:root {
  color-scheme: light dark;
  --bg: #fff;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #e3e3e3;
  --row-alt: #f8f9fa;
  --row-hover: #eef3fc;
  --thead-bg: #f0f1f3;
  --link: #0645ad;
  --card-bg: #fff;
  --up: #1a7f37;
  --down: #cf222e;
  --flat: #767676;
  --warn: #9a6700;
  --warn-bg: #fff8e6;
  --pick-bg: #f5f3ff;
  --pick-border: #d9d2f7;
  /* categorical chart series (models page) - dataviz skill's validated 8-hue order, slots 1-4;
     assign by series identity and keep the order fixed, never cycled */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --series-4: #eda100;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #e5e5e5;
    --muted: #999;
    --border: #2c2c2c;
    --row-alt: #191919;
    --row-hover: #22293a;
    --thead-bg: #1d1d1d;
    --link: #9ac0ff;
    --card-bg: #1a1a1a;
    --up: #3fb950;
    --down: #f85149;
    --flat: #9a9a9a;
    --warn: #e3b341;
    --warn-bg: #2b2411;
    --pick-bg: #1e1a2e;
    --pick-border: #3a3160;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --series-4: #c98500;
  }
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  width: 100%;
  padding: 1.5rem clamp(1rem, 3vw, 3rem) 3rem;
  color: var(--fg);
  background: var(--bg);
}

h1 { font-size: 1.5rem; margin: 0 0 0.2rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.2rem; }
h3 { font-size: 0.95rem; margin: 1.2rem 0 0.2rem; }
.meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.2rem; }

.nav, .tabs { margin-bottom: 1rem; }
.nav a, .tabs a {
  display: inline-block;
  margin-right: 1.4rem;
  text-decoration: none;
  color: var(--link);
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.nav a.active, .tabs a.active {
  color: var(--fg);
  font-weight: 600;
  border-color: var(--link);
}

.cards { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.card {
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 10px;
  padding: 0.8rem 1.1rem;
  min-width: 0;
  flex: 1 1 140px;
}
.card-label { color: var(--muted); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.03em; }
.card-value { font-size: 1.35rem; font-weight: 600; margin-top: 0.2rem; }
.mean-median-row { margin-top: 0.25rem; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--card-bg);
}

thead th {
  position: sticky;
  top: 0;
  background: var(--thead-bg);
  font-weight: 600;
  text-align: right;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th:first-child, th:nth-child(2) { text-align: left; }

.sortable-col { cursor: pointer; user-select: none; }
.sortable-col:hover { background: var(--row-hover); }
.sortable-col::after { content: "⇅"; color: var(--muted); margin-left: 0.35em; font-size: 0.85em; }
.sortable-col.sort-asc::after { content: "↑"; color: var(--fg); }
.sortable-col.sort-desc::after { content: "↓"; color: var(--fg); }

tbody td {
  padding: 0.6rem 0.9rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td:first-child, td:nth-child(2) { text-align: left; }

tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) { background: var(--row-alt); }
tbody tr:hover { background: var(--row-hover); }

.ticker { font-weight: 600; }
.name { color: var(--muted); font-size: 0.85rem; }
.ticker a, .name a { color: inherit; text-decoration: none; }
.ticker a:hover, .name a:hover { text-decoration: underline; }
.up { color: var(--up); }
.down { color: var(--down); }
.flat { color: var(--flat); }
.hit { color: var(--up); }
.miss { color: var(--down); }

.stale-note {
  display: inline-block;
  color: var(--warn);
  background: var(--warn-bg);
  border-radius: 8px;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.pick-box {
  border: 1px solid var(--pick-border);
  background: var(--pick-bg);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
}
.pick-box-title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.7rem;
}
.pick-list { display: flex; flex-direction: column; gap: 0.5rem; }
.pick {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.pick-rank { color: var(--muted); font-variant-numeric: tabular-nums; width: 1.6rem; }
.pick-rank.up, .pick-rank.down {
  width: auto;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}
.pick .ticker { font-size: 1.05rem; }
.pick .name { flex: 1; min-width: 8rem; }
.pick-probs { font-variant-numeric: tabular-nums; }
.pick-probs .up, .pick-probs .down, .pick-probs .confidence { margin-left: 0.5rem; }
.pick-probs .confidence { color: var(--muted); font-size: 0.85rem; }
.pick-caveat {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
  margin: 0.8rem 0 0;
}
.pick-rationale {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 0.5rem 2.3rem;
}

.empty {
  color: var(--muted);
  padding: 3rem 1rem;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: 12px;
}

.flash {
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  margin-bottom: 1rem;
  font-size: 0.88rem;
}
.flash-error { color: var(--down); background: var(--warn-bg); }
.flash-ok { color: var(--up); background: var(--warn-bg); }

.badge {
  display: inline-block;
  border: 1px solid var(--pick-border);
  background: var(--pick-bg);
  color: var(--link);
  border-radius: 6px;
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.badge-manual { border-color: var(--border); background: var(--row-alt); color: var(--muted); }

.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--fg);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
  cursor: pointer;
}
.btn:hover { background: var(--row-hover); }
.btn-danger { border-color: var(--down); color: var(--down); }
.btn-danger:hover { background: var(--warn-bg); }

.chart-row { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.chart-panel { flex: 1 1 380px; min-width: 0; }
.legend { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; font-size: 0.82rem; }
.legend-item { display: flex; align-items: center; gap: 0.4rem; color: var(--muted); }
.legend-swatch { display: inline-block; width: 0.8rem; height: 0.15rem; border-radius: 2px; }

@media (max-width: 640px) {
  h1 { font-size: 1.25rem; }
  table { font-size: 0.85rem; }
  th, td { padding: 0.5rem 0.6rem; }
}