/* spotify_x411k — shared styles.
   Light and dark both supported; dark is the default because the notebooks'
   plots were tuned against a light canvas and read better inverted here. */

:root {
  --green: #1db954;
  --green-dim: #16833c;
  --orange: #ffb347;
  --red: #ff6b6b;
  --blue: #74b9ff;
  --pink: #fd79a8;
  --purple: #a29bfe;
  --teal: #57cc99;
  --yellow: #fdcb6e;

  --bg: #0d0f12;
  --bg-raised: #16191f;
  --bg-input: #1d2128;
  --border: #262b34;
  --border-strong: #363d49;
  --text: #e8eaed;
  --text-dim: #9aa2ad;
  --text-faint: #6b7280;

  --radius: 10px;
  --radius-sm: 6px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fa;
    --bg-raised: #ffffff;
    --bg-input: #f0f2f5;
    --border: #e2e5ea;
    --border-strong: #cbd1d9;
    --text: #16191f;
    --text-dim: #5a6472;
    --text-faint: #8b95a3;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

code, .mono { font-family: var(--mono); font-size: 0.92em; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 10px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar .brand {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}
.topbar .brand span { color: var(--green); }

.topbar nav { display: flex; gap: 4px; flex-wrap: wrap; }
.topbar nav a {
  padding: 5px 11px;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 13px;
  white-space: nowrap;
}
.topbar nav a:hover { background: var(--bg-input); color: var(--text); text-decoration: none; }
.topbar nav a[aria-current="page"] { background: var(--green); color: #06240f; font-weight: 600; }

.topbar .spacer { flex: 1 1 auto; }

.status-pill {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  white-space: nowrap;
}
.status-pill.ok { border-color: var(--green-dim); color: var(--green); }
.status-pill.warn { border-color: var(--orange); color: var(--orange); }
.status-pill.err { border-color: var(--red); color: var(--red); }

main { max-width: 1320px; margin: 0 auto; padding: 22px 20px 80px; }

h1 { font-size: 24px; margin: 6px 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 17px; margin: 30px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 14px; margin: 18px 0 8px; }
.lede { color: var(--text-dim); margin: 0 0 18px; max-width: 78ch; }

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }

.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.tight { gap: 6px; }
.spacer { flex: 1 1 auto; }

/* ── Controls ───────────────────────────────────────────────────────────── */
button, .btn {
  font: inherit;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-input);
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, opacity 0.12s;
}
button:hover:not(:disabled) { border-color: var(--text-faint); }
button:disabled { opacity: 0.42; cursor: not-allowed; }
button.primary { background: var(--green); border-color: var(--green); color: #06240f; font-weight: 600; }
button.primary:hover:not(:disabled) { background: #21d762; }
button.warn { background: var(--orange); border-color: var(--orange); color: #33230a; font-weight: 600; }
button.ghost { background: transparent; }
button.small { padding: 4px 9px; font-size: 12px; }

input[type="text"], input[type="search"], input[type="number"], select, textarea {
  font: inherit;
  font-size: 13px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-input);
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--green) 55%, transparent);
  outline-offset: -1px;
}
textarea { font-family: var(--mono); font-size: 12px; width: 100%; resize: vertical; }
label { font-size: 13px; }

/* Slider rows mirror the notebook's ipywidgets layout: label, slider, value,
   and a "?" that toggles the same help text the widgets carried. */
.slider-row {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(90px, 1.6fr) 52px 24px;
  gap: 8px;
  align-items: center;
  padding: 2px 0;
}
.slider-row > label { color: var(--text-dim); font-size: 12.5px; }
.slider-row output {
  font-family: var(--mono);
  font-size: 12px;
  text-align: right;
  color: var(--text);
}
.slider-row.changed > label { color: var(--green); }
.slider-row.changed output { color: var(--green); font-weight: 600; }

input[type="range"] {
  width: 100%;
  height: 20px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px; background: var(--border-strong);
}
input[type="range"]::-moz-range-track {
  height: 4px; border-radius: 2px; background: var(--border-strong);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; margin-top: -5px;
  border-radius: 50%; background: var(--green); border: none;
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px; border: none; border-radius: 50%; background: var(--green);
}

.help-btn {
  width: 22px; height: 22px; padding: 0;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1;
}
.help-btn:hover { color: var(--green); border-color: var(--green); }
.help-text {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--text-dim);
  background: var(--bg-input);
  border-left: 2px solid var(--green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 8px 11px;
  margin: 2px 0 6px;
}

.group-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin: 14px 0 4px;
}
.group-label:first-child { margin-top: 0; }
.group-label.audio { color: var(--green); }
.group-label.nlp { color: var(--orange); }
.group-label.image { color: var(--red); }
.group-label.meta { color: var(--blue); }

/* ── Details / accordions (the notebook's widgets.Accordion) ─────────────── */
details {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin: 6px 0;
  background: var(--bg-raised);
}
details > summary {
  cursor: pointer;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before {
  content: "›";
  display: inline-block;
  transition: transform 0.15s;
  color: var(--text-faint);
  font-size: 15px;
}
details[open] > summary::before { transform: rotate(90deg); }
details > summary:hover { color: var(--text); }
details > .details-body { padding: 0 12px 12px; }

/* ── Track rows ─────────────────────────────────────────────────────────── */
.track {
  display: flex;
  gap: 11px;
  align-items: center;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}
.track:hover { background: var(--bg-input); }
.track.selectable { cursor: pointer; }
.track.seed { border-color: var(--green-dim); background: color-mix(in srgb, var(--green) 8%, transparent); }

