@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a2e;
  --bg-card: #16162a;
  --bg-glass: rgba(22, 22, 42, 0.7);
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --text-primary: #e8e8f0;
  --text-secondary: #8888a8;
  --text-muted: #5a5a78;
  --accent-1: #7c5cfc;
  --accent-2: #c850c0;
  --accent-3: #4fd1c5;
  --accent-4: #f093fb;
  --accent-glow: rgba(124,92,252,0.3);
  --stem-bass: #f97316;
  --stem-drums: #ef4444;
  --stem-guitar: #eab308;
  --stem-other: #8b5cf6;
  --stem-piano: #06b6d4;
  --stem-vocals: #ec4899;
  --stem-full: #7c5cfc;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px var(--accent-glow);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

* { margin:0; padding:0; box-sizing:border-box; }
html { font-size:14px; scroll-behavior:smooth; }
body {
  font-family:'Inter',system-ui,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  height:100vh;
  overflow:hidden;
}

::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--bg-tertiary); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--accent-1); }

/* ─── Layout ─── */
.app { display:flex; flex-direction:column; height:100vh; overflow:hidden; }
.header {
  position:sticky; top:0; z-index:100;
  background:rgba(10,10,15,0.85);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  padding:0.75rem 1.5rem;
  display:flex; align-items:center; gap:1rem;
}
.header .logo {
  font-size:1.3rem; font-weight:800;
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  letter-spacing:-0.5px;
}
.header .logo span { font-weight:400; opacity:0.7; }

/* ─── Tabs ─── */
.tabs {
  display:flex; gap:0.25rem;
  background:var(--bg-secondary);
  border-radius:var(--radius);
  padding:3px; margin-left:auto;
}
.tab-btn {
  padding:0.45rem 1rem;
  border:none; border-radius:var(--radius-sm);
  background:transparent; color:var(--text-secondary);
  font-family:inherit; font-size:0.82rem; font-weight:500;
  cursor:pointer; transition:var(--transition);
  white-space:nowrap;
}
.tab-btn:hover { color:var(--text-primary); background:var(--bg-tertiary); }
.tab-btn.active {
  color:#fff;
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  box-shadow:0 2px 12px var(--accent-glow);
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent-1);
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0;
  margin-top: 0.5rem;
  transition: var(--transition);
}
.link-btn:hover {
  color: var(--accent-2);
}

.sample-audio-hint {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.sample-hint-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.sample-chip-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.25rem 0.65rem;
  border-radius: 12px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.sample-chip-btn:hover {
  border-color: var(--accent-1);
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.sample-grid-yt {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  margin-top: 0.5rem;
}

.sample-card-yt {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.sample-card-yt:hover {
  border-color: var(--accent-1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.sample-card-yt img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.sample-card-yt span {
  padding: 0.4rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sample-card-yt:hover span {
  color: var(--text-primary);
}

.sample-card-singer {
  padding: 0.25rem 0.4rem;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.sample-card-icon {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(255,255,255,0.02);
  min-height: 60px;
  border-bottom: 1px solid var(--border);
}

/* ─── Panels ─── */
.main { flex:1; padding:1rem 1.5rem 5rem; overflow-y:auto; overflow-x:hidden; min-height:0; }
.panel { display:none; animation:fadeIn 0.3s ease; will-change: opacity, transform; transform: translateZ(0); }
.panel.active { display:block; }
.panel.panel-fullscreen.active { display:flex; flex-direction:column; height:calc(100vh - 110px); }
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }

