:root {
  --bg: #13131f; --card: #1c1c2e; --card-border: #2a2a45;
  --text: #cdd6f4; --muted: #6666aa; --muted2: #55556a;
  --field: #22223a; --field-border: #33334f; --accent: #5555cc; --accent2: #3535a0;
}
* { box-sizing: border-box; font-family: -apple-system, "SF Pro Text", "Segoe UI", sans-serif; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-size: 14px;
  padding: 24px;
}
body.centered { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
h1 { font-size: 26px; font-weight: 700; color: #fff; margin: 0 0 4px; }
.sub { color: var(--muted2); margin: 0 0 16px; }
.err { color: #f38ba8; margin: 0 0 12px; }
.wrap { max-width: 1040px; margin: 0 auto; }
.row { display: flex; gap: 20px; align-items: flex-start; }
.row > .col { flex: 1; min-width: 0; }
.card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 12px; padding: 18px; margin-bottom: 18px;
}
.card h2 { font-size: 12px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--muted); margin: 0 0 14px; font-weight: 700; }
label.ctrl { display: flex; align-items: center; gap: 12px; margin: 10px 0; }
label.ctrl > span:first-child { width: 92px; color: #9999bb; font-size: 13px; }
label.ctrl output { width: 44px; text-align: right; color: #9999bb;
  font-variant-numeric: tabular-nums; }
input[type=range] { flex: 1; accent-color: var(--accent); }
input[type=text], input[type=email], input[type=password], select {
  background: var(--field); border: 1px solid var(--field-border); border-radius: 8px;
  color: var(--text); padding: 9px 12px; width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
input[type=color] { width: 40px; height: 28px; padding: 0; border: 1px solid var(--field-border);
  border-radius: 6px; background: var(--field); cursor: pointer; }
.seg { display: inline-flex; border: 1px solid var(--field-border); border-radius: 8px; overflow: hidden; }
.seg button { background: var(--field); color: #9999bb; border: 0; padding: 7px 14px; cursor: pointer; }
.seg button.active { background: var(--accent2); color: #fff; }
.seg button:disabled { opacity: .4; cursor: not-allowed; }
.field-block { margin: 12px 0; }
.field-block > label { display: block; color: var(--muted); font-size: 11px;
  letter-spacing: 1px; text-transform: uppercase; margin-bottom: 6px; font-weight: 700; }
.hint { color: var(--muted2); font-size: 12px; margin-top: 4px; }
button.primary {
  width: 100%; height: 48px; background: var(--accent); color: #fff; border: 0;
  border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer; margin-top: 6px;
}
button.primary:disabled { opacity: .5; cursor: not-allowed; }
button.mini { background: var(--field); color: var(--text); border: 1px solid var(--field-border);
  border-radius: 8px; padding: 8px 12px; cursor: pointer; }
#preview-wrap { position: relative; }
canvas#preview { width: 100%; border-radius: 10px; background: #0e0e16; display: block; aspect-ratio: 16/9; }
.preview-hdr { display: flex; justify-content: space-between; align-items: center; }
#frame-time { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.presets-row { display: flex; gap: 8px; align-items: center; }
.presets-row select { flex: 1; }
#status-card { display: none; }
.bar { height: 10px; background: var(--field); border-radius: 6px; overflow: hidden; margin: 8px 0; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
#status-text { color: var(--muted); }
.dl-link { display: inline-block; margin-top: 8px; color: #89dceb; word-break: break-all; }
.login { width: 320px; text-align: center; }
.login input { margin-bottom: 12px; }
.login button { width: 100%; height: 44px; background: var(--accent); color: #fff; border: 0;
  border-radius: 10px; font-weight: 600; cursor: pointer; }
.filename { color: var(--muted2); font-size: 12px; margin-top: 4px; word-break: break-all; }

/* ── Mobile ─────────────────────────────────────────────────────────────── */
@media (max-width: 720px) {
  body { padding: 14px; }
  h1 { font-size: 22px; }
  .card { padding: 15px; margin-bottom: 14px; }

  /* Stack the two columns into one. */
  .row { flex-direction: column; gap: 0; }

  /* Let control rows wrap: label on its own line, input full-width below. */
  label.ctrl { flex-wrap: wrap; gap: 8px; margin: 14px 0; }
  label.ctrl > span:first-child { width: 100%; margin-bottom: 2px; }
  label.ctrl output { width: auto; }
  .seg { width: 100%; }
  .seg button { flex: 1; padding: 10px 8px; }

  .presets-row { flex-wrap: wrap; }
  .presets-row select { flex: 1 1 100%; }

  /* 16px inputs stop iOS Safari from auto-zooming when a field is focused. */
  input, select, textarea, button { font-size: 16px; }

  .login { width: 100%; max-width: 320px; }
}