:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface-1: #fcfcfb;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --up: #006300;
  --down: #d03b3b;
  --accent: #2a78d6;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
  --series-5: #e87ba4;
  --other: #c3c2b7;
  --good: #0ca30c;
  --critical: #d03b3b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface-1: #1a1a19;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --up: #0ca30c;
    --down: #e66767;
    --accent: #3987e5;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
    --series-5: #d55181;
    --other: #52514e;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface-1: #1a1a19;
  --text-primary: #ffffff;
  --text-secondary: #c3c2b7;
  --text-muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --up: #0ca30c;
  --down: #e66767;
  --accent: #3987e5;
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --series-5: #d55181;
  --other: #52514e;
}

* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 1120px;
  padding: 24px 16px 64px;
  background: var(--page);
  color: var(--text-primary);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1 { font-size: 26px; margin: 0; }
h2 { font-size: 19px; margin: 40px 0 8px; }
h3 { font-size: 15px; margin: 0; font-weight: 600; }
.muted { color: var(--text-secondary); margin: 4px 0 12px; }

.notice {
  margin: 16px 0 0;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.filters {
  position: sticky; top: 0; z-index: 5;
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin: 16px -16px 0; padding: 10px 16px;
  background: var(--page);
  border-bottom: 1px solid var(--border);
}
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.segmented button {
  font: inherit; padding: 6px 14px; border: 0; cursor: pointer;
  background: var(--surface-1); color: var(--text-secondary);
}
.segmented button + button { border-left: 1px solid var(--border); }
.segmented button[aria-checked="true"] { background: var(--accent); color: #fff; font-weight: 600; }
select, input {
  font: inherit; color: var(--text-primary);
  background: var(--surface-1);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px;
}

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 12px; }
.tile, .card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.tile .label { color: var(--text-secondary); font-size: 13px; }
.tile .value { font-size: 26px; font-weight: 600; margin-top: 2px; }
.tile .delta { font-size: 13px; margin-top: 2px; color: var(--text-muted); }
.tile.hero .value { font-size: 44px; }
.up { color: var(--up); }
.down { color: var(--down); }

.card-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.chart-box { position: relative; height: 280px; }
.chart-box.tall { height: 360px; }
.legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--text-secondary); }
.legend .key { display: inline-flex; align-items: center; gap: 6px; }
.legend .swatch { width: 12px; height: 12px; border-radius: 3px; }
.legend .line { width: 16px; height: 2px; border-radius: 1px; }

.picker { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.picker input { min-width: 260px; flex: 1 1 260px; max-width: 420px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 6px 4px 10px; border-radius: 999px;
  background: var(--surface-1); border: 1px solid var(--border); font-size: 13px;
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; }
.chip button { border: 0; background: none; color: var(--text-muted); cursor: pointer; font-size: 16px; line-height: 1; padding: 0 4px; }

.compare-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-top: 12px; }
.compare-card h4 { margin: 0 0 8px; font-size: 14px; display: flex; gap: 8px; align-items: baseline; }
.compare-card h4 .line { flex: none; width: 16px; height: 2px; transform: translateY(-3px); }
.compare-card dl { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; margin: 0; font-size: 13px; }
.compare-card dt { color: var(--text-secondary); }
.compare-card dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.search { width: 100%; max-width: 360px; margin-bottom: 8px; }
.table-wrap { overflow-x: auto; background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--grid); white-space: nowrap; }
td:nth-child(2) { white-space: normal; min-width: 200px; }
th { cursor: pointer; user-select: none; color: var(--text-secondary); font-weight: 600; position: sticky; top: 0; background: var(--surface-1); }
th[aria-sort]::after { content: " ▾"; }
th[aria-sort="ascending"]::after { content: " ▴"; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--page); }

.tooltip {
  position: fixed; pointer-events: none; z-index: 20;
  background: var(--surface-1); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 8px 10px; font-size: 13px; min-width: 160px;
}
.tooltip .t-title { color: var(--text-secondary); margin-bottom: 4px; }
.tooltip .t-row { display: flex; align-items: center; gap: 8px; }
.tooltip .t-row .line { width: 12px; height: 2px; flex: none; }
.tooltip .t-row strong { font-variant-numeric: tabular-nums; }
.tooltip .t-row span { color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; max-width: 220px; white-space: nowrap; }

.loading { opacity: 0.5; transition: opacity 0.2s; }

.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.head-actions { display: flex; gap: 8px; align-items: center; }
button.ghost {
  font: inherit; font-size: 13px; cursor: pointer; padding: 6px 10px; border-radius: 8px;
  background: var(--surface-1); color: var(--text-secondary); border: 1px solid var(--border);
}
.bell {
  position: relative; cursor: pointer; width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--surface-1); color: var(--text-secondary); border: 1px solid var(--border);
}
.badge {
  position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--critical); color: #fff; font-size: 11px; font-weight: 700;
  display: grid; place-items: center;
}

.summary { margin-top: 16px; }
.summary h2 { margin: 0 0 4px; }
.summary .headline { font-size: 17px; margin: 0 0 14px; color: var(--text-primary); }
.summary .tiles { margin-bottom: 8px; }
.summary .tile { background: var(--page); }
.need-to-know { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 6px; }
.need-to-know li { display: flex; gap: 10px; align-items: baseline; }
.need-to-know .ico { flex: none; width: 18px; text-align: center; color: var(--text-muted); }
.need-to-know .ico.up { color: var(--up); }
.need-to-know .ico.down { color: var(--down); }
.need-to-know b { font-weight: 600; }
.need-to-know .sub { color: var(--text-secondary); }
.need-to-know .warn { color: var(--down); }

