/* Admin UI: mobile-first, works from 360 px, follows the system light/dark setting. */
:root {
  color-scheme: light dark;
  --bg: #fafaf9;
  --fg: #1c1917;
  --muted: #78716c;
  --line: #e7e5e4;
  --card: #ffffff;
  --accent: #2563eb;
  --danger: #b91c1c;
  --ok: #15803d;
  --warn: #a16207;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --fg: #f5f5f4;
    --muted: #a8a29e;
    --line: #292524;
    --card: #1c1917;
    --accent: #60a5fa;
    --danger: #f87171;
    --ok: #4ade80;
    --warn: #facc15;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
}
header form { margin: 0; }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
footer { max-width: 960px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.5rem; margin: 0 0 12px; overflow-wrap: anywhere; }
h2 { font-size: 1.125rem; margin: 24px 0 8px; }
h3 { font-size: 1rem; margin: 0 0 4px; }
a { color: var(--accent); }
.brand { font-weight: 700; text-decoration: none; color: var(--fg); }
code, pre { font: 0.875rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-wrap: anywhere; }
pre.secret { padding: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; white-space: pre-wrap; user-select: all; }
.meta { color: var(--muted); font-size: 0.875rem; }
.notice { padding: 8px 12px; border-left: 3px solid var(--warn); background: var(--card); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }

.list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.list li > :first-child { font-weight: 600; }
.list li .meta { flex: 1 1 100%; }
.list li form { margin: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 24px 0; }
.card h2 { margin-top: 0; }
.stack { display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 0.875rem; font-weight: 600; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 400; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; display: grid; gap: 4px; }
input:not([type="checkbox"]) {
  width: 100%;
  min-height: 44px;
  padding: 8px 10px;
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
input[type="checkbox"] { width: 20px; height: 20px; }
button,
a.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 44px;
  padding: 8px 16px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
button.link { background: none; color: var(--accent); padding: 0; min-height: 0; font-weight: 400; }
.errors { margin: 0; padding: 8px 12px 8px 28px; color: var(--danger); border: 1px solid var(--danger); border-radius: 8px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 12px; }
.filters a { padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-size: 0.875rem; }
.filters a[aria-current="page"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.badge { font-size: 0.75rem; padding: 2px 8px; border-radius: 999px; border: 1px solid currentColor; }
.badge.active { color: var(--ok); }
.badge.expired { color: var(--warn); }
.badge.disabled { color: var(--danger); }

.qr { display: block; width: 160px; height: 160px; margin: 12px 0; background: #fff; border-radius: 8px; }
.totals { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.totals strong { font-size: 1.5rem; }
.chart { margin: 0; }
.chart svg { width: 100%; height: auto; display: block; }
.chart .bar { fill: var(--accent); }
.chart .axis { stroke: var(--line); }
/* The chart's viewBox is 600 wide and drawn at ~340 px on a phone, so 20 units ≈ 11 px. */
.chart .tick { fill: var(--muted); font-size: 20px; }
.rankings { display: grid; gap: 16px; margin: 24px 0; }
.ranking table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 0.875rem; }
.ranking td { padding: 4px 0; border-bottom: 1px solid var(--line); }
.ranking td.num { width: 3.5em; text-align: right; padding-right: 8px; font-variant-numeric: tabular-nums; }
.ranking td.share { width: 30%; }
.ranking svg { width: 100%; height: 8px; display: block; }
.ranking .share-bar { fill: var(--accent); }

@media (min-width: 720px) {
  .list li .meta { flex: 1 1 auto; }
  .rankings { grid-template-columns: 1fr 1fr; }
}

details > summary { cursor: pointer; color: var(--accent); min-height: 44px; display: flex; align-items: center; }
details[open] > summary { margin-bottom: 8px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row input { flex: 1 1 200px; min-width: 0; }
.created .qr { align-self: flex-start; }