/* ─── Stem Selector ─── */
.stem-bar {
  display:flex; gap:0.5rem; flex-wrap:wrap;
  margin-bottom:1rem; align-items:center;
}
.stem-chip {
  padding:0.35rem 0.85rem;
  border:1px solid var(--border);
  border-radius:20px;
  background:var(--bg-secondary); color:var(--text-secondary);
  font-size:0.78rem; font-weight:500; cursor:pointer;
  transition:var(--transition); text-transform:capitalize;
}
.stem-chip:hover { border-color:var(--border-hover); color:var(--text-primary); }
.stem-chip.active { color:#fff; border-color:transparent; box-shadow:0 2px 10px rgba(0,0,0,0.3); }
.stem-chip:not([data-stem]).active { background:var(--accent-1); }
.stem-chip[data-stem="bass"].active { background:var(--stem-bass); }
.stem-chip[data-stem="drums"].active { background:var(--stem-drums); }
.stem-chip[data-stem="guitar"].active { background:var(--stem-guitar); }
.stem-chip[data-stem="other"].active { background:var(--stem-other); }
.stem-chip[data-stem="piano"].active { background:var(--stem-piano); }
.stem-chip[data-stem="vocals"].active { background:var(--stem-vocals); }
.stem-chip[data-stem="full"].active { background:var(--stem-full); }
.header-brand { display:flex; align-items:center; gap:1.5rem; }
.header-brand .logo { margin:0; }
.artist-selector {
  background:#222;
  color:#eee;
  border:1px solid #444;
  padding:0.4rem 0.8rem;
  border-radius:4px;
  font-size:0.9rem;
  outline:none;
}
.compare-player-slot { margin-top:0.4rem; }
.heatmap-stems-spaced { margin-bottom:0.5rem; }
.cluster-panel { position:relative; }
.cluster-graph-wrap { position:relative; }
.cluster-size-legend {
  position:absolute;
  right:12px;
  bottom:12px;
  z-index:3;
  pointer-events:none;
  max-width:220px;
  padding:0.55rem 0.7rem;
  border:1px solid rgba(255,255,255,0.08);
  border-radius:10px;
  background:rgba(10,12,20,0.72);
  backdrop-filter:blur(10px);
  box-shadow:0 8px 24px rgba(0,0,0,0.28);
}
.cluster-detail-empty-icon { font-size:1.5rem; margin-bottom:0.5rem; }
.cluster-detail-empty-text { font-size:0.7rem; color:var(--text-muted); }
.cluster-custom-panel {
  display:none;
  position:absolute;
  left:16px;
  top:58px;
  z-index:8;
  width:320px;
  padding:0.65rem 0.7rem;
  border:1px solid rgba(255,255,255,0.08);
  border-radius:10px;
  background:rgba(12,14,24,0.94);
  backdrop-filter:blur(12px);
  box-shadow:0 12px 28px rgba(0,0,0,0.32);
  overflow:hidden;
}

/* ─── Cards Grid ─── */
.song-grid {
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:0.75rem;
}
.song-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1rem;
  cursor:pointer; transition:var(--transition);
  position:relative; overflow:hidden;
}
.song-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  opacity:0; transition:var(--transition);
}
.song-card:hover { border-color:var(--border-hover); transform:translateY(-2px); box-shadow:var(--shadow); }
.song-card:hover::before { opacity:1; }
.song-card.selected { border-color:var(--accent-1); box-shadow:var(--shadow-glow); }
.song-card.selected::before { opacity:1; }
.song-card .title { font-weight:600; font-size:0.95rem; margin-bottom:0.3rem; line-height:1.3; }
.song-card .meta { font-size:0.75rem; color:var(--text-secondary); }
.song-card .meta span { margin-right:0.6rem; }
.song-card .mood-badge {
  display:inline-block; margin-top:0.4rem;
  padding:0.15rem 0.5rem; border-radius:10px;
  background:rgba(124,92,252,0.15); color:var(--accent-1);
  font-size:0.7rem; font-weight:500;
}

/* ─── Audio Player ─── */
.player-bar {
  position:fixed; bottom:0; left:0; right:0; z-index:200;
  background:rgba(10,10,15,0.95);
  backdrop-filter:blur(24px);
  border-top:1px solid var(--border);
  padding:0.5rem 1.5rem;
  display:flex; align-items:center; gap:1rem;
  transform:translateY(100%); transition:transform 0.4s ease;
}
.player-bar.visible { transform:none; }
.player-bar .now-playing { min-width:160px; }
.player-bar .now-playing .np-title { font-weight:600; font-size:0.82rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:180px; }
.player-bar .now-playing .np-stem { font-size:0.7rem; color:var(--text-secondary); text-transform:capitalize; }

/* ─── Waveform ─── */
.waveform-wrap {
  flex:1; min-width:0; max-width:500px;
  height:48px; position:relative;
  cursor:pointer;
  border-radius:var(--radius-sm);
  overflow:hidden;
  background:var(--bg-secondary);
}
.waveform-canvas {
  width:100%; height:100%;
  display:block;
}
.waveform-progress {
  position:absolute; top:0; left:0; bottom:0;
  background:rgba(124,92,252,0.12);
  pointer-events:none; transition:width 0.1s linear;
}
.waveform-time {
  position:absolute; bottom:2px; right:6px;
  font-family:'JetBrains Mono',monospace;
  font-size:0.65rem; color:var(--text-muted);
  pointer-events:none;
}

.player-controls {
  display:flex; align-items:center; gap:0.5rem;
}
.ctrl-btn {
  width:36px; height:36px; border:none; border-radius:50%;
  background:var(--accent-1); color:#fff;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition:var(--transition);
  font-size:1rem;
}
.ctrl-btn:hover { background:var(--accent-2); transform:scale(1.05); }

.player-stem-btns { display:flex; gap:0.3rem; flex-wrap:wrap; }
.player-stem-btn {
  padding:0.25rem 0.55rem; border:1px solid var(--border); border-radius:6px;
  background:transparent; color:var(--text-secondary);
  font-size:0.68rem; font-weight:500; cursor:pointer; transition:var(--transition);
  text-transform:capitalize; font-family:inherit;
}
.player-stem-btn:hover { border-color:var(--border-hover); color:var(--text-primary); }
.player-stem-btn.active { background:var(--accent-1); color:#fff; border-color:var(--accent-1); }

