:root {
  color-scheme: dark;
  --background: #090d16;
  --surface: #111827;
  --surface-raised: #172033;
  --line: #27344d;
  --text: #f7f8fc;
  --muted: #a7b1c5;
  --accent: #76e4c4;
  --accent-strong: #33caa5;
  --warning: #f7c66d;
  --error: #ff8f9c;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 75% 10%, #152440 0, transparent 32rem), var(--background); color: var(--text); }
a { color: inherit; }
button, input { font: inherit; }
.site-header, main, footer { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.site-header { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 760; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; color: #06130f; background: var(--accent); font-size: 14px; }
.privacy-badge { color: var(--accent); border: 1px solid #285b51; border-radius: 99px; padding: 7px 12px; font-size: 13px; }
.hero { padding: 88px 0 72px; max-width: 880px; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 13px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1 { margin: 0; max-width: 820px; font-size: clamp(44px, 7vw, 78px); line-height: .98; letter-spacing: -.055em; }
.lede { max-width: 680px; margin: 28px 0 38px; color: var(--muted); font-size: clamp(18px, 2.3vw, 22px); line-height: 1.55; }
.scan-form label { display: block; margin-bottom: 10px; font-weight: 720; }
.input-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; padding: 8px; border: 1px solid var(--line); border-radius: 17px; background: rgba(17, 24, 39, .88); box-shadow: 0 24px 70px rgba(0, 0, 0, .28); }
input { min-width: 0; border: 0; outline: 0; color: var(--text); background: transparent; padding: 13px 14px; }
input::placeholder { color: #69758d; }
button, .action-link { border: 0; border-radius: 11px; padding: 13px 18px; color: #06130f; background: var(--accent); font-weight: 780; text-decoration: none; cursor: pointer; transition: background .15s ease, transform .15s ease; }
button:hover, .action-link:hover { background: var(--accent-strong); transform: translateY(-1px); }
button:disabled { cursor: default; opacity: .55; transform: none; }
.field-note { margin: 10px 2px 0; color: var(--muted); font-size: 13px; }
.status-panel { display: flex; align-items: center; gap: 12px; margin: 0 0 30px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 13px; color: var(--muted); background: var(--surface); }
.status-panel p { margin: 0; }
.status-panel.error { color: var(--error); border-color: #5e303a; }
.spinner { width: 17px; height: 17px; border: 2px solid #43516b; border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
.spinner[hidden] { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.results { padding: 38px 0 78px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
h2 { margin: 0; font-size: clamp(30px, 4vw, 46px); letter-spacing: -.04em; }
.origin { margin: 0; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; }
.video-list { display: grid; gap: 18px; }
.video-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: rgba(17, 24, 39, .94); }
.video-summary { display: flex; align-items: start; justify-content: space-between; gap: 20px; padding: 23px; }
.video-title { margin: 0 0 8px; font-size: 20px; line-height: 1.35; }
.video-meta, .format-count { margin: 0; color: var(--muted); font-size: 13px; }
.format-count { white-space: nowrap; border: 1px solid var(--line); border-radius: 99px; padding: 6px 10px; }
.format-list { border-top: 1px solid var(--line); }
.format-row { display: grid; grid-template-columns: 130px minmax(0, 1fr) auto; align-items: center; gap: 18px; min-height: 72px; padding: 13px 20px; border-bottom: 1px solid var(--line); }
.format-row:last-child { border-bottom: 0; }
.format-quality { font-weight: 800; }
.format-detail { overflow-wrap: anywhere; color: var(--muted); font-size: 13px; }
.format-action { display: flex; align-items: center; justify-content: end; gap: 10px; }
.extension-button { color: var(--text); background: var(--surface-raised); border: 1px solid #384764; }
.extension-button:hover { background: #22304a; }
.action-reason { max-width: 150px; color: var(--warning); font-size: 11px; line-height: 1.3; }
.how-it-works { padding: 80px 0 100px; border-top: 1px solid var(--line); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.steps article { border: 1px solid var(--line); border-radius: 16px; padding: 23px; background: rgba(17, 24, 39, .7); }
.steps span { color: var(--accent); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
.steps h3 { margin: 28px 0 8px; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); line-height: 1.55; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

@media (max-width: 720px) {
  .privacy-badge { display: none; }
  .hero { padding-top: 55px; }
  .input-row { grid-template-columns: 1fr; }
  .input-row button { width: 100%; }
  .section-heading { align-items: start; flex-direction: column; }
  .format-row { grid-template-columns: 1fr; gap: 8px; padding: 18px; }
  .format-action { align-items: start; justify-content: start; flex-direction: column; }
  .steps { grid-template-columns: 1fr; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}