/* Design tokens - light is the base, dark overrides via prefers-color-scheme. */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --series-1: #2a78d6;
  /* Korean market convention: up = red, down = blue (diverging pair poles). */
  --delta-up: #d03b3b;
  --delta-down: #256abf;
  --badge-warn-bg: #fdf3d7;
  --badge-warn-ink: #7a5600;
  --badge-err-bg: #fbe3e3;
  --badge-err-ink: #8f2020;
  --badge-ok-bg: #e2f2e2;
  --badge-ok-ink: #106310;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.1);
    --series-1: #3987e5;
    --delta-up: #e66767;
    --delta-down: #3987e5;
    --badge-warn-bg: #3a2f10;
    --badge-warn-ink: #fab219;
    --badge-err-bg: #3c1a1a;
    --badge-err-ink: #e66767;
    --badge-ok-bg: #143214;
    --badge-ok-ink: #4fc24f;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 14px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1, h2 { margin: 0; font-weight: 650; }
h1 { font-size: 17px; }
h2 { font-size: 14px; color: var(--ink-2); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.topbar-sub { font-size: 13px; font-weight: 400; color: var(--muted); margin-left: 6px; }
.topbar-right { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.clocks { display: flex; gap: 14px; font-size: 12.5px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.clock::before { content: "●"; font-size: 7px; vertical-align: 2px; margin-right: 5px; color: var(--series-1); }
.health { font-size: 12px; color: var(--muted); }

.layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.chart-controls { display: flex; gap: 8px; align-items: center; }
select, button {
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--baseline);
  border-radius: 7px;
  padding: 5px 9px;
}
button { cursor: pointer; }
button[aria-pressed="true"] { background: var(--grid); }

/* ------------------------------------------------------------------ stat tiles */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 13px;
}
.tile-label { font-size: 12px; color: var(--ink-2); }
.tile-value { font-size: 21px; font-weight: 650; margin-top: 2px; }
.tile-delta { font-size: 12.5px; margin-top: 1px; color: var(--ink-2); }
.tile-delta.up { color: var(--delta-up); }
.tile-delta.down { color: var(--delta-down); }

/* ------------------------------------------------------------------ chart */
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .axis-label { font-size: 11px; fill: var(--muted); }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--baseline); stroke-width: 1; }
.chart .series-line { stroke: var(--series-1); stroke-width: 2; fill: none; }
.chart .hover-dot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.chart .crosshair { stroke: var(--baseline); stroke-width: 1; stroke-dasharray: 3 3; }
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--baseline);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 12px;
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  white-space: nowrap;
  transform: translate(-50%, -110%);
}
.chart-tooltip .tt-value { font-weight: 650; }
.chart-empty { color: var(--muted); padding: 24px 4px; }

.chart-table { overflow-x: auto; margin-top: 8px; }

/* ------------------------------------------------------------------ columns */
.columns {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 820px) {
  .columns { grid-template-columns: 1fr; }
}

.briefing-list { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.briefing-list button {
  width: 100%;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-color: var(--border);
}
.briefing-list button[aria-current="true"] { border-color: var(--series-1); background: var(--grid); }
.briefing-date { font-weight: 650; }
.day-closed {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  column-gap: 8px;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--muted);
  border: 1px dashed var(--grid);
  border-radius: 7px;
}
.day-closed .briefing-date { font-weight: 500; white-space: nowrap; }
.briefing-line { font-size: 12px; color: var(--ink-2); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

.badge {
  display: inline-block;
  font-size: 11px;
  border-radius: 20px;
  padding: 1px 8px;
  font-weight: 600;
}
.badge-ok { background: var(--badge-ok-bg); color: var(--badge-ok-ink); }
.badge-warn { background: var(--badge-warn-bg); color: var(--badge-warn-ink); }
.badge-error { background: var(--badge-err-bg); color: var(--badge-err-ink); }

/* ------------------------------------------------------------------ summary card */
.summary-card {
  border: 1px solid var(--border);
  border-left: 3px solid var(--series-1);
  border-radius: 10px;
  background: var(--page);
  padding: 12px 16px;
  margin: 10px 0 14px;
}
.summary-headline { font-size: 16px; font-weight: 700; margin: 0 0 6px; }
.summary-overview { margin: 0 0 10px; color: var(--ink-2); }
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.summary-block h3 { font-size: 12.5px; margin: 0 0 4px; color: var(--muted); font-weight: 650; }
.summary-block.risk h3 { color: var(--badge-err-ink); }
.summary-block ul { margin: 0; padding-left: 18px; }
.summary-block li { margin: 2px 0; }

/* ------------------------------------------------------------------ report */
.report-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 12.5px; color: var(--ink-2); margin-bottom: 4px; }
.markdown { max-width: 76ch; }
.markdown h1 { font-size: 19px; margin: 10px 0 6px; }
.markdown h2 { font-size: 15px; color: var(--ink); margin: 18px 0 6px; }
.markdown h3 { font-size: 14px; margin: 14px 0 4px; }
.markdown p, .markdown li { color: var(--ink); }
.markdown a { color: var(--series-1); }
.markdown table { border-collapse: collapse; font-size: 13px; margin: 8px 0; display: block; overflow-x: auto; }
.markdown th, .markdown td { border: 1px solid var(--grid); padding: 4px 9px; text-align: right; }
.markdown th:first-child, .markdown td:first-child { text-align: left; }
.markdown th { background: var(--page); color: var(--ink-2); font-weight: 600; }
.markdown td { font-variant-numeric: tabular-nums; }
.markdown blockquote { margin: 8px 0; padding: 2px 12px; border-left: 3px solid var(--baseline); color: var(--ink-2); }
.markdown code { background: var(--page); border: 1px solid var(--grid); border-radius: 4px; padding: 0 4px; font-size: 12.5px; }

table.data-table { border-collapse: collapse; font-size: 13px; }
table.data-table th, table.data-table td { border: 1px solid var(--grid); padding: 4px 10px; text-align: right; font-variant-numeric: tabular-nums; }
table.data-table th:first-child, table.data-table td:first-child { text-align: left; }
table.data-table th { background: var(--page); color: var(--ink-2); font-weight: 600; }

.errors-list { list-style: none; margin: 8px 0 0; padding: 0; font-size: 12.5px; display: flex; flex-direction: column; gap: 6px; }
.errors-list .err-ts { color: var(--muted); margin-right: 8px; }
.errors-list .err-subject { font-weight: 650; color: var(--badge-err-ink); margin-right: 8px; }
.errors-list .err-detail { color: var(--ink-2); overflow-wrap: anywhere; }