/* ─── Similarity Panel ─── */
.sim-layout { display:grid; grid-template-columns:280px 1fr; gap:1rem; min-height:70vh; }
@media(max-width:900px) { .sim-layout { grid-template-columns:1fr; } }
.sim-sidebar {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:0.75rem;
  max-height:75vh; overflow-y:auto;
}
.sim-sidebar .search-box {
  width:100%; padding:0.5rem 0.75rem;
  border:1px solid var(--border); border-radius:var(--radius-sm);
  background:var(--bg-secondary); color:var(--text-primary);
  font-family:inherit; font-size:0.82rem;
  margin-bottom:0.5rem; outline:none;
}
.sim-sidebar .search-box:focus { border-color:var(--accent-1); }
.sim-song-item {
  display:flex; align-items:center; gap:0.5rem;
  padding:0.45rem 0.5rem; border-radius:var(--radius-sm);
  cursor:pointer; transition:var(--transition);
  border:1px solid transparent; font-size:0.8rem;
}
.sim-song-item:hover { background:var(--bg-tertiary); }
.sim-song-item.active { background:var(--bg-tertiary); border-color:var(--accent-1); }
.sim-song-item .idx { font-family:'JetBrains Mono'; font-size:0.68rem; color:var(--text-muted); min-width:1.4rem; }
.sim-song-item .name { font-weight:500; flex:1; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sim-content { display:flex; flex-direction:column; gap:1rem; }

/* ─── Similarity Results ─── */
.sim-results-header {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:1rem;
}
.sim-results-header h2 { font-size:1.1rem; font-weight:700; margin-bottom:0.3rem; }
.sim-results-header .sub { font-size:0.8rem; color:var(--text-secondary); }

.sim-results-grid {
  display:grid; grid-template-columns:repeat(4, 1fr);
  gap:0.75rem;
}
.sim-result-card {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:1rem;
  transition:var(--transition); cursor:pointer;
}
.sim-result-card:hover { border-color:var(--border-hover); transform:translateY(-1px); }
.sim-result-card .rank { font-family:'JetBrains Mono'; font-size:0.72rem; color:var(--text-muted); }
.sim-result-card .res-title { font-weight:600; font-size:0.9rem; margin:0.2rem 0; }
.sim-result-card .res-meta { font-size:0.72rem; color:var(--text-secondary); margin-bottom:0.4rem; }

.sim-bar-container { display:flex; align-items:center; gap:0.5rem; margin-bottom:0.25rem; }
.sim-bar-label { font-size:0.68rem; color:var(--text-secondary); min-width:48px; text-transform:capitalize; }
.sim-bar-track { flex:1; height:5px; background:var(--bg-tertiary); border-radius:3px; overflow:hidden; }
.sim-bar-fill { height:100%; border-radius:3px; transition:width 0.5s ease; }
.sim-bar-value { font-family:'JetBrains Mono'; font-size:0.7rem; min-width:40px; text-align:right; font-weight:500; }

/* ─── Stem Contribution ─── */
.stem-contrib-section {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:1rem;
}
.stem-contrib-section h3 { font-size:0.9rem; font-weight:600; margin-bottom:0.75rem; }

/* ─── Heatmap ─── */
.heatmap-split {
  display:grid;
  grid-template-columns:1fr 420px;
  gap:1rem;
  height:calc(100vh - 160px);
}
@media(max-width:900px) { .heatmap-split { grid-template-columns:1fr; height:auto; } }
.heatmap-left {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:0.75rem;
  display:flex; align-items:flex-start; justify-content:flex-start;
  flex-direction:column;
  overflow:auto;
  min-height:0;
}
.heatmap-right {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:1rem;
  overflow-y:auto;
}
.heatmap-left > div {
  max-width:none;
}
.heatmap-detail-empty {
  display:flex; align-items:center; justify-content:center;
  height:100%; color:var(--text-muted);
  font-size:0.85rem; text-align:center; line-height:1.8;
}
.heatmap-right.locked { border-color:var(--accent-1); box-shadow:0 0 12px var(--accent-glow); }
.heatmap-detail-header { margin-bottom:0.75rem; }
.heatmap-detail-header h3 { font-size:0.92rem; font-weight:700; line-height:1.3; }
.heatmap-detail-header .sub { font-size:0.72rem; color:var(--text-secondary); }
.heatmap-detail-score {
  text-align:center; margin:0.75rem 0;
}
.heatmap-detail-score .big {
  font-size:2.2rem; font-weight:900;
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  background-clip:text;
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.heatmap-detail-score .label { font-size:0.7rem; color:var(--text-secondary); }

