(--space-3) var(--space-2);
  border-radius: var(--r-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: transform var(--tx), background var(--tx);
}
.share-btn:hover { transform: translateY(-2px); background: var(--glass-bg-strong); }
.share-ic {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid; place-items: center;
  color: #fff;
}
.share-ic.wa { background: #25d366; }
.share-ic.ig { background: linear-gradient(135deg, #f09433, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888); }
.share-ic.fb { background: #1877f2; }
.share-ic.tg { background: #229ed9; }
.share-ic.tw { background: #000; }
.share-ic.cp { background: var(--fg-0); color: var(--bg-0); }
.share-ic.qr { background: var(--bg-1); color: var(--fg-0); border: 1px solid var(--line); }
.share-ic.em { background: #ef4444; }
.share-lbl { font-size: 11px; color: var(--fg-1); }

.share-link-row {
  display: flex; gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-1);
  align-items: center;
}
.share-link-row code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-1);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 6px;
}

/* ============================================
   ADMIN
   ============================================ */
.admin-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-4);
  border-radius: var(--r-md);
  background: rgba(167, 139, 250, 0.08);
  border: 1px solid rgba(167, 139, 250, 0.2);
  margin-bottom: var(--space-5);
  font-size: 12px;
}
.admin-banner .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 12px var(--accent-glow);
  flex-shrink: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.stat-card {
  padding: var(--space-5);
  border-radius: var(--r-lg);
  display: flex; flex-direction: column; gap: var(--space-2);
}
.stat-label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-2); }
.stat-value { font-size: 32px; font-weight: 700; letter-spacing: -0.03em; font-family: var(--font-mono); }
.stat-delta { font-size: 11px; font-family: var(--font-mono); display: inline-flex; align-items: center; gap: 4px; }
.stat-delta.up { color: var(--ok); }
.stat-delta.dn { color: var(--danger); }

.chart-card { padding: var(--space-5); border-radius: var(--r-lg); }
.chart {
  height: 200px;
  margin-top: var(--space-3);
  position: relative;
}

.table {
  width: 100%;
  border-collapse: collapse;
}
.table th, .table td {
  text-align: left;
  padding: 12px var(--space-3);
  border-bottom: 1px solid var(--glass-border);
  font-size: 13px;
}
.table th {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-2);
  font-weight: 500;
}
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: var(--glass-highlight); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.pill.ok { background: rgba(52, 211, 153, 0.12); color: var(--ok); }
.pill.warn { background: rgba(251, 191, 36, 0.12); color: var(--warn); }
.pill.danger { background: rgba(248, 113, 113, 0.12); color: var(--danger); }
.pill.muted { background: var(--glass-highlight); color: var(--fg-2); }
.pill.accent { background: var(--accent-soft); color: var(--accent); }

/* ============================================
   AUTH SCREEN
   ============================================ */
.auth-shell {
  height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-5);
  position: relative; z-index: 2;
}
.auth-card {
  width: 100%;
  max-width: 440px;
  padding: var(--space-7);
  border-radius: var(--r-xl);
  display: flex; flex-direction: column; gap: var(--space-5);
}
.auth-tab-row {
  display: flex;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  padding: 4px;
  gap: 4px;
}
.auth-tab {
  flex: 1;
  padding: 8px;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-2);
  transition: all var(--tx);
}
.auth-tab.active { background: var(--fg-0); color: var(--bg-0); }

.oauth-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.oauth-btn {
  padding: 10px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--bg-1);
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 13px; font-weight: 500;
  color: var(--fg-0);
  transition: background var(--tx);
}
.oauth-btn:hover { background: var(--glass-highlight); }

.divider {
  display: flex; align-items: center; gap: var(--space-3);
  color: var(--fg-3);
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* ============================================
   TOASTS
   ============================================ */
.toast-stack {
  position: fixed; bottom: 100px; right: var(--space-5);
  display: flex; flex-direction: column; gap: 8px;
  z-index: 1000;
}
.toast {
  padding: 10px 16px;
  border-radius: var(--r-md);
  font-size: 13px;
  display: flex; align-items: center; gap: 10px;
  animation: slide-in 240ms cubic-bezier(0.2, 0.9, 0.3, 1.2);
  min-width: 240px;
}
@keyframes slide-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
.toast .dot { width: 8px; height: 8px; border-radius: 50%; }
.toast.success .dot { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.toast.info .dot { background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }

