:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --hover: #f1f5f9;
  --accent: #2563eb;
  --up: #16a34a;
  --down: #dc2626;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --card: #121826;
    --text: #e5e7eb;
    --muted: #8b95a7;
    --border: #1f2737;
    --hover: #1a2233;
    --accent: #60a5fa;
    --up: #22c55e;
    --down: #f87171;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 24px;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding-block: 16px;
}

.brand { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }

.status { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}
.pill::before { content: "● "; color: var(--muted); }
.pill.open::before { color: var(--up); }

.live-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  border-radius: 50%;
  background: var(--up);
  vertical-align: middle;
}

td.flash-up { animation: flash-up 0.8s; }
td.flash-down { animation: flash-down 0.8s; }
@keyframes flash-up { from { background: color-mix(in srgb, var(--up) 25%, transparent); } }
@keyframes flash-down { from { background: color-mix(in srgb, var(--down) 25%, transparent); } }

.banner {
  max-width: 1200px;
  margin: 0 auto 16px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}

.layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .chart-card { order: -1; }
}

.watchlists { display: grid; gap: 16px; align-content: start; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  min-width: 0;
}

h2 { margin: 0 0 8px; font-size: 15px; }

table { width: 100%; border-collapse: collapse; }
td { padding: 8px 6px; border-top: 1px solid var(--border); font-variant-numeric: tabular-nums; }
tr:first-child td { border-top: 0; }
td:not(:first-child) { text-align: right; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--hover); }
tbody tr.selected { background: var(--hover); box-shadow: inset 3px 0 0 var(--accent); }
.symbol { font-weight: 600; }

.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--muted); font-size: 12px; }

.chart-head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: flex-start;
}
.chart-head h2 { font-size: 18px; margin: 0; }
.chart-price { font-size: 20px; font-variant-numeric: tabular-nums; }
.chart-price #chart-change { font-size: 14px; }

.tabs { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.tabs button {
  border: 0;
  padding: 6px 12px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}
.tabs button.active { background: var(--accent); color: #fff; }

#chart { height: 420px; margin-top: 12px; }
@media (max-width: 800px) { #chart { height: 300px; } }

footer { max-width: 1200px; margin: 16px auto 0; }