/* ─── Cluster Panel ─── */
.cluster-toolbar {
  display:flex; align-items:center; gap:1rem; flex-wrap:wrap; margin-bottom:0.5rem;
}
.cluster-toolbar .stem-bar { margin-bottom:0; }
.cluster-slider-wrap {
  flex:1; display:flex; align-items:center; gap:0.5rem;
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:0.35rem 0.75rem;
  font-size:0.78rem; color:var(--text-secondary);
}
.cluster-slider-wrap input[type="range"] {
  flex:1; accent-color:var(--accent-1);
}
.cluster-slider-wrap span {
  font-family:'JetBrains Mono',monospace; font-weight:600;
  color:var(--text-primary); min-width:36px;
}
.cluster-actions { margin-left:auto; }
.cluster-split {
  display:grid; grid-template-columns:1fr 340px;
  gap:1rem; flex:1; min-height:0;
}
@media(max-width:900px) { .cluster-split { grid-template-columns:1fr; } }
.cluster-graph-wrap {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); position:relative; overflow:hidden;
}
.cluster-graph-wrap svg { width:100%; height:100%; display:block; }
.cluster-detail {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:1rem; overflow-y:auto;
}
.cluster-detail-empty {
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  height:100%; color:var(--text-muted);
  font-size:0.85rem; text-align:center; line-height:1.8;
}
.cluster-detail.has-selection { border-color:var(--accent-1); box-shadow:0 0 12px var(--accent-glow); }
.cluster-legend {
  display:flex; flex-wrap:wrap; gap:0.5rem; margin-bottom:0.75rem;
}
.cluster-legend-item {
  display:flex; align-items:center; gap:0.3rem;
  font-size:0.7rem; color:var(--text-secondary);
}
.cluster-legend-dot {
  width:10px; height:10px; border-radius:50%;
}

/* ─── Cluster Search ─── */
.cluster-search-wrap {
  position: relative;
}

.search-btn {
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.cluster-search-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  z-index: 1000;
  overflow: hidden;
  animation: fadeIn 0.2s ease;
}

.cluster-search-dropdown.active {
  display: block;
}

.cluster-search-input-wrap {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.cluster-search-input-wrap input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.cluster-search-input-wrap input:focus {
  border-color: var(--accent-1);
}

.cluster-search-results {
  max-height: 300px;
  overflow-y: auto;
}

.search-result-item {
  padding: 0.6rem 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

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

.search-result-item:hover {
  background: var(--bg-tertiary);
}

.search-result-item.selected {
  background: rgba(124, 92, 252, 0.15);
  border-left: 3px solid var(--accent-1);
}

.search-result-item .song-name {
  font-weight: 600;
  font-size: 0.85rem;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-result-item .song-meta {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.cluster-song-row {
  display:flex; align-items:center; gap:0.5rem;
  padding:0.4rem 0.5rem; border-radius:var(--radius-sm);
  border-bottom:1px solid var(--border); transition:var(--transition);
}
.cluster-song-row:hover { background:var(--bg-tertiary); }
.cluster-song-row .rank {
  font-family:'JetBrains Mono',monospace; font-size:0.68rem;
  color:var(--text-muted); min-width:1.4rem;
}
.cluster-song-row .name { flex:1; font-size:0.8rem; font-weight:500; }
.cluster-song-row .cluster-badge {
  padding:0.1rem 0.4rem; border-radius:8px;
  font-size:0.62rem; font-weight:600; color:#fff;
}
/* D3 brush */
.selection { fill:rgba(124,92,252,0.15); stroke:var(--accent-1); stroke-width:1.5; stroke-dasharray:4 2; }

