:root {
  color-scheme: dark;
  --ink: #f4f8ff;
  --muted: #9eafc7;
  --navy: #07162b;
  --panel: #0c2444;
  --panel-2: #102d52;
  --line: rgba(190, 211, 239, .17);
  --cyan: #73d7ff;
  --orange: #ffb12f;
  --green: #55e5a8;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-width: 320px; min-height: 100vh; color: var(--ink);
  background: radial-gradient(circle at 10% -10%, rgba(37,139,210,.25), transparent 34rem), var(--navy);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, select, a { font: inherit; }
.shell { width: min(1320px, calc(100% - 36px)); margin: 0 auto; padding: 16px 0 22px; }
.control-bar { display: flex; align-items: flex-end; flex-wrap: wrap; gap: 14px 24px; margin-bottom: 16px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.035); }
.control-group, .track-picker { display: grid; gap: 7px; }
.control-label { color: var(--muted); font-size: .7rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.segmented { display: inline-flex; padding: 4px; border: 1px solid var(--line); border-radius: 12px; background: rgba(2,12,27,.5); }
.segment { min-height: 40px; padding: 0 15px; color: var(--muted); border: 0; border-radius: 9px; background: transparent; cursor: pointer; }
.segment:hover { color: var(--ink); }
.segment.is-active { color: #101722; background: var(--orange); font-weight: 800; box-shadow: 0 5px 16px rgba(255,177,47,.18); }
.segment:focus-visible, select:focus-visible, a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.track-picker[hidden] { display: none; }
select { min-width: 110px; height: 48px; padding: 0 36px 0 13px; color: var(--ink); border: 1px solid var(--line); border-radius: 11px; background: var(--panel); cursor: pointer; }
.screen-card { overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(145deg, var(--panel-2), var(--panel)); box-shadow: 0 28px 80px rgba(0,0,0,.34); }
.screen-frame { position: relative; width: 100%; aspect-ratio: 16 / 9; min-height: 360px; background: #020712; }
.screen-frame iframe { position: relative; z-index: 2; width: 100%; height: 100%; border: 0; background: #020712; }
.loading { position: absolute; inset: 0; z-index: 1; display: grid; place-content: center; grid-auto-flow: column; align-items: center; gap: 10px; color: var(--muted); font-size: .9rem; }
.loading span { width: 17px; height: 17px; border: 2px solid rgba(115,215,255,.25); border-top-color: var(--cyan); border-radius: 50%; animation: spin .8s linear infinite; }
.screen-frame.is-loaded .loading { display: none; }
footer { padding: 16px 4px 0; color: var(--muted); font-size: .78rem; line-height: 1.5; }
footer p { margin: 0; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 720px) {
  .shell { width: min(100% - 20px, 1320px); padding-top: 8px; }
  .control-bar { gap: 14px; padding: 13px; }
  .control-group { width: 100%; }
  .segmented { display: grid; grid-template-columns: 1fr 1fr; }
  .segment { padding: 0 10px; }
  .track-picker { flex: 1 1 auto; }
  select { width: 100%; }
  .screen-frame { min-height: 0; aspect-ratio: 9 / 16; }
  .screen-frame.is-landscape { aspect-ratio: 16 / 9; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}