:root {
  --bg: #f3f0e8;
  --ink: #1c2430;
  --muted: #5c6675;
  --accent: #0b5f4b;
  --danger: #8b2e2e;
  --card: #fffdf8;
  --line: #d7d0c3;
  --ok: #0b5f4b;
  --warn: #8a5a00;
  --bad: #8b2e2e;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d9efe6 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #efe2c8 0%, transparent 50%),
    var(--bg);
  min-height: 100vh;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(255,253,248,.85);
  backdrop-filter: blur(6px);
}
.brand { font-weight: 700; letter-spacing: .02em; }
.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem; }
.login-panel { max-width: 420px; margin: 3rem auto; background: var(--card); padding: 1.5rem; border: 1px solid var(--line); }
.stack { display: grid; gap: .9rem; }
.row, .session-head, .userbox, .row-gap { display: flex; gap: 1rem; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.cards { display: grid; gap: .75rem; }
.cards .row, .cardish {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1rem;
}
label { display: grid; gap: .35rem; font-size: .92rem; }
input {
  width: 100%;
  padding: .55rem .7rem;
  border: 1px solid var(--line);
  background: #fff;
  font: inherit;
}
.btn {
  border: 1px solid var(--line);
  background: #fff;
  padding: .55rem .9rem;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
  color: inherit;
  display: inline-block;
}
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.ghost { background: transparent; }
.inline { display: inline; }
.muted { color: var(--muted); }
.error { color: var(--danger); }
.mono { font-family: var(--mono); }
.small { font-size: .8rem; word-break: break-all; }
.qr-panel { display: grid; place-items: center; margin: 1.5rem 0; }
.qr-box {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1rem;
  text-align: center;
}
.table { width: 100%; border-collapse: collapse; background: var(--card); }
.table th, .table td { border-bottom: 1px solid var(--line); padding: .65rem .5rem; text-align: left; font-size: .95rem; }
.badge { padding: .15rem .45rem; border: 1px solid var(--line); font-size: .8rem; }
.badge.confirmada { color: var(--ok); border-color: var(--ok); }
.badge.sospechosa { color: var(--warn); border-color: var(--warn); }
.badge.rechazada { color: var(--bad); border-color: var(--bad); }
h1, h2 { margin-top: 0; }

.scanner {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #111;
  min-height: 220px;
}
.scanner video,
.scanner canvas,
.scanner img {
  width: 100% !important;
}
.manual-fallback {
  margin-top: .5rem;
  padding-top: .75rem;
  border-top: 1px dashed var(--line);
}
.manual-fallback summary {
  cursor: pointer;
  color: var(--muted);
  margin-bottom: .75rem;
}
.result {
  padding: 1rem;
  border: 1px solid var(--line);
  background: #fff;
  min-height: 4rem;
}
.result.confirmada { border-color: var(--ok); background: #eef8f4; }
.result.sospechosa { border-color: var(--warn); background: #fff8e8; }
.result.rechazada { border-color: var(--bad); background: #fceeee; }
.result.idle { color: var(--muted); }
.ok-msg { color: var(--ok); font-weight: 600; }