/* ─── Compare Panel ─── */
.compare-controls-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:0.95rem;
}
.compare-controls-head h2 {
  font-size:1.02rem;
  font-weight:700;
  margin-bottom:0.2rem;
}
.compare-controls-head .sub {
  font-size:0.78rem;
  color:var(--text-secondary);
}
.compare-controls-row {
  display:grid;
  grid-template-columns:minmax(0,1fr) auto auto;
  gap:0.45rem;
  margin-top:0.75rem;
}
#compare-add-select {
  width:100%;
  background:var(--bg-secondary);
  color:var(--text-primary);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:0.45rem 0.55rem;
  font-family:inherit;
  font-size:0.82rem;
}
#compare-add-select:disabled {
  opacity:0.45;
  cursor:not-allowed;
}
.compare-limit-note {
  margin-top:0.5rem;
  font-size:0.72rem;
  color:var(--text-secondary);
}
.compare-selected-list {
  margin-top:0.6rem;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:0.55rem;
}
.compare-song-pill {
  background:var(--bg-secondary);
  border:1px solid var(--border);
  border-radius:10px;
  padding:0.5rem;
  display:flex;
  flex-direction:column;
  gap:0.4rem;
}
.compare-song-pill.in-focus {
  border-color:var(--accent-1);
  box-shadow:0 0 0 1px rgba(124,92,252,0.3);
}
.compare-song-pill-head {
  display:flex;
  align-items:center;
  gap:0.45rem;
}
.compare-song-pill-rank {
  width:1.35rem;
  height:1.35rem;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(124,92,252,0.18);
  color:#c7b8ff;
  font-family:'JetBrains Mono',monospace;
  font-size:0.66rem;
  font-weight:600;
}
.compare-song-pill-name {
  font-size:0.78rem;
  font-weight:600;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.compare-song-pill-actions {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:0.35rem;
}
.compare-chip-remove {
  width:24px;
  height:24px;
  border:none;
  border-radius:6px;
  background:rgba(239,68,68,0.15);
  color:#fca5a5;
  cursor:pointer;
  font-size:0.74rem;
  transition:var(--transition);
}
.compare-chip-remove:hover { background:rgba(239,68,68,0.28); color:#fff; }
.compare-chip-remove:disabled {
  opacity:0.35;
  cursor:not-allowed;
}

.compare-summary-grid {
  margin:0.85rem 0;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0.65rem;
}
.compare-stat-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:10px;
  padding:0.75rem;
}
.compare-stat-label {
  font-size:0.68rem;
  color:var(--text-muted);
  text-transform:uppercase;
  letter-spacing:0.4px;
}
.compare-stat-value {
  margin-top:0.3rem;
  font-family:'JetBrains Mono',monospace;
  font-size:1.35rem;
  font-weight:800;
  line-height:1.15;
}
.compare-stat-sub {
  margin-top:0.4rem;
  font-size:0.72rem;
  color:var(--text-secondary);
  line-height:1.4;
}

.compare-matrix-layout {
  display:grid;
  grid-template-columns:1fr 360px;
  gap:0.9rem;
  align-items:start;
}
.compare-matrix-card,
.compare-pair-card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:0.9rem;
}
.compare-matrix-head h3 {
  font-size:0.9rem;
  font-weight:700;
  margin-bottom:0.2rem;
}
.compare-matrix-head .sub {
  font-size:0.74rem;
  color:var(--text-secondary);
}
.compare-stem-bar {
  margin-top:0.55rem;
  display:flex;
  flex-wrap:wrap;
  gap:0.35rem;
}
.compare-stem-chip {
  border:1px solid var(--border);
  background:var(--bg-secondary);
  color:var(--text-secondary);
  border-radius:999px;
  padding:0.28rem 0.58rem;
  font-size:0.68rem;
  font-weight:600;
  text-transform:capitalize;
  cursor:pointer;
  transition:var(--transition);
}
.compare-stem-chip:hover {
  color:var(--text-primary);
  border-color:var(--border-hover);
}
.compare-stem-chip.active {
  color:#fff;
  border-color:transparent;
  box-shadow:0 2px 10px rgba(0,0,0,0.3);
}
.compare-stem-chip[data-stem="bass"].active { background:var(--stem-bass); }
.compare-stem-chip[data-stem="drums"].active { background:var(--stem-drums); }
.compare-stem-chip[data-stem="guitar"].active { background:var(--stem-guitar); }
.compare-stem-chip[data-stem="other"].active { background:var(--stem-other); }
.compare-stem-chip[data-stem="piano"].active { background:var(--stem-piano); }
.compare-stem-chip[data-stem="vocals"].active { background:var(--stem-vocals); }
.compare-stem-chip[data-stem="full"].active { background:var(--stem-full); }
.compare-matrix-scroll {
  margin-top:0.65rem;
  overflow:auto;
}
.compare-matrix-grid {
  display:grid;
  grid-template-columns:220px repeat(var(--compare-count), minmax(92px,1fr));
  gap:0.35rem;
  min-width:max-content;
}
.compare-matrix-cell {
  min-height:44px;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--bg-secondary);
  color:var(--text-primary);
  font-size:0.72rem;
  padding:0.35rem;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
}
.compare-matrix-corner {
  background:transparent;
  border-style:dashed;
  color:var(--text-muted);
  font-weight:600;
}
.compare-matrix-head,
.compare-matrix-row {
  justify-content:flex-start;
  padding:0.45rem 0.5rem;
  font-weight:600;
  line-height:1.25;
}
.compare-matrix-head {
  background:rgba(124,92,252,0.1);
  border-color:rgba(124,92,252,0.24);
}
.compare-matrix-row {
  background:rgba(255,255,255,0.02);
  color:var(--text-secondary);
}
.compare-matrix-diag {
  color:var(--text-muted);
  font-family:'JetBrains Mono',monospace;
}
button.compare-matrix-value {
  cursor:pointer;
  font-family:'JetBrains Mono',monospace;
  font-size:0.78rem;
  font-weight:700;
  color:var(--sim-color);
  background:color-mix(in srgb, var(--sim-color) calc(var(--sim-alpha) * 100%), #0a0a0f);
  border:1px solid color-mix(in srgb, var(--sim-color) 38%, transparent);
  transition:var(--transition);
}
button.compare-matrix-value:hover {
  transform:translateY(-1px);
  filter:brightness(1.08);
}
button.compare-matrix-value.active {
  box-shadow:0 0 0 2px rgba(255,255,255,0.16), 0 0 0 4px rgba(124,92,252,0.2);
}