/* ============================================
   ALBUM ART (procedural placeholders)
   ============================================ */
.art {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  overflow: hidden;
}
.art .art-shape {
  width: 60%; height: 60%;
  border-radius: 50%;
  filter: blur(0.5px);
}
.art-1 { background: linear-gradient(135deg, #6b7280, #1f2937); }
.art-1 .art-shape { background: radial-gradient(circle at 30% 30%, #f3f4f6, #4b5563 60%, transparent 70%); }
.art-2 { background: linear-gradient(180deg, #fef3c7, #f59e0b 50%, #1c1917 100%); }
.art-2 .art-shape { background: radial-gradient(circle at 50% 70%, #fff7ed, transparent 60%); width: 100%; height: 100%; border-radius: 0; }
.art-3 { background: linear-gradient(180deg, #1e1b4b, #312e81 40%, #db2777); }
.art-3 .art-shape {
  background: linear-gradient(180deg, transparent 40%, #db2777 50%, #fbbf24 60%, transparent 70%);
  width: 80%; height: 80%; border-radius: 0;
  clip-path: polygon(0 80%, 20% 60%, 30% 70%, 50% 40%, 70% 65%, 85% 50%, 100% 70%, 100% 100%, 0 100%);
}
.art-4 { background: radial-gradient(circle at 50% 40%, #fef3c7, #b45309 30%, #1c1917 70%); }
.art-4 .art-shape {
  background: radial-gradient(circle, #fef3c7 10%, #fbbf24 20%, #b45309 35%, transparent 60%);
  width: 100%; height: 100%; border-radius: 0;
}
.art-5 { background: linear-gradient(180deg, #064e3b, #0c0a09); }
.art-5 .art-shape {
  background: radial-gradient(circle at 50% 80%, #facc15 5%, #f97316 15%, transparent 40%);
  width: 100%; height: 100%; border-radius: 0;
}
.art-6 { background: linear-gradient(135deg, #831843, #4c1d95); }
.art-6 .art-shape { background: linear-gradient(135deg, #f472b6, #818cf8); transform: rotate(45deg); width: 70%; height: 70%; border-radius: 12px; }
.art-7 { background: linear-gradient(180deg, #082f49, #020617); }
.art-7 .art-shape { background: radial-gradient(circle, #67e8f9 10%, transparent 50%); width: 100%; height: 100%; border-radius: 0; }
.art-8 { background: linear-gradient(135deg, #422006, #fef3c7); }
.art-8 .art-shape {
  background: conic-gradient(from 0deg, #f59e0b, #fef3c7, #f59e0b);
  width: 80%; height: 80%; border-radius: 50%;
}

/* ============================================
   MISC
   ============================================ */
.divider-line { height: 1px; background: var(--glass-border); margin: var(--space-5) 0; }

.row { display: flex; align-items: center; }
.row.gap-2 { gap: var(--space-2); }
.row.gap-3 { gap: var(--space-3); }
.row.gap-4 { gap: var(--space-4); }
.col { display: flex; flex-direction: column; }
.col.gap-2 { gap: var(--space-2); }
.col.gap-3 { gap: var(--space-3); }
.col.gap-4 { gap: var(--space-4); }
.spacer { flex: 1; }

.kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  color: var(--fg-2);
}

/* Trending bars */
.trend-bar {
  display: grid;
  grid-template-columns: 60px 48px 1fr 80px 50px;
  gap: var(--space-3);
  align-items: center;
  padding: 12px var(--space-3);
  border-radius: var(--r-md);
  transition: background var(--tx);
  cursor: pointer;
}
.trend-bar:hover { background: var(--glass-highlight); }
.trend-rank {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.04em;
  color: var(--fg-3);
}
.trend-rank.top { color: var(--accent); -webkit-text-fill-color: transparent; background: linear-gradient(180deg, var(--accent), var(--accent-2)); background-clip: text; -webkit-background-clip: text; }
.trend-plays { font-family: var(--font-mono); font-size: 12px; color: var(--fg-2); text-align: right; }

/* QR placeholder */
.qr-block {
  width: 180px; height: 180px;
  margin: 0 auto;
  background:
    repeating-conic-gradient(var(--fg-0) 0 25%, transparent 0 50%) 0 0/12px 12px;
  border-radius: var(--r-md);
  border: 4px solid var(--fg-0);
  position: relative;
}
.qr-block::after {
  content: '';
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 36px; height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: 4px solid var(--bg-1);
}

@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: 240px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-chart-grid { grid-template-columns: 1fr !important; }
}

/* Mobile nav — hidden on desktop */
.mob-nav { display: none; }

/* ============================================================
   MOBILE  ≤ 820 px
   ============================================================ */
@media (max-width: 820px) {

  /* ── Prevent horizontal bleed from any wide child ── */
  html, body { overflow-x: hidden; max-width: 100%; }

