:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --line: #e3e5e9;
  --accent: #d93025;
  --accent-text: #ffffff;
  --ok: #188038;
  --err: #c5221f;
  --input: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1b1e24;
    --text: #e8eaed;
    --muted: #9aa0a6;
    --line: #2d3139;
    --accent: #ef5350;
    --input: #14161b;
    --ok: #81c995;
    --err: #f28b82;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 640px; margin: 0 auto; padding: 32px 16px; }
.center { min-height: 100vh; display: grid; place-items: center; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  width: 100%;
}
.narrow { max-width: 360px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
p.sub { color: var(--muted); margin: 0 0 20px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
input[type=text], input[type=password], input[type=url] {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--input);
  color: var(--text);
  font-size: 15px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
button {
  appearance: none;
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-text);
}
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); font-weight: 500; }
button:disabled { opacity: .55; cursor: wait; }
.full { width: 100%; margin-top: 16px; }
.row { display: flex; gap: 8px; }
.row input { flex: 1; }
.top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; gap: 8px; }
.top .actions { display: flex; gap: 8px; }
.top button { padding: 8px 12px; font-size: 14px; }
.msg { margin-top: 12px; font-size: 14px; min-height: 20px; }
.msg.err { color: var(--err); }
.msg.ok { color: var(--ok); }
.warn {
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  margin-bottom: 16px;
}
.video { display: flex; gap: 14px; margin: 20px 0 8px; align-items: flex-start; }
.video img { width: 160px; aspect-ratio: 16/9; object-fit: cover; border-radius: 8px; background: var(--line); flex: none; }
.video .title { font-weight: 600; }
.video .meta { color: var(--muted); font-size: 13px; }
.group { margin-top: 18px; }
.group .label { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opts button { background: transparent; color: var(--text); border: 1px solid var(--line); font-weight: 600; min-width: 84px; }
.opts button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.hidden { display: none !important; }
dialog {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--card);
  color: var(--text);
  padding: 24px;
  width: min(360px, calc(100% - 32px));
}
dialog::backdrop { background: rgba(0,0,0,.45); }
.dlg-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; }
@media (max-width: 480px) {
  .video { flex-direction: column; }
  .video img { width: 100%; }
  .row { flex-direction: column; }
}