:root {
  --bg: #f6f5f2;
  --fg: #1c1b19;
  --muted: #5c5a55;
  --faint: #8a877f;
  --stroke: #d4d1c8;
  --fill: #eeece6;
  --elevated: #ffffff;
  --green: #2f7d4a;
  --yellow: #b8860b;
  --orange: #c45c26;
  --cyan: #2a7a86;
  --blue: #3b6ea5;
  --gray: #8a877f;
  --danger: #b42318;
  --focus: #1c1b19;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1b19;
    --fg: #f3f1ea;
    --muted: #b4b0a6;
    --faint: #8a877f;
    --stroke: #3a3833;
    --fill: #2a2824;
    --elevated: #242320;
    --green: #6fbf86;
    --yellow: #e0b44a;
    --orange: #e08956;
    --cyan: #6cb8c2;
    --blue: #7aa3d4;
    --gray: #8a877f;
    --danger: #e06b63;
    --focus: #f3f1ea;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

h1 {
  font-size: 24px;
  font-weight: 650;
  margin: 0;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 18px;
  font-weight: 650;
  margin: 0;
}

h3 {
  font-size: 14px;
  font-weight: 650;
  margin: 0;
}

p { margin: 0; }

.stack { display: flex; flex-direction: column; }
.stack-4 { gap: 4px; }
.stack-8 { gap: 8px; }
.stack-12 { gap: 12px; }
.stack-20 { gap: 20px; }
.stack-28 { gap: 28px; }

.row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.muted { color: var(--muted); font-size: 13px; }
.faint { color: var(--faint); font-size: 13px; }
.small { font-size: 13px; }
.semibold { font-weight: 600; }

code, .code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--fill);
  padding: 1px 5px;
  border-radius: 3px;
}

.pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--stroke);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--muted);
  background: transparent;
}

.pill.active {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.callout {
  border: 1px solid var(--stroke);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--fill);
}

.callout.success { border-left-color: var(--green); }
.callout.warning { border-left-color: var(--yellow); }
.callout.info { border-left-color: var(--blue); }
.callout.danger { border-left-color: var(--danger); }

.callout-title { font-weight: 650; font-size: 13px; margin-bottom: 4px; }

.stats {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 800px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.stat {
  border: 1px solid var(--stroke);
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--elevated);
}

.stat-value {
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.stat.success .stat-value { color: var(--green); }
.stat.warning .stat-value { color: var(--yellow); }
.stat.danger .stat-value { color: var(--danger); }

.bar {
  display: flex;
  height: 10px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--fill);
  border: 1px solid var(--stroke);
}

.bar > span { display: block; height: 100%; }
.bar-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.legend { display: flex; flex-wrap: wrap; gap: 12px; }
.swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  display: inline-block;
}

.heat-group { margin-bottom: 8px; }
.heat-cells { display: flex; flex-wrap: wrap; gap: 4px; }

.heat-cell {
  margin: 0;
  padding: 5px 7px;
  min-width: 72px;
  border-radius: 4px;
  border: 1px solid var(--stroke);
  border-left-width: 3px;
  background: var(--fill);
  color: var(--fg);
  font: inherit;
  font-size: 10px;
  font-weight: 500;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
}

.heat-cell.gap { font-weight: 600; background: var(--elevated); }
.heat-cell.selected { border-color: var(--focus); border-width: 1.5px; border-left-width: 3px; }
.heat-cell.dim { opacity: 0.4; }

.dag-wrap {
  position: relative;
  overflow: auto;
  border: 1px solid var(--stroke);
  border-radius: 8px;
  background: var(--fill);
}

.dag-node {
  position: absolute;
  margin: 0;
  padding: 4px 6px;
  border-radius: 6px;
  border: 1px solid var(--stroke);
  border-top-width: 3px;
  background: var(--elevated);
  color: var(--fg);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font: inherit;
}

.dag-node.selected { border-color: var(--focus); border-width: 2px; border-top-width: 3px; }
.dag-id { font-size: 9px; color: var(--faint); }
.dag-short { font-size: 11px; font-weight: 650; }

.card {
  border: 1px solid var(--stroke);
  border-radius: 6px;
  background: var(--elevated);
}

.card-body { padding: 12px; }

.blocker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 8px;
}

.blocker {
  padding: 10px;
  border: 1px solid var(--stroke);
  border-left-width: 3px;
  border-radius: 6px;
  background: var(--fill);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  text-align: left;
  padding: 7px 8px;
  border-bottom: 1px solid var(--stroke);
  vertical-align: top;
}

th {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
  background: var(--bg);
}

tr.success td { color: var(--green); }
tr.warning td { color: var(--yellow); }
tr.danger td { color: var(--orange); }
tr.info td { color: var(--cyan); }

.filters button {
  font: inherit;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.filters button.active {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

a { color: inherit; }
a:hover { text-decoration: underline; }

hr {
  border: 0;
  border-top: 1px solid var(--stroke);
  margin: 0;
}

.status { color: var(--muted); }