:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --green: #26a69a;
  --green-bg: rgba(38, 166, 154, 0.12);
  --red: #ef5350;
  --red-bg: rgba(239, 83, 80, 0.12);
  --gold: #b8860b;
  --chip-active: #1a1a1a;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1.25rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold);
  text-transform: uppercase;
}

.topbar-meta {
  font-size: 0.7rem;
  color: var(--muted);
}

.page {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
  flex: 1;
}

.quote-block {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.25rem;
  margin-bottom: 0.85rem;
}

.instrument-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.instrument-sub {
  margin-top: 0.2rem;
  font-size: 0.72rem;
  color: var(--muted);
}

.quote-right {
  text-align: right;
}

.last-price {
  font-size: 1.55rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.day-change {
  margin-top: 0.15rem;
  font-size: 0.88rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.day-change.up {
  color: var(--green);
}

.day-change.down {
  color: var(--red);
}

.day-change.flat {
  color: var(--muted);
}

.as-of {
  margin-top: 0.25rem;
  font-size: 0.68rem;
  color: var(--muted);
}

.tf-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}

.chip {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  cursor: not-allowed;
  opacity: 0.55;
}

.chip.active {
  background: var(--chip-active);
  border-color: var(--chip-active);
  color: #fff;
  cursor: default;
  opacity: 1;
}

.chip:disabled:not(.active) {
  cursor: not-allowed;
}

.range-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.65rem;
}

.range-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.range-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.range-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
}

.range-btn:hover:not(.stub):not(.active) {
  border-color: #c0c4cc;
  background: #fafafa;
}

.range-btn.active {
  background: #eef2ff;
  border-color: #6366f1;
  color: #312e81;
  font-weight: 600;
}

.range-btn.stub {
  opacity: 0.45;
  cursor: not-allowed;
}

.chart-wrap {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.chart {
  width: 100%;
  height: 480px;
}

.chart-status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  color: var(--muted);
  pointer-events: none;
  transition: opacity 0.2s;
}

.chart-status.hidden {
  opacity: 0;
  visibility: hidden;
}

.chart-status.error {
  color: var(--red);
  pointer-events: auto;
}

.footnote {
  margin: 0.85rem 0 0;
  font-size: 0.68rem;
  color: var(--muted);
  line-height: 1.5;
}

.later-stubs {
  margin-top: 1.75rem;
}

.stubs-heading {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stub-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.stub-card {
  background: var(--card);
  border: 1px dashed #d1d5db;
  border-radius: var(--radius);
  padding: 1rem;
  opacity: 0.85;
}

.stub-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
}

.stub-card p {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: #f3f4f6;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  padding: 1rem;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--card);
}

.site-footer .sep {
  opacity: 0.5;
}

@media (max-width: 640px) {
  .topbar {
    padding: 0.55rem 0.85rem;
  }

  .page {
    padding: 0.75rem 0.75rem 2rem;
  }

  .quote-block {
    padding: 0.85rem 1rem;
  }

  .instrument-title {
    font-size: 1.2rem;
  }

  .last-price {
    font-size: 1.5rem;
  }

  .quote-right {
    text-align: left;
    width: 100%;
  }

  .chart {
    height: 360px;
  }
}


/* Crosshair OHLC overlay */
.chart-wrap {
  position: relative;
}

.ohlc-tooltip {
  position: absolute;
  z-index: 5;
  top: 0.75rem;
  left: 0.75rem;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
  padding: 0.45rem 0.65rem;
  font-size: 0.72rem;
  line-height: 1.4;
  color: #111827;
  min-width: 11.5rem;
}

.ohlc-tooltip.hidden {
  display: none;
}

.ohlc-tooltip .tt-date {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.ohlc-tooltip .tt-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.ohlc-tooltip .tt-label {
  color: #6b7280;
}

.ohlc-tooltip .tt-val {
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.ohlc-tooltip .tt-val.up { color: #0d9488; }
.ohlc-tooltip .tt-val.down { color: #dc2626; }

.ohlc-tooltip .tt-unit { color: #9ca3af; font-size: 0.65rem; }