  /* ── App shell ── */
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto auto;  /* main | player | mob-nav */
    padding: var(--space-2);
    gap: var(--space-2);
    /* 100dvh = viewport minus browser chrome (address bar + home indicator).
       Falls back to 100vh on browsers that don't support dvh. */
    height: 100dvh;
    overflow-x: hidden;
  }
  .sidebar { display: none; }
  /* min-height: 0 lets the grid row stay at 1fr instead of growing to fit content */
  .main { border-radius: var(--r-md); min-height: 0; overflow-x: hidden; }

  /* ── Scroll area ── */
  .scroll-area { padding: var(--space-4) var(--space-4) var(--space-5); }

  /* ── Topbar ── */
  .topbar { padding: var(--space-2) var(--space-3); gap: var(--space-2); }
  .topbar .btn-glass { display: none; }   /* hide "New playlist" on mobile */
  .search { max-width: none; }

  /* ── Player bar ── */
  .player-bar {
    grid-column: 1 / -1;
    padding: var(--space-2) var(--space-3);
    gap: var(--space-3);
  }
  /* Shrink now-playing section + hide volume row */
  .player-bar > .row:first-child { width: auto; min-width: 0; flex: 1; }
  .player-bar > .row:last-child { display: none; }
  /* Hide shuffle + repeat, keep back/play/fwd */
  .transport .icon-btn:first-child,
  .transport .icon-btn:last-child { display: none; }

  /* ── Mobile bottom nav ── */
  .mob-nav {
    grid-column: 1 / -1;
    display: flex !important;
    align-items: center;
    justify-content: space-around;
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
    border-radius: var(--r-md);
  }
  .mob-nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 4px;
    background: none;
    border: none;
    color: var(--fg-3);
    cursor: pointer;
    font-size: 10px;
    font-family: var(--font-ui);
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--tx);
    border-radius: 8px;
  }
  .mob-nav-btn.active { color: var(--accent); }
  .mob-nav-btn:hover { color: var(--fg-0); }
  .mob-nav-btn.mob-nav-switch { color: var(--fg-2); }
  .mob-nav-btn.mob-nav-switch.admin-active { color: var(--accent-2, #f59e0b); }

  /* ── Section heads ── */
  .section-head { flex-wrap: wrap; gap: var(--space-3); }
  .section-head .h1 { font-size: 28px !important; }
  .section-head .row { flex-wrap: wrap; }

  /* ── Admin grids ── */
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .admin-chart-grid { grid-template-columns: 1fr !important; }
  .admin-ql-grid { grid-template-columns: 1fr !important; }
  .admin-form-grid { grid-template-columns: 1fr !important; }
  .admin-form-grid [style*="span 2"] { grid-column: span 1 !important; }
  .oauth-row { grid-template-columns: 1fr !important; }

  /* ── Track rows ── */
  .track-row { grid-template-columns: 24px 44px 1fr 60px; gap: 8px; }
  .track-row .row-sub-mobile-hide, .track-row .row-rating { display: none; }

  /* ── Track detail screen ── */
  .track-header-grid { grid-template-columns: 1fr !important; padding: var(--space-4) !important; }
  .track-header-art { width: 100% !important; height: 200px !important; }
  .track-detail-title { font-size: 28px !important; }
  .track-lower-grid { grid-template-columns: 1fr !important; }

  /* ── Admin track catalog rows ── */
  .admin-track-row { flex-wrap: nowrap; }
  .admin-track-row .atr-num { display: none; }
  .admin-track-row .atr-plays { display: none; }
  .admin-track-row .atr-meta { max-width: 160px; }

  /* ── Notification dropdown ── */
  .notif-dropdown { width: 280px; }

  /* ── Hero ── */
  .hero-stat-row { flex-wrap: wrap; gap: var(--space-3); }
  .hero-visual { min-height: 180px; }

  /* ── Home: tracks + playlists two-column → single column ── */
  .home-two-col { grid-template-columns: 1fr !important; }

  /* ── Card grid: floor at 1 column on narrow screens ── */
  .card-grid { grid-template-columns: 1fr 1fr; }

  /* ── Right-edge overflow fixes ── */

  /* Hide native scrollbar so it doesn't eat right-side layout space.
     (scrollbar-width: none = Firefox; ::-webkit-scrollbar = Chrome/Safari/WebKit) */
  .scroll-area { overflow-x: hidden; scrollbar-width: none; }
  .scroll-area::-webkit-scrollbar { display: none; }

  /* Allow search to shrink below its placeholder text min-content width */
  .topbar { overflow: hidden; }
  .search { min-width: 0; }
  .search input { min-width: 0; width: 0; } /* width:0 + flex:1 = grows into available space only */

  /* Mobile nav: prevent any item from blowing past its 1/N share of the bar */
  .mob-nav { overflow: hidden; }
  .mob-nav-btn { min-width: 0; flex-shrink: 1; }
  .mob-nav-btn span { overflow: hidden; text-overflow: clip; max-width: 100%; }
}