/* style.css — self-contained dark black theme. No framework, no CDN needed. */

:root {
  --bg: #050507;
  --card: #0e0e13;
  --card-2: #14141b;
  --border: #22222c;
  --text: #e8e8ef;
  --muted: #8b8b9a;
  --blue: #38bdf8;
  --pink: #f472b6;
  --green: #34d399;
  --orange: #fb923c;
  --red: #f87171;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -10%, #101018 0%, var(--bg) 60%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.hidden { display: none !important; }

.app { max-width: 720px; margin: 0 auto; padding: 20px 16px 40px; }
.stack > * + * { margin-top: 16px; }

/* ---------- Header ---------- */
.app-header { text-align: center; margin-bottom: 24px; }
.app-header h1 {
  margin: 0 0 6px; font-size: 1.6rem; letter-spacing: -0.02em;
}
.app-header h1 span {
  background: linear-gradient(90deg, var(--blue), var(--pink));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.status { margin: 0 0 10px; font-size: .9rem; color: var(--muted); }

.pills { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .75rem; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--card);
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.pill-wait .dot { background: var(--muted); animation: pulse 1.2s infinite; }
.pill-ok   .dot { background: var(--green); }
.pill-warn .dot { background: var(--orange); }
.pill-err  .dot { background: var(--red); }
.pill-ok   { border-color: rgba(52, 211, 153, .35); }
.pill-warn { border-color: rgba(251, 146, 60, .35); }
.pill-err  { border-color: rgba(248, 113, 113, .45); }
@keyframes pulse { 50% { opacity: .3; } }

/* ---------- Layout helpers ---------- */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 420px) { .grid2 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 8px; align-items: center; }
.row.center { justify-content: center; flex-wrap: wrap; gap: 16px; }
.center-text { text-align: center; }
.small { font-size: .85rem; }
.muted { color: var(--muted); }

/* ---------- Cards ---------- */
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.card-title { margin: 0 0 12px; font-weight: 600; }

/* ---------- Buttons ---------- */
button { font: inherit; color: inherit; cursor: pointer; }

.big-btn {
  display: flex; flex-direction: column; gap: 4px; align-items: center; justify-content: center;
  padding: 22px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--card-2);
  transition: transform .08s ease, border-color .15s ease, box-shadow .15s ease;
}
.big-btn strong { font-size: 1.05rem; }
.big-btn span { font-size: .75rem; color: var(--muted); }
.big-btn:active { transform: scale(.97); }

.accent-blue:hover  { border-color: var(--blue);  box-shadow: 0 0 24px rgba(56, 189, 248, .15); }
.accent-pink:hover  { border-color: var(--pink);  box-shadow: 0 0 24px rgba(244, 114, 182, .15); }
.accent-green:hover { border-color: var(--green); box-shadow: 0 0 24px rgba(52, 211, 153, .15); }
.accent-orange:hover{ border-color: var(--orange);box-shadow: 0 0 24px rgba(251, 146, 60, .15); }

.btn {
  padding: 10px 18px; border-radius: 10px; font-weight: 600; font-size: .9rem;
  border: 1px solid var(--border); background: var(--card-2);
}
.btn.accent-pink { border-color: rgba(244, 114, 182, .5); color: var(--pink); }
.btn.ghost { color: var(--muted); }
.btn.wide { width: 100%; }
.btn:active { transform: scale(.98); }

/* ---------- Forms ---------- */
input, select {
  font: inherit; color: var(--text);
  background: #0a0a0f; border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px; outline: none;
}
input:focus, select:focus { border-color: var(--blue); }
input { flex: 1; min-width: 0; }
select { padding: 6px 8px; margin-left: 6px; }
label { color: var(--muted); }

/* ---------- QR / token ---------- */
.qr-frame {
  display: inline-block; background: #fff; padding: 10px;
  border-radius: 12px; margin: 4px auto 12px; min-width: 120px; min-height: 120px;
}
.qr-frame img { display: block; width: 220px; max-width: 60vw; image-rendering: pixelated; }
.token {
  display: block; word-break: break-all; margin-top: 6px;
  background: #0a0a0f; border: 1px solid var(--border); border-radius: 10px;
  padding: 10px; font-size: .9rem; color: var(--blue);
}

/* ---------- Camera ---------- */
video { width: 100%; border-radius: 12px; margin-bottom: 10px; background: #000; }

/* ---------- Metrics ---------- */
.metric { text-align: center; padding: 14px 10px; }
.metric h2 { margin: 0 0 10px; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
.local-h  { color: var(--blue); }
.remote-h { color: var(--pink); }
.num { margin: 6px 0 0; font-size: 1.5rem; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.num.sm { font-size: 1.05rem; }
.lbl { margin: 0; font-size: .65rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }

/* ---------- Board / chart / verdict ---------- */
.cg-wrap { width: 100%; max-width: 380px; aspect-ratio: 1 / 1; margin: 0 auto; border-radius: 8px; overflow: hidden; }
.verdict { text-align: center; font-weight: 600; min-height: 1.2em; }