:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --border: #e3e5e8;
  --primary: #2563eb;
  --danger: #dc2626;
  --rec: #ef4444;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #181b21;
    --text: #e8eaed;
    --muted: #9aa0a6;
    --border: #2a2e36;
    --primary: #3b82f6;
    --danger: #ef4444;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font-family: Vazirmatn, Tahoma, system-ui, sans-serif;
}
.card {
  width: 100%;
  max-width: 760px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
h1 { margin: 0 0 4px; font-size: 1.5rem; font-weight: 800; }
.muted { color: var(--muted); margin: 0; }
.small { font-size: .875rem; margin-top: 12px; min-height: 1.3em; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
  margin: 20px 0;
}
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
label { display: flex; flex-direction: column; gap: 6px; font-size: .9rem; }
label.check { flex-direction: row; align-items: center; gap: 8px; }
select, button {
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
select:disabled, input:disabled { opacity: .5; }

.preview-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}
video { width: 100%; height: 100%; object-fit: contain; display: block; }
.placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: #888; font-size: .9rem;
}
.badge {
  position: absolute; top: 10px; left: 10px;
  background: rgba(0,0,0,.65); color: #fff;
  padding: 4px 10px; border-radius: 999px;
  font-size: .85rem; direction: ltr;
  display: flex; align-items: center; gap: 6px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--rec); animation: blink 1s infinite; }
.paused .dot { animation: none; background: #facc15; }
@keyframes blink { 50% { opacity: .2; } }

.actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
button { cursor: pointer; font-weight: 600; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.download { display: inline-block; margin-top: 8px; color: var(--primary); }
[hidden] { display: none !important; }