:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #1d1d1b;
  --muted: #6b6a64;
  --line: #dcdad2;
  --accent: #2f5d8a;
  --accent-ink: #ffffff;
  --chip: #ecebe5;
  --error: #a33a2a;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.05), 0 4px 16px rgb(0 0 0 / 0.04);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --surface: #20201e;
    --ink: #ecebe6;
    --muted: #9d9b93;
    --line: #34332f;
    --accent: #8db8e3;
    --accent-ink: #10202f;
    --chip: #2a2a27;
    --error: #ef8d7c;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

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

a { color: var(--accent); text-underline-offset: 2px; }

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

.top {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px;
  max-width: 980px; margin: 0 auto; padding: 18px 16px;
}
.brand {
  font: 700 1.15rem/1 var(--mono); color: var(--ink); text-decoration: none; letter-spacing: -0.02em;
}
.brand span { color: var(--muted); margin: 0 2px; }
.top nav { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 0.92rem; white-space: nowrap; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--ink); }

main { max-width: 980px; margin: 0 auto; padding: 0 16px 48px; }

.hero { padding: 36px 0 12px; }
.hero h1 { font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.15; margin: 0 0 10px; letter-spacing: -0.02em; }
.lead { color: var(--muted); margin: 0 0 22px; max-width: 60ch; }

#search { display: flex; gap: 8px; }
#search input {
  flex: 1; min-width: 0;
  font: inherit; font-size: 1.05rem;
  padding: 13px 16px;
  border: 1.5px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink);
}
#search input:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
#search button {
  font: inherit; font-weight: 600;
  padding: 0 22px; border: 0; border-radius: var(--radius);
  background: var(--accent); color: var(--accent-ink); cursor: pointer;
}
#search button:hover { filter: brightness(1.08); }
#search button:focus-visible, .examples button:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }

.examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.examples button {
  font: inherit; font-size: 0.87rem;
  padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--chip); color: var(--ink); cursor: pointer;
}
.examples button:hover { border-color: var(--accent); }

.status { min-height: 1.5em; color: var(--muted); margin: 26px 0 14px; }
.status.error { color: var(--error); }
.status.loading::after {
  content: ""; display: inline-block; width: 0.9em; height: 0.9em; margin-left: 8px; vertical-align: -2px;
  border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .status.loading::after { animation: none; } }

.results { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px 16px;
}
.card h2 { font-size: 1.2rem; margin: 0; line-height: 1.3; }
.card h2 a { color: var(--ink); text-decoration: none; }
.card h2 a:hover { text-decoration: underline; }
.card .num { font-family: var(--mono); color: var(--muted); font-weight: 600; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 4px 0 12px; font-size: 0.86rem; color: var(--muted); }
.score { font-family: var(--mono); }

figure { margin: 0; }
/* xkcd art is black-on-white: keep a white mat in dark mode too */
figure a {
  display: flex; justify-content: center;
  background: #fff; border-radius: 6px; padding: 12px;
}
figure img { display: block; max-width: 100%; height: auto; max-height: 640px; object-fit: contain; }
.fallback { display: none; color: var(--muted); font-size: 0.9rem; padding: 14px 0; }
figure.broken a { display: none; }
figure.broken .fallback { display: block; }

.alt { margin: 12px 0 0; font-style: italic; color: var(--ink); }
.alt .label { font-style: normal; color: var(--muted); font-size: 0.85rem; }

.links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 12px 0 0; font-size: 0.93rem; }
.links .primary { font-weight: 600; }

.foot {
  max-width: 980px; margin: 0 auto; padding: 24px 16px 40px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 0.86rem;
}
.foot p { margin: 4px 0; }
.foot code { font-family: var(--mono); background: var(--chip); padding: 1px 6px; border-radius: 4px; overflow-wrap: anywhere; }
.muted { color: var(--muted); }

@media (max-width: 560px) {
  #search { flex-direction: column; }
  #search button { padding: 12px; }
  .card { padding: 14px 14px 12px; }
  figure a { padding: 6px; }
}

/* --- login / admin --------------------------------------------------------- */
.narrow { max-width: 420px; padding-top: 48px; }
.panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px 22px; margin: 0 0 20px;
}
.panel h1 { margin: 0 0 18px; font-size: 1.5rem; }
.panel h2 { margin: 0 0 10px; font-size: 1.15rem; }
.panel h3 { margin: 18px 0 6px; font-size: 0.95rem; color: var(--muted); font-weight: 600; }
.panel.highlight { border-color: var(--accent); }
.stack { display: grid; gap: 14px; }
.stack label { display: grid; gap: 6px; font-size: 0.92rem; color: var(--muted); }
.stack input, .inline-form input {
  font: inherit; color: var(--ink); background: var(--surface);
  padding: 11px 14px; border: 1.5px solid var(--line); border-radius: var(--radius); min-width: 0;
}
.stack input:focus-visible, .inline-form input:focus-visible {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
.btn {
  font: inherit; font-weight: 600; cursor: pointer;
  padding: 11px 20px; border: 0; border-radius: var(--radius);
  background: var(--accent); color: var(--accent-ink);
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: 0.6; cursor: progress; }
.btn.small { padding: 6px 12px; font-size: 0.86rem; }
.btn.danger { background: transparent; color: var(--error); border: 1px solid currentColor; }
.btn:focus-visible, .linkish:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }
.linkish { font: inherit; background: none; border: 0; padding: 0; color: var(--muted); cursor: pointer; }
.linkish:hover { color: var(--ink); }
.top nav a[aria-current="page"] { color: var(--ink); }
.inline-form { display: flex; gap: 8px; max-width: 560px; }
.inline-form input { flex: 1; }
.copy-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.secret, .snippet, .mono { font-family: var(--mono); }
.secret {
  background: var(--chip); padding: 8px 10px; border-radius: 6px;
  overflow-wrap: anywhere; flex: 1; min-width: 0; font-size: 0.9rem;
}
.snippet {
  background: var(--chip); padding: 10px 12px; border-radius: 6px; margin: 0;
  font-size: 0.82rem; white-space: pre-wrap; overflow-wrap: anywhere;
}
.table-wrap { overflow-x: auto; }
table.keys { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.keys th { text-align: left; color: var(--muted); font-weight: 600; font-size: 0.82rem; }
table.keys th, table.keys td { padding: 9px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.keys td:first-child { white-space: normal; }
@media (max-width: 560px) {
  .inline-form { flex-direction: column; }
}