:root {
  color-scheme: light;
  --ink: #17202e;
  --navy: #1f3350;
  --navy-light: #35537f;
  --gold: #c8921a;
  --gold-dark: #a97a12;
  --gold-wash: #fbf3dc;
  --bg: #f2f4f7;
  --surface: #ffffff;
  --border: #dfe3ea;
  --muted: #5c6880;
  --good: #1b7a4b;
  --bad: #b42318;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.45;
}

header {
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: #fff;
  border-bottom: 3px solid var(--gold);
}
header .wrap { padding: 0 16px; }
header h1 { margin: 0; font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
header p { margin: 4px 0 0; font-size: 13px; opacity: 0.88; max-width: 62ch; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(31, 51, 80, 0.07);
}
.card h2 { margin: 0 0 8px; font-size: 18px; }
.card h3 { margin: 20px 0 6px; font-size: 15px; }

.grid { display: grid; gap: 12px; }
.grid.controls { grid-template-columns: repeat(12, 1fr); align-items: end; margin-top: 12px; }
.col-12 { grid-column: span 12; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }
.col-2 { grid-column: span 2; }
@media (max-width: 900px) {
  .col-6, .col-4, .col-3, .col-2 { grid-column: span 12; }
}

label { display: block; font-size: 12px; font-weight: 700; margin: 0 0 6px; }

select, input {
  width: 100%;
  padding: 11px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
select:focus-visible, input:focus-visible, button:focus-visible, .alert-row:focus-visible {
  outline: 2px solid var(--navy-light);
  outline-offset: 2px;
}
select:focus, input:focus { border-color: var(--navy-light); box-shadow: 0 0 0 3px rgba(53, 83, 127, 0.18); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.split { justify-content: space-between; }

button {
  cursor: pointer;
  padding: 11px 14px;
  border-radius: 8px;
  border: 1px solid var(--gold-dark);
  background: var(--gold);
  color: var(--ink);
  font-weight: 800;
  font-size: 14px;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}
button:hover:not(:disabled) { background: var(--gold-dark); color: #fff; box-shadow: 0 4px 10px rgba(169, 122, 18, 0.28); }
button.secondary { background: #fff; color: var(--navy); border-color: var(--navy-light); }
button.secondary:hover:not(:disabled) { background: var(--navy); color: #fff; box-shadow: none; }
button.danger { background: #fff; color: var(--bad); border-color: var(--bad); }
button.danger:hover:not(:disabled) { background: var(--bad); color: #fff; box-shadow: none; }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.status { font-size: 13px; color: #374151; }
.status.ok, .ok { color: var(--good); }
.status.err, .err { color: var(--bad); }
.muted { color: var(--muted); }
code { background: #eef1f6; padding: 1px 5px; border-radius: 4px; font-size: 0.92em; }

.table-wrap { margin-top: 12px; overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { text-align: left; padding: 10px 10px; border-bottom: 1px solid #edf0f5; font-size: 13px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
th { font-size: 12px; background: var(--gold-wash); position: sticky; top: 0; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.item-name { font-weight: 700; white-space: normal; }
.item-id { font-size: 11px; color: var(--muted); }
.delta-up { color: var(--bad); }   /* price above its usual level: worse for a buyer */
.delta-down { color: var(--good); }
.spark { display: block; }
.spark polyline { fill: none; stroke: var(--navy-light); stroke-width: 1.6; stroke-linejoin: round; }
.spark circle { fill: var(--gold-dark); }

.notes {
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: var(--gold-wash);
  color: var(--ink);
}

.alerts-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 10px; margin-top: 10px; }
.alert-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}
.alert-row.flash { animation: flash 2.4s ease-out 1; }
@keyframes flash { from { background: var(--gold-wash); border-color: var(--gold); } to { background: #fff; } }
@media (prefers-reduced-motion: reduce) { .alert-row.flash { animation: none; border-color: var(--gold); } }
.alert-primary { font-weight: 700; }
.alert-meta { font-size: 12px; color: var(--muted); margin-top: 3px; }
.alert-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.chip {
  font-size: 12px;
  border: 1px solid var(--border);
  background: #eef1f6;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--navy);
}
.chip.armed { background: #e3f4ea; border-color: #b7e0c8; color: var(--good); }
.chip.fired { background: var(--gold-wash); border-color: #ecd49a; color: #7a5600; }
.chip.error { background: #fde8e6; border-color: #f4bcb6; color: var(--bad); }

.footer-note { margin-top: 12px; font-size: 12px; color: var(--muted); }

@media (max-width: 640px) {
  header { padding: 12px 16px; }
  .alert-row { flex-direction: column; }
}