.compare-pair-head h3 {
  font-size:0.85rem;
  line-height:1.35;
}
.compare-pair-score {
  margin-top:0.35rem;
  font-family:'JetBrains Mono',monospace;
  font-size:2.2rem;
  font-weight:900;
  line-height:1;
}
.compare-pair-score-label {
  margin-top:0.15rem;
  font-size:0.7rem;
  color:var(--text-secondary);
}

/* ─── Upload Panel ─── */
.upload-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}
.upload-container h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.upload-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.upload-form label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  gap: 0.35rem;
}
.upload-input {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition);
}
.upload-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 2px rgba(124,92,252,0.2);
}
.upload-status {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: var(--radius-sm);
  display: none;
}

.compare-pair-song-grid {
  margin-top:0.7rem;
  display:grid;
  grid-template-columns:1fr;
  gap:0.45rem;
}
.compare-pair-song {
  background:var(--bg-secondary);
  border:1px solid var(--border);
  border-radius:8px;
  padding:0.55rem;
}
.compare-pair-song-name {
  font-size:0.77rem;
  font-weight:700;
}
.compare-pair-song-meta {
  margin:0.2rem 0 0.45rem;
  font-size:0.68rem;
  color:var(--text-secondary);
}
.compare-pair-stems {
  margin-top:0.75rem;
  display:grid;
  gap:0.42rem;
}
.compare-pair-stem-row {
  display:grid;
  grid-template-columns:52px 1fr 48px;
  gap:0.4rem;
  align-items:center;
}
.compare-pair-stem-row.muted { opacity:0.35; }
.compare-pair-stem-name {
  font-size:0.68rem;
  font-weight:700;
  text-transform:capitalize;
}
.compare-pair-stem-track {
  height:8px;
  border-radius:999px;
  background:var(--bg-tertiary);
  overflow:hidden;
}
.compare-pair-stem-fill {
  height:100%;
  border-radius:999px;
}
.compare-pair-stem-val {
  font-family:'JetBrains Mono',monospace;
  font-size:0.68rem;
  font-weight:600;
  text-align:right;
}

.compare-empty-state {
  border:1px dashed var(--border-hover);
  border-radius:10px;
  padding:1rem;
  text-align:center;
  font-size:0.8rem;
  color:var(--text-muted);
}

@media(max-width:1100px) {
  .compare-summary-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .compare-matrix-layout { grid-template-columns:1fr; }
}
@media(max-width:700px) {
  .compare-controls-row { grid-template-columns:1fr; }
  .compare-summary-grid { grid-template-columns:1fr; }
  .compare-selected-list { grid-template-columns:1fr; }
  .compare-matrix-grid { grid-template-columns:160px repeat(var(--compare-count), minmax(86px,1fr)); }
}

/* ─── Popup Modal ─── */
.modal-overlay {
  position:fixed; inset:0; z-index:500;
  background:rgba(0,0,0,0.6);
  backdrop-filter:blur(6px);
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none;
  transition:opacity 0.25s ease;
  will-change: opacity;
}
.modal-overlay.open { opacity:1; pointer-events:auto; }
.modal {
  background:var(--bg-card);
  border:1px solid var(--border-hover);
  border-radius:var(--radius-lg);
  padding:1.5rem;
  max-width:560px; width:90%;
  max-height:85vh; overflow-y:auto;
  box-shadow:0 16px 64px rgba(0,0,0,0.6), 0 0 40px var(--accent-glow);
  transform:scale(0.92) translateY(12px) translateZ(0);
  transition:transform 0.3s ease;
  will-change: transform;
}
.modal-overlay.open .modal { transform:none; }
.modal-close {
  float:right; background:none; border:none;
  color:var(--text-muted); font-size:1.3rem;
  cursor:pointer; padding:0.2rem 0.5rem;
  border-radius:6px; transition:var(--transition);
}
.modal-close:hover { color:var(--text-primary); background:var(--bg-tertiary); }
.modal h2 { font-size:1.05rem; font-weight:700; margin-bottom:0.2rem; }
.modal .modal-sub { font-size:0.78rem; color:var(--text-secondary); margin-bottom:1rem; }
.modal-section { margin-top:1rem; }
.modal-section h4 { font-size:0.8rem; font-weight:600; color:var(--text-secondary); margin-bottom:0.5rem; text-transform:uppercase; letter-spacing:0.5px; }
.modal-actions { display:flex; gap:0.4rem; flex-wrap:wrap; margin-top:0.75rem; }
.modal-action-btn {
  padding:0.35rem 0.75rem;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--bg-secondary); color:var(--text-primary);
  font-family:inherit; font-size:0.78rem; font-weight:500;
  cursor:pointer; transition:var(--transition);
}
.modal-action-btn:hover { background:var(--accent-1); color:#fff; border-color:var(--accent-1); }
.modal-action-btn.primary {
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  color:#fff; border:none;
}
.modal-action-btn:disabled {
  opacity:0.45;
  cursor:not-allowed;
}
.modal-action-btn:disabled:hover {
  background:var(--bg-secondary);
  color:var(--text-primary);
  border-color:var(--border);
}

