* { box-sizing: border-box; }
html { color-scheme: light dark; }
body { margin: 0; font-family: system-ui, sans-serif; background: Canvas; color: CanvasText; }
main { width: min(760px, 100%); margin: 0 auto; padding: max(20px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom)); }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 3px; font-size: 1.4rem; }
h2 { font-size: 1.05rem; margin-bottom: 8px; }
header p, .card p { opacity: .75; }
.card { border: 1px solid color-mix(in srgb, CanvasText 18%, transparent); border-radius: 16px; padding: 16px; margin-bottom: 14px; background: color-mix(in srgb, Canvas 94%, CanvasText 6%); }
label { display: block; margin: 12px 0; font-size: .9rem; }
input { display: block; width: 100%; margin-top: 5px; border: 1px solid color-mix(in srgb, CanvasText 22%, transparent); border-radius: 10px; padding: 13px; font: inherit; background: Canvas; color: CanvasText; }
button { width: 100%; border: 0; border-radius: 12px; padding: 13px 15px; font: inherit; font-weight: 700; cursor: pointer; background: CanvasText; color: Canvas; }
button.secondary { width: auto; padding: 9px 12px; background: color-mix(in srgb, CanvasText 12%, Canvas); color: CanvasText; }
.row { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.badge { white-space: nowrap; border-radius: 999px; padding: 6px 9px; font-size: .78rem; font-weight: 700; background: color-mix(in srgb, CanvasText 12%, Canvas); }
.handoff { display: grid; gap: 7px; padding: 13px 0; border-top: 1px solid color-mix(in srgb, CanvasText 12%, transparent); }
.handoff:first-child { border-top: 0; }
.handoff span { font: .74rem ui-monospace, monospace; opacity: .65; overflow-wrap: anywhere; }
.notice { padding: 10px 12px; border-left: 3px solid CanvasText; }
.viewer { height: 58vh; min-height: 360px; margin: 12px 0; overflow: hidden; border-radius: 12px; border: 1px solid color-mix(in srgb, CanvasText 18%, transparent); background: #111; }
.viewer iframe { width: 100%; height: 100%; border: 0; }
.error { margin: 10px 0 0; min-height: 1.2em; font-size: .9rem; }
.empty { padding: 18px 0 4px; }
.hidden { display: none !important; }
@media (max-width: 520px) {
  main { padding-left: 12px; padding-right: 12px; }
  .row { align-items: center; }
  .viewer { height: 62vh; }
}