:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1c2330;
  --muted: #66707f;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --border: #dde1e7;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151a;
    --card: #1b2027;
    --text: #e8ebf0;
    --muted: #98a2b3;
    --accent: #3b82f6;
    --border: #2b323c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

main {
  width: min(640px, 100% - 2rem);
  padding: 2.5rem 0 4rem;
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 0.25rem;
}

h1 a { color: inherit; text-decoration: none; }

.subtitle {
  color: var(--muted);
  margin: 0 0 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

select, button, a.button {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.55rem 0.9rem;
  background: var(--card);
  color: var(--text);
}

button, a.button {
  cursor: pointer;
}

a.button {
  display: inline-block;
  text-decoration: none;
  white-space: nowrap;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
}

button.danger {
  color: var(--err);
  border-color: var(--err);
}

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.status {
  font-size: 0.9rem;
  color: var(--muted);
}

.status.live { color: var(--ok); font-weight: 600; }
.status.warn { color: var(--warn); }
.status.err { color: var(--err); }

.share-url {
  font-family: ui-monospace, monospace;
  font-size: 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  white-space: nowrap;
}

.lang-grid {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.lang-grid button.selected {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}

#captions {
  min-height: 8rem;
  max-height: 16rem;
  overflow-y: auto;
  line-height: 1.7;
  font-size: 1.05rem;
}

#captions .seg { opacity: 0.55; }
#captions .seg:nth-last-child(-n+8) { opacity: 1; }

.stats { font-size: 0.9rem; color: var(--muted); }

/* White padding so the code scans reliably, also in dark mode. */
.qr {
  background: #fff;
  padding: 12px;
  border-radius: 8px;
  width: fit-content;
  margin: 0.75rem auto 0.25rem;
  line-height: 0;
}

.qr svg { display: block; }

.meter {
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  overflow: hidden;
  flex: 1;
}

.meter > div {
  height: 100%;
  width: 0%;
  background: var(--ok);
  transition: width 80ms linear;
}