/* ─── Play Buttons ─── */
.play-btn {
  display:inline-flex; align-items:center; gap:0.3rem;
  padding:0.25rem 0.5rem; border:1px solid var(--border);
  border-radius:6px; background:transparent; color:var(--text-secondary);
  font-family:inherit; font-size:0.7rem; cursor:pointer; transition:var(--transition);
}
.play-btn:hover { background:rgba(255,255,255,0.15); border-color:rgba(255,255,255,0.25); color:#fff; }
.play-btn svg { width:10px; height:10px; }

/* ─── Loading ─── */
.loader {
  display:flex; align-items:center; justify-content:center;
  min-height:60vh; flex-direction:column; gap:1rem;
}
.loader .spinner {
  width:40px; height:40px; border:3px solid var(--bg-tertiary);
  border-top-color:var(--accent-1); border-radius:50%;
  animation:spin 0.8s linear infinite;
}
@keyframes spin { to{transform:rotate(360deg)} }
.loader p { color:var(--text-secondary); font-size:0.85rem; }
.section-title { font-size:1rem; font-weight:700; margin-bottom:0.75rem; }

/* \u2500\u2500\u2500 Upload Panel \u2500\u2500\u2500 */
.upload-page {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  align-items: start;
}
@media (max-width: 900px) {
  .upload-page { grid-template-columns: 1fr; }
}

.upload-main { display: flex; flex-direction: column; gap: 1rem; }

.upload-header { margin-bottom: 0.25rem; }
.upload-header h2 {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 0.3rem;
}
.upload-header .sub { color: var(--text-secondary); font-size: 0.88rem; }

/* Source toggle tabs */
.source-tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.35rem;
  width: fit-content;
}
.source-tab {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.45rem 1.1rem;
  border: none; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-secondary);
  font-family: inherit; font-size: 0.82rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
}
.source-tab:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.source-tab.active {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #fff;
  box-shadow: 0 2px 10px var(--accent-glow);
}
.source-tab-icon { font-size: 0.9rem; }

/* Step cards */
.upload-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
  animation: fadeIn 0.3s ease;
}
.upload-step:not(.step-locked):hover {
  border-color: var(--border-hover);
}
.step-locked { opacity: 0.95; }

.upload-step-header {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 1.25rem;
}
.step-badge {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  box-shadow: 0 2px 10px var(--accent-glow);
}
.upload-step-header h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.15rem;
}
.step-badge-sub {
  display: inline-block;
  font-size: 0.68rem; font-weight: 600;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: rgba(124,92,252,0.15);
  color: var(--accent-1);
  margin-left: 0.4rem;
  vertical-align: middle;
}
.step-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Drop zone */
.drop-zone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.4rem;
  padding: 2rem 1rem;
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent-1);
  background: rgba(124,92,252,0.06);
  box-shadow: 0 0 0 3px rgba(124,92,252,0.12);
}
.drop-zone-icon { font-size: 2rem; margin-bottom: 0.25rem; }
.drop-zone-text { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.drop-zone-sub { font-size: 0.75rem; color: var(--text-muted); }
.drop-zone-filename {
  font-size: 0.78rem; font-weight: 600;
  color: var(--accent-3);
  margin-top: 0.25rem;
  min-height: 1rem;
}

/* Trim row */
.trim-row {
  display: flex; align-items: flex-end; gap: 0.75rem; flex-wrap: wrap;
  margin-bottom: 1.25rem;
}
.trim-row .upload-field-group { margin-bottom: 0; }
.trim-input { width: 100px; text-align: center; font-family: 'JetBrains Mono', monospace; }
.trim-arrow { color: var(--text-muted); font-size: 1.2rem; padding-bottom: 0.5rem; }
.trim-duration {
  padding: 0.45rem 0.75rem;
  background: rgba(124,92,252,0.1);
  color: var(--accent-1);
  border-radius: var(--radius-sm);
  font-size: 0.78rem; font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
  align-self: flex-end;
}