.alert-list { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.alert {
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; border-left: 4px solid var(--border);
}
.alert.is-up { border-left-color: var(--good); }
.alert.is-down { border-left-color: var(--critical); }
.alert.song { cursor: pointer; }
.alert.song:hover { background: var(--page); }
.alert .a-head { display: flex; gap: 8px; align-items: baseline; }
.alert .a-dir { font-weight: 700; font-size: 13px; white-space: nowrap; }
.alert.is-up .a-dir { color: var(--up); }
.alert.is-down .a-dir { color: var(--down); }
.alert .a-subject { font-weight: 600; }
.alert .a-msg { margin: 4px 0 8px; color: var(--text-secondary); font-size: 14px; }
.alert dl { display: grid; grid-template-columns: repeat(4, auto); gap: 2px 14px; margin: 0; font-size: 12px; justify-content: start; }
.alert dt { color: var(--text-muted); }
.alert dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; }
.alert .unread { font-size: 11px; color: #fff; background: var(--accent); border-radius: 4px; padding: 0 5px; margin-left: auto; }
.empty { color: var(--text-secondary); background: var(--surface-1); border: 1px dashed var(--border); border-radius: 12px; padding: 14px; }
details { margin-top: 12px; }
details summary { cursor: pointer; color: var(--text-secondary); margin-bottom: 10px; }
.alert-day { grid-column: 1 / -1; font-size: 13px; color: var(--text-muted); margin-top: 6px; }
.badge[hidden] { display: none; }

/* ---------- song & share pages ---------- */
.hint { color: var(--text-muted); font-size: 13px; margin: -4px 0 8px; }
.more-link, .back, .ghost-link { color: var(--accent); text-decoration: none; font-size: 14px; }
.more-link:hover, .back:hover, .ghost-link:hover { text-decoration: underline; }
.back { display: inline-block; margin: 20px 0 4px; }
.song-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.song-head h2 { margin: 4px 0 0; font-size: 24px; }
#view-song > .card, #view-song > section { margin-top: 12px; }
#view-song .tiles { margin-top: 12px; }
.trend-card { display: grid; gap: 6px; }
.trend-status { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; }
.trend-status .ico { font-size: 18px; }
.trend-status.is-up { color: var(--up); }
.trend-status.is-down { color: var(--down); }
.trend-status.is-normal, .trend-status.is-insufficient { color: var(--text-primary); }
.trend-detail { color: var(--text-secondary); }
.trend-nums { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 6px; }
.trend-nums div { display: grid; }
.trend-nums span { font-size: 12px; color: var(--text-muted); }
.trend-nums b { font-variant-numeric: tabular-nums; font-size: 17px; }
.table-wrap.flat { border: 0; border-radius: 0; background: none; }
.table-wrap.scroll { max-height: 360px; overflow-y: auto; margin-top: 12px; }
#song-periods tbody tr, #song-glance tbody tr { cursor: default; }
.share-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 8px; }
.share-controls .search { margin: 0; }
.check { display: inline-flex; gap: 6px; align-items: center; color: var(--text-secondary); font-size: 14px; }
.share-list { background: var(--surface-1); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.share-row {
  display: grid; grid-template-columns: 40px minmax(140px, 1.3fr) minmax(80px, 1fr) 64px 90px;
  gap: 12px; align-items: center; padding: 8px 14px; border-bottom: 1px solid var(--grid);
  color: var(--text-primary); text-decoration: none; font-size: 14px;
}
.share-row:last-child { border-bottom: 0; }
.share-row:hover, .share-row:focus-visible { background: var(--page); }
.share-row .rank { color: var(--text-muted); text-align: right; font-variant-numeric: tabular-nums; }
.share-row .title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.share-row .track { height: 12px; }
.share-row .bar { height: 12px; min-width: 2px; background: var(--series-1); border-radius: 0 4px 4px 0; }
.share-row .pct, .share-row .streams { text-align: right; font-variant-numeric: tabular-nums; }
.share-row .streams { color: var(--text-secondary); }
@media (max-width: 560px) {
  .share-row { grid-template-columns: 32px 1fr 56px; }
  .share-row .track, .share-row .streams { display: none; }
}
.song-link { color: inherit; font-weight: 600; text-decoration: none; }
.song-link:hover { text-decoration: underline; color: var(--accent); }

/* ---------- overall trend card ---------- */
.trend-tile-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.mini-tabs { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.mini-tabs button {
  font: inherit; font-size: 11px; font-weight: 600; padding: 2px 7px; border: 0; cursor: pointer;
  background: transparent; color: var(--text-muted);
}
.mini-tabs button + button { border-left: 1px solid var(--border); }
.mini-tabs button[aria-selected="true"] { background: var(--accent); color: #fff; }
.trend-tile .value.up { color: var(--up); }
.trend-tile .value.down { color: var(--down); }
.trend-meta { margin-top: 6px; font-size: 12px; color: var(--text-secondary); display: grid; gap: 2px; }