:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #15171c;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #6d4aff;
  --good: #15803d;
  --good-bg: #dcfce7;
  --bad: #b91c1c;
  --bad-bg: #fee2e2;
  --warn: #a16207;
  --chip: #eef0f3;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --card: #1b1e25;
    --text: #e8eaee;
    --muted: #9aa1ad;
    --line: #2a2e37;
    --accent: #9b85ff;
    --good: #4ade80;
    --good-bg: #12301f;
    --bad: #f87171;
    --bad-bg: #3a1717;
    --warn: #facc15;
    --chip: #262a33;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
a { color: inherit; text-decoration: none; }
h1 { font-size: 1.3rem; margin: 0 0 .25rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
p { margin: .25rem 0; }
.sub { color: var(--muted); font-size: .9rem; }
.warn { color: var(--warn); }

.top {
  position: sticky; top: 0; z-index: 2;
  display: flex; justify-content: space-between; align-items: center;
  padding: calc(env(safe-area-inset-top) + .5rem) 1rem .5rem;
  background: var(--card); border-bottom: 1px solid var(--line);
}
.top nav { display: flex; gap: .25rem; }
.top nav a { padding: .4rem .7rem; border-radius: 8px; color: var(--muted); font-weight: 600; }
.top nav a.on { color: var(--text); background: var(--chip); }
.top form { margin: 0; }

main { max-width: 760px; margin: 0 auto; padding: 1rem; display: grid; gap: 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }

button, .button {
  font: inherit; font-weight: 600; border: 0; border-radius: 10px; padding: .65rem 1rem;
  background: var(--chip); color: var(--text); cursor: pointer; display: inline-block;
}
button.primary { background: var(--accent); color: #fff; }
button:disabled { opacity: .6; cursor: progress; }
button.link { background: none; color: var(--muted); padding: .4rem .5rem; }

.collect { display: grid; gap: .75rem; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
@media (min-width: 640px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: .9rem; display: grid; }
.stat b { font-size: 1.6rem; }
.stat span { color: var(--muted); font-size: .85rem; }

ul { list-style: none; margin: 0; padding: 0; }
.people li, .events li, .scans li { border-top: 1px solid var(--line); }
.people li:first-child, .events li:first-child, .scans li:first-child { border-top: 0; }
.person { display: flex; gap: .75rem; align-items: center; padding: .55rem 0; min-width: 0; flex: 1; }
.person img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex: none; background: var(--chip); }
.who { display: grid; min-width: 0; }
.who .name { font-weight: 600; overflow-wrap: anywhere; }
.tag { font-size: .7rem; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 0 .3rem; }
.event { display: flex; align-items: center; gap: .5rem; }
.event .when { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.event.good .who .sub:last-child { color: var(--good); }
.event.bad .who .sub:last-child { color: var(--bad); font-weight: 600; }

.scans a { display: grid; gap: .2rem; padding: .7rem 0; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chip { background: var(--chip); border-radius: 999px; padding: .1rem .55rem; font-size: .8rem; }
.chip.good { background: var(--good-bg); color: var(--good); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.chip.warn { color: var(--warn); }

.tabs { display: flex; gap: .4rem; overflow-x: auto; scrollbar-width: none; }
.tabs a { white-space: nowrap; padding: .45rem .8rem; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: .9rem; }
.tabs a.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.search input, .login input {
  width: 100%; font: inherit; padding: .65rem .8rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
}
.login { max-width: 380px; width: 100%; margin: 12vh auto 0; }
.login form { display: grid; gap: .8rem; margin-top: .5rem; }
.login label { display: grid; gap: .3rem; font-weight: 600; }

.profile { display: flex; gap: 1rem; align-items: flex-start; }
.profile img { border-radius: 50%; width: 88px; height: 88px; object-fit: cover; flex: none; }
.profile div { display: grid; gap: .4rem; min-width: 0; }