/* Fields & inputs */
.upload-row {
  display: flex; gap: 1rem; flex-wrap: wrap;
}
.upload-field-group {
  display: flex; flex-direction: column; gap: 0.45rem;
  margin-bottom: 1.1rem;
}
.upload-field-group label {
  font-size: 0.78rem; font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
}
.upload-input {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit; font-size: 0.88rem;
  transition: var(--transition);
  outline: none;
}
.upload-input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 2px rgba(124,92,252,0.2);
}
.upload-input::placeholder { color: var(--text-muted); }

/* Action buttons */
.upload-action-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary); color: var(--text-primary);
  font-family: inherit; font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: var(--transition);
}
.upload-action-btn:hover:not(:disabled) {
  border-color: var(--accent-1);
  color: var(--accent-1);
}
.upload-action-btn.primary-btn {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #fff; border: none;
  box-shadow: 0 3px 12px var(--accent-glow);
}
.upload-action-btn.primary-btn:hover:not(:disabled) {
  opacity: 0.88;
  box-shadow: 0 5px 20px var(--accent-glow);
  transform: translateY(-1px);
  color: #fff;
  border: none;
}
.upload-action-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* Status messages */
.upload-status {
  display: none;
  margin-top: 0.85rem;
  padding: 0.65rem 0.9rem;
  font-size: 0.82rem; font-weight: 500;
  border-radius: var(--radius-sm);
  background: rgba(79,209,197,0.08);
  border: 1px solid rgba(79,209,197,0.2);
  color: var(--accent-3);
  animation: fadeIn 0.25s ease;
}
.upload-status--error {
  background: rgba(239,68,68,0.08) !important;
  border-color: rgba(239,68,68,0.2) !important;
  color: #ef4444 !important;
}

/* Audio preview player */
.upload-audio-preview {
  margin-top: 1rem;
  width: 100%; height: 40px;
  border-radius: var(--radius-sm);
  outline: none;
}

/* Sidebar: My Library */
.upload-sidebar {
  position: sticky; top: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}
.upload-sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.upload-sidebar-header h3 { font-size: 0.95rem; font-weight: 700; }
.upload-sidebar-count {
  font-size: 0.72rem; font-weight: 700;
  background: rgba(124,92,252,0.15);
  color: var(--accent-1);
  padding: 0.1rem 0.45rem;
  border-radius: 10px;
  font-family: 'JetBrains Mono', monospace;
}

.added-songs-grid { display: flex; flex-direction: column; gap: 0.55rem; }

/* Added song card */
.added-song-card {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  gap: 0.75rem;
  transition: var(--transition);
}
.added-song-card:hover { border-color: var(--border-hover); background: var(--bg-tertiary); }
.added-song-info { flex: 1; min-width: 0; }
.added-song-title { font-weight: 600; font-size: 0.82rem; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.added-song-meta  { font-size: 0.7rem; color: var(--text-secondary); margin-top: 0.15rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.added-song-trim {
  opacity: 0.6;
  margin-left: 0.3rem;
  font-weight: 400;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.64rem;
}

.added-song-actions {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}

.icon-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.75rem;
}
.icon-btn:hover { color: var(--text-primary); border-color: var(--border-hover); }

.play-btn-small:hover { background: rgba(79,209,197,0.15); color: var(--accent-3); border-color: var(--accent-3); }
.edit-btn-small:hover { background: rgba(124,92,252,0.15); color: var(--accent-1); border-color: var(--accent-1); }
.delete-btn-small:hover { background: rgba(239,68,68,0.15); color: #ef4444; border-color: #ef4444; }

.added-songs-empty { color: var(--text-muted); font-size: 0.8rem; padding: 0.5rem 0; text-align: center; font-style: italic; }

/* Inline Edit Form */
.added-song-card.editing {
  background: var(--bg-card);
  border-color: var(--accent-1);
  box-shadow: 0 4px 12px rgba(124,92,252,0.1);
}
.added-song-edit-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.upload-input.small {
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
}
.added-song-edit-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 0.25rem;
}
.action-link {
  background: none;
  border: none;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.action-link.save { color: var(--accent-3); }
.action-link.cancel { color: var(--text-muted); }
.action-link:hover { opacity: 0.8; text-decoration: underline; }

/* Delete button */
.delete-btn {
  flex-shrink: 0;
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem; font-weight: 600;
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: var(--radius-sm);
  background: rgba(239,68,68,0.08);
  color: #ef4444; cursor: pointer;
  transition: var(--transition);
}
.delete-btn:hover { background: rgba(239,68,68,0.2); border-color: #ef4444; }