:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #57534e;
  --border: #e7e5e4;
  --accent: #15803d;
  --notice-bg: #fef9c3;
  --notice-text: #713f12;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --surface: #1c1917;
    --text: #f5f5f4;
    --muted: #a8a29e;
    --border: #292524;
    --accent: #4ade80;
    --notice-bg: #422006;
    --notice-text: #fde68a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 var(--font);
}

a { color: var(--accent); }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px; z-index: 10; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.header-inner { display: flex; gap: 16px; align-items: flex-start; justify-content: space-between; padding-top: 20px; padding-bottom: 20px; }
.brand { display: flex; gap: 12px; align-items: center; }
.brand .logo { flex: none; }
.brand h1 { margin: 0; font-size: 1.6rem; line-height: 1.2; }
.brand p { margin: 4px 0 0; color: var(--muted); }
.lang-picker select {
  font: inherit; padding: 6px 8px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}

.notice {
  background: var(--notice-bg); color: var(--notice-text);
  padding: 10px 14px; border-radius: var(--radius); margin: 20px 0 0; font-size: .92rem;
}

/* Controls */
.controls { margin: 20px 0 8px; display: grid; gap: 12px; }
.controls input[type="search"] {
  width: 100%; font: inherit; padding: 10px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.controls fieldset { border: 0; margin: 0; padding: 0; }
.controls legend { font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 6px; }
.controls-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
#result-count { margin: 0; color: var(--muted); font-size: .9rem; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  --c: var(--muted);
  font: inherit; font-size: .88rem; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.chip[aria-pressed="true"] { border-color: var(--c); background: color-mix(in srgb, var(--c) 18%, var(--surface)); }
.chip:focus-visible, .link-button:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.link-button { font: inherit; font-size: .9rem; background: none; border: 0; color: var(--accent); cursor: pointer; padding: 0; text-decoration: underline; }

/* Timeline */
.timeline, .timeline ol { list-style: none; margin: 0; padding: 0; }
.year > h2 {
  position: sticky; top: 0; z-index: 1;
  margin: 24px 0 8px; padding: 6px 0;
  background: var(--bg); font-size: 1.25rem;
}
.year > ol { border-left: 2px solid var(--border); margin-left: 6px; padding-left: 20px; }

.event { position: relative; margin-bottom: 12px; }
.event .dot {
  position: absolute; left: -28px; top: 18px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--c, var(--muted)); border: 3px solid var(--bg);
}
.event details {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.event:target details, .event.highlight details { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent); }
.event summary { cursor: pointer; padding: 12px 14px; list-style: none; }
.event summary::-webkit-details-marker { display: none; }
.event .meta { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .82rem; color: var(--muted); }
.event .category { font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.event h3 { margin: 4px 0 6px; font-size: 1.05rem; line-height: 1.35; }
.event .people { display: flex; flex-wrap: wrap; gap: 6px; }
.event .person-tag { --c: var(--muted); font-size: .8rem; display: inline-flex; align-items: center; gap: 5px; }
.event .person-tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--c); }

.event .body { padding: 0 14px 14px; border-top: 1px solid var(--border); }
.event .body p { margin: 12px 0 0; }
.event .context {
  margin-top: 12px; padding: 8px 12px; border-left: 3px solid var(--border);
  color: var(--muted); font-size: .94rem;
}
.event .context strong { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.event h4 { margin: 14px 0 4px; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.event .sources { margin: 0; padding-left: 18px; font-size: .92rem; }
.event .pending { margin: 4px 0 0; font-size: .9rem; color: var(--notice-text); background: var(--notice-bg); display: inline-block; padding: 2px 8px; border-radius: 6px; }
.event .actions { margin-top: 12px; }

.empty { color: var(--muted); text-align: center; padding: 32px 0; }

.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 20px 0; color: var(--muted); font-size: .9rem; }
.site-footer p { margin: 4px 0; }

@media (max-width: 520px) {
  .header-inner { flex-direction: column; }
  .brand h1 { font-size: 1.35rem; }
}