:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1d1d1b;
  --muted: #6b6b66;
  --border: #deded8;
  --accent: #2f5d8a;
  --accent-text: #ffffff;
  --danger: #a33a2c;
  --ok: #2e7d4f;
  --warn: #9a6b00;
  --radius: 8px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --surface: #20201e;
    --text: #ececea;
    --muted: #a3a39d;
    --border: #3a3a36;
    --accent: #7fb0e0;
    --accent-text: #10202f;
    --danger: #e0806f;
    --ok: #79c99a;
    --warn: #e0b45a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .brand { font-weight: 600; color: var(--text); text-decoration: none; }
.site-header nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; }
.site-header nav a { text-decoration: none; }
.site-header nav a.active { font-weight: 600; }

.content { max-width: 1200px; margin: 0 auto; padding: 24px 16px 48px; }
.content.narrow { max-width: 480px; }
.prose { max-width: 760px; }
.site-footer { text-align: center; color: var(--muted); font-size: 13px; padding: 24px 16px; }

h1 { font-size: 1.6rem; margin: 0 0 16px; }
h2 { font-size: 1.2rem; margin: 32px 0 12px; }
h3 { font-size: 1rem; margin: 20px 0 8px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

form.stack { display: grid; gap: 12px; }
form.inline { display: inline; }
form.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; }
label { display: grid; gap: 4px; font-size: 14px; }
label.check { display: flex; align-items: center; gap: 8px; }
input, select, textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  max-width: 100%;
}
textarea { min-height: 120px; }
input[type="checkbox"], input[type="radio"] { width: auto; }

button, .button {
  font: inherit;
  display: inline-block;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
  text-decoration: none;
}
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
button.link { background: none; border: none; padding: 0; color: var(--accent); }
button:disabled { opacity: 0.6; cursor: default; }

.notice { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; border: 1px solid var(--border); background: var(--surface); }
.notice.error { border-color: var(--danger); color: var(--danger); }
.notice.ok { border-color: var(--ok); color: var(--ok); }
.notice.warn { border-color: var(--warn); color: var(--warn); }

/* Zero-height sticky anchor: notices overlay the page under the header and stay in view on scroll. */
.toasts { position: sticky; top: 0; height: 0; z-index: 20; }
.toast-list { position: absolute; top: 8px; right: 16px; width: min(380px, calc(100% - 32px)); display: grid; gap: 8px; }
.toast { display: flex; align-items: flex-start; gap: 12px; padding: 10px 14px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); box-shadow: 0 4px 16px rgb(0 0 0 / 0.18); }
.toast .toast-body { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.toast .toast-body > :last-child { margin-bottom: 0; }
.toast.ok { border-color: var(--ok); }
.toast.ok .toast-body > p:first-child { color: var(--ok); }
.toast.error { border-color: var(--danger); }
.toast.error .toast-body { color: var(--danger); }
.toast button { padding: 2px 10px; font-size: 14px; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--surface); }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }

.badge { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 10px; border: 1px solid var(--border); color: var(--muted); }
.badge.ok { border-color: var(--ok); color: var(--ok); }
.badge.warn { border-color: var(--warn); color: var(--warn); }
.badge.error { border-color: var(--danger); color: var(--danger); }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 6px 0; }
.checklist li.done::before { content: "✓ "; color: var(--ok); }
.checklist li.todo::before { content: "○ "; color: var(--muted); }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.tile .thumb { aspect-ratio: 1; background: var(--bg); display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 13px; text-align: center; }
.tile .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tile .meta { padding: 8px; font-size: 13px; display: grid; gap: 4px; }
.tile .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.viewer { background: #000; border-radius: var(--radius); display: flex; justify-content: center; }
.viewer img, .viewer video { max-width: 100%; max-height: 80vh; display: block; }

.stars { display: inline-flex; gap: 2px; }
.stars button { background: none; border: none; padding: 0 2px; font-size: 22px; color: var(--muted); }
.stars button.on { color: var(--warn); }

.comments { list-style: none; padding: 0; margin: 0; }
.comments li { padding: 8px 0; border-bottom: 1px solid var(--border); }
.comments .replies { list-style: none; padding-left: 24px; margin: 8px 0 0; }
.comments .hidden { opacity: 0.5; }

.bar-chart { margin: 0; }
.bar-chart figcaption { font-weight: 600; margin-bottom: 12px; }
.bar-chart .plot { display: flex; align-items: flex-end; gap: 2px; height: 160px; padding-top: 20px; border-bottom: 1px solid var(--border); }
.bar-chart .slot { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; }
.bar-chart .bar { width: 100%; max-width: 24px; background: var(--accent); border-radius: 4px 4px 0 0; }
.bar-chart .slot:hover .bar { opacity: 0.75; }
.bar-chart .value { font-size: 12px; color: var(--text); margin-bottom: 2px; font-variant-numeric: tabular-nums; }
.bar-chart .labels { display: flex; gap: 2px; margin: 4px 0 8px; }
.bar-chart .labels span { flex: 1; min-width: 0; text-align: center; font-size: 12px; color: var(--muted); }
.bar-chart td.num { font-variant-numeric: tabular-nums; }

.progress { height: 10px; border-radius: 5px; background: var(--border); overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); width: 0; transition: width 0.3s; }

.code { font-family: ui-monospace, monospace; font-size: 15px; letter-spacing: 0.05em; word-break: break-all; }
.qr { width: 220px; max-width: 100%; }
.qr svg { display: block; width: 100%; height: auto; border-radius: 6px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }