:root {
  --fg: #222;
  --fg-muted: #555;
  --fg-subtle: #888;
  --bg: #fff;
  --bg-elevated: #fafafa;
  --bg-code: #f6f8fa;
  --border: #eee;
  --accent: #0a58ca;
  --remembered-bg: #e6f4ea;
  --remembered-fg: #1a7431;
  --forgotten-bg: #fbe9e7;
  --forgotten-fg: #a13a2a;
  --recreated-bg: #fff3d8;
  --recreated-fg: #6b4a00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e6e6;
    --fg-muted: #b5b5b5;
    --fg-subtle: #888;
    --bg: #14161a;
    --bg-elevated: #1c1f24;
    --bg-code: #1c1f24;
    --border: #2a2d33;
    --accent: #6ea8ff;
    --remembered-bg: #163a24;
    --remembered-fg: #7fd99a;
    --forgotten-bg: #3a2420;
    --forgotten-fg: #e59a8a;
    --recreated-bg: #3a2f14;
    --recreated-fg: #f4d68a;
  }
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

header { border-bottom: 1px solid var(--border); background: var(--bg-elevated); }
header .container { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }
.brand { font-weight: 600; color: var(--fg); }
header nav a { margin-left: 18px; color: var(--fg-muted); font-size: 0.95rem; }

main.container { padding-top: 32px; padding-bottom: 64px; }
.content { max-width: 900px; margin: 0 auto; }
.content.wide { max-width: none; }

h1 { font-size: 1.85rem; margin: 0 0 8px; line-height: 1.25; }
h2 { font-size: 1.3rem; margin: 32px 0 12px; }
h3 { font-size: 1.05rem; margin: 24px 0 8px; }
.lede { color: var(--fg-muted); }
.breadcrumb { font-size: 0.85rem; color: var(--fg-subtle); }
.breadcrumb a { color: var(--fg-subtle); }
.breadcrumb span { color: var(--fg); }

.prefix-grid {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.prefix-grid li {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elevated);
  position: relative;
}
.prefix-grid li:hover { border-color: var(--accent); }
.prefix-grid h3 { margin: 0 0 6px; }
.prefix-grid h3 a { color: var(--accent); }
.prefix-grid h3 a::after { content: ""; position: absolute; inset: 0; }
.prefix-grid .count { margin: 0; color: var(--fg-muted); font-size: 0.85rem; }

.chunk-list { list-style: none; padding: 0; }
.chunk-list li { padding: 6px 0; border-bottom: 1px solid var(--border); }

.filter-bar { display: flex; gap: 6px; margin: 20px 0; }
.filter-input { position: absolute; opacity: 0; width: 1px; height: 1px; pointer-events: none; }
.filter-bar label {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 0.85rem;
  cursor: pointer;
}
.filter-input:checked + label { background: var(--accent); border-color: var(--accent); color: #fff; }
.filter-input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
.content:has(#filter-remembered:checked) .group.forgotten { display: none; }
.content:has(#filter-forgotten:checked) .group.remembered { display: none; }

.group { padding: 16px 20px; margin-bottom: 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-elevated); }
.group h2 { font-size: 1.1rem; margin: 0 0 6px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; padding: 2px 8px; border-radius: 10px; }
.badge.remembered { background: var(--remembered-bg); color: var(--remembered-fg); }
.badge.forgotten { background: var(--forgotten-bg); color: var(--forgotten-fg); }
.badge.recreated { background: var(--recreated-bg); color: var(--recreated-fg); }
.group-footer { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.recreated-note { font-size: 0.85rem; color: var(--fg-subtle); margin: 0 0 8px; }
.recreated-note:last-child { margin-bottom: 0; }
.forgotten-summary { color: var(--fg-muted); font-size: 0.9rem; margin: 0; }
.body pre { background: var(--bg-code); padding: 12px; border-radius: 6px; overflow-x: auto; }
.body code { background: var(--bg-code); padding: 1px 4px; border-radius: 3px; }
.body pre code { background: none; padding: 0; }
.body blockquote {
  margin: 0 0 16px;
  padding: 8px 16px;
  border-left: 3px solid var(--border);
  color: var(--fg-muted);
  background: var(--bg-elevated);
}
.body p { margin: 0 0 16px; }
.body ul, .body ol { margin: 0 0 16px; padding-left: 24px; }
.body li { margin: 4px 0; }

footer { border-top: 1px solid var(--border); margin-top: 40px; }
footer .container { padding: 20px 24px; color: var(--fg-subtle); font-size: 0.85rem; }

.chart-section { margin: 32px 0; }
.chart-section h2 { font-size: 1.15rem; margin: 0 0 4px; }
.chart-caption { color: var(--fg-subtle); font-size: 0.85rem; margin: 0 0 12px; }
.chart { display: block; width: 100%; height: auto; max-width: 710px; }
.chart-empty { color: var(--fg-subtle); font-size: 0.9rem; font-style: italic; }
.chart-label, .chart-value, .chart-axis-label { font-size: 11px; fill: var(--fg-muted); }
.chart-value { font-variant-numeric: tabular-nums; }
.chart-axis-label-x { fill: var(--fg-subtle); }
.chart-axis { stroke: var(--border); stroke-width: 1; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart-bar-default { fill: var(--accent); }
.chart-bar-remembered { fill: var(--remembered-fg); }
.chart-bar-forgotten { fill: var(--forgotten-fg); }

@media (max-width: 740px) {
  .container { padding: 0 16px; }
  header .container { padding: 12px 16px; }
  main.container { padding-top: 24px; }
  .prefix-grid { grid-template-columns: 1fr; }
}