.cover-link {
  display: block;
  flex: 0 0 auto;
  line-height: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.cover-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--green) 55%, transparent);
}
.cover {
  width: 48px; height: 48px; flex: 0 0 48px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--bg-input);
  display: block;
}
.cover.lg { width: 76px; height: 76px; flex-basis: 76px; }
.cover.fill { width: 100%; height: auto; aspect-ratio: 1; flex: none; }
.cover-fallback {
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); font-size: 17px;
}

.track-main { min-width: 0; flex: 1 1 auto; }
.track-title {
  font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.track-title-link {
  color: inherit;
  text-decoration: none;
}
.track-title-link:hover { color: var(--green); text-decoration: underline; }
.track-sub {
  font-size: 12px; color: var(--text-dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.track-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 4px;
}
.track-media {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex: 0 0 auto;
  min-width: 0;
}
.rank {
  font-family: var(--mono); font-size: 12px; color: var(--text-faint);
  flex: 0 0 30px; text-align: right;
}
.score {
  font-family: var(--mono); font-size: 12px; color: var(--blue); font-weight: 600;
}
audio, .preview-audio { height: 32px; max-width: 240px; width: 240px; }

.spotify-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: #0b6b36;
  background: color-mix(in srgb, var(--green) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--green) 45%, transparent);
  border-radius: 999px;
  padding: 2px 9px;
  text-decoration: none;
  white-space: nowrap;
}
.spotify-link:hover {
  background: color-mix(in srgb, var(--green) 24%, transparent);
  color: #064d26;
}
.spotify-link.compact { font-size: 11px; padding: 1px 8px; }
.spotify-glyph { font-size: 11px; line-height: 1; }
.chip.muted { opacity: 0.7; }

.cover-grid-item { min-width: 0; }
.cover-grid-item .cover.fill,
.cover-grid-item .cover-fallback.fill {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
}

.chips { display: flex; gap: 5px; flex-wrap: wrap; }
.chip {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 7px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  white-space: nowrap;
}
.chip.audio { color: var(--green); border-color: var(--green-dim); }
.chip.nlp { color: var(--orange); border-color: color-mix(in srgb, var(--orange) 45%, transparent); }
.chip.image { color: var(--red); border-color: color-mix(in srgb, var(--red) 45%, transparent); }
.chip.meta { color: var(--blue); border-color: color-mix(in srgb, var(--blue) 45%, transparent); }

/* ── Tables ─────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}
table.data th, table.data td {
  text-align: left;
  padding: 5px 9px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data th {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: sticky;
  top: 0;
  background: var(--bg-raised);
}
table.data td.num { font-family: var(--mono); text-align: right; }
table.data tr:last-child td { border-bottom: none; }

.bar-track {
  display: inline-block;
  width: 110px; height: 7px;
  border-radius: 4px;
  background: var(--bg-input);
  overflow: hidden;
  vertical-align: middle;
}
.bar-fill { height: 100%; border-radius: 4px; }

/* ── Charts ─────────────────────────────────────────────────────────────── */
.plot { width: 100%; min-height: 60px; }
.plot-note { font-size: 11.5px; color: var(--text-faint); margin: 2px 0 10px; }

/* ── Notices ────────────────────────────────────────────────────────────── */
.notice {
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  font-size: 13px;
  margin: 10px 0;
  border: 1px solid var(--border-strong);
  background: var(--bg-input);
  color: var(--text-dim);
}
.notice.info { border-left: 3px solid var(--blue); }
.notice.warn { border-left: 3px solid var(--orange); }
.notice.err { border-left: 3px solid var(--red); color: var(--text); }
.notice.ok { border-left: 3px solid var(--green); }
.notice strong { color: var(--text); }
.notice code { background: var(--bg); padding: 1px 5px; border-radius: 3px; }

.empty { color: var(--text-faint); font-size: 13px; padding: 18px 0; text-align: center; }

.spinner {
  display: inline-block;
  width: 13px; height: 13px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -2px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.pager { display: flex; align-items: center; gap: 10px; }
.pager .label { font-family: var(--mono); font-size: 12px; color: var(--text-dim); }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; }
.stat {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}
.stat .k { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.stat .v { font-family: var(--mono); font-size: 18px; font-weight: 600; margin-top: 2px; }

.swatch {
  display: inline-block; width: 14px; height: 14px;
  border-radius: 3px; vertical-align: -2px;
  border: 1px solid var(--border-strong);
}

.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 3px 12px; }
.checkbox-grid label { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text-dim); }

.lyrics {
  max-height: 230px; overflow-y: auto;
  background: var(--bg-input); border-radius: var(--radius-sm);
  padding: 11px 13px;
  font-size: 12.5px; font-style: italic; color: var(--text-dim);
  white-space: pre-wrap;
}

.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: 12.5px; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; font-family: var(--mono); overflow-wrap: anywhere; }

footer {
  border-top: 1px solid var(--border);
  padding: 18px 20px 40px;
  color: var(--text-faint);
  font-size: 12px;
  text-align: center;
}

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

@media (max-width: 640px) {
  .slider-row { grid-template-columns: 1fr 44px 22px; }
  .slider-row > label { grid-column: 1 / -1; }
  audio, .preview-audio { max-width: 100%; width: 100%; }
  .track { flex-wrap: wrap; }
  .track-media { align-items: stretch; width: 100%; padding-left: 41px; }
}