:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --line: #dfe5ec;
  --line-strong: #c9d3df;
  --text: #172033;
  --muted: #667085;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff6ff;
  --danger: #b42318;
  --danger-soft: #fff4f2;
  --success: #176b51;
  --success-soft: #ecfdf3;
  --shadow: 0 18px 50px rgba(23, 32, 51, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--text); background: var(--bg); }
button, input { font: inherit; }

.topbar {
  width: min(1080px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-size: 1.05rem; font-weight: 750; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: #fff; background: var(--blue); border-radius: 10px; }
.permission-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; color: #475467; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: .82rem; }
.permission-badge i { width: 7px; height: 7px; background: #12b76a; border-radius: 50%; }

main { width: min(980px, calc(100% - 40px)); margin: 0 auto; padding: 58px 0 40px; }
.workspace { max-width: 820px; margin: 0 auto; }
.workspace-heading { max-width: 690px; margin: 0 auto 26px; text-align: center; }
.eyebrow { display: block; margin-bottom: 9px; color: var(--blue); font-size: .76rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 14px; font-size: clamp(2.15rem, 5vw, 3.65rem); line-height: 1.05; letter-spacing: -.05em; }
.workspace-heading p { max-width: 660px; margin: 0 auto; color: var(--muted); font-size: 1rem; line-height: 1.65; }

.finder-card { padding: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.finder-card > label:first-child { display: block; margin-bottom: 9px; color: #344054; font-size: .9rem; font-weight: 700; }
.url-row { display: grid; grid-template-columns: 28px minmax(0,1fr) auto; align-items: center; gap: 8px; min-height: 60px; padding: 6px; background: #fff; border: 1px solid var(--line-strong); border-radius: 12px; transition: border-color .18s, box-shadow .18s; }
.url-row:focus-within { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(37,99,235,.11); }
.link-icon { display: grid; place-items: center; color: var(--blue); font-size: 1.2rem; font-weight: 800; }
.url-row input { width: 100%; min-height: 46px; color: var(--text); background: transparent; border: 0; outline: 0; font-size: 1rem; }
.url-row input::placeholder { color: #98a2b3; }
.url-row button { min-height: 46px; padding: 0 22px; color: #fff; background: var(--blue); border: 0; border-radius: 9px; font-weight: 750; cursor: pointer; transition: background .18s, transform .18s; }
.url-row button:hover { background: var(--blue-dark); transform: translateY(-1px); }
.url-row button:focus-visible, .quality-card a:focus-visible { outline: 3px solid rgba(37,99,235,.28); outline-offset: 2px; }
.url-row button:disabled { opacity: .65; cursor: wait; transform: none; }
.form-note { margin: 12px 0 0; color: #7b8797; font-size: .82rem; line-height: 1.5; }

.status { margin-top: 16px; padding: 14px 16px; color: #2459a9; background: var(--blue-soft); border: 1px solid #bfd3f9; border-radius: 11px; line-height: 1.5; }
.status.error { color: var(--danger); background: var(--danger-soft); border-color: #f7c8c3; }
.status.success { color: var(--success); background: var(--success-soft); border-color: #a6e7c8; }
.results { margin-top: 24px; padding: 22px; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 10px 32px rgba(23,32,51,.05); }
.results-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 16px; }
.results h2 { margin: 0; font-size: 1.55rem; letter-spacing: -.03em; }
.source-host { max-width: 280px; overflow: hidden; color: #667085; font-size: .82rem; text-overflow: ellipsis; white-space: nowrap; }
.quality-list { display: grid; gap: 10px; }
.quality-card { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 15px; background: #f9fafb; border: 1px solid var(--line); border-radius: 11px; }
.quality-card div { display: grid; gap: 4px; }
.quality-card strong { font-size: 1rem; }
.quality-card span { color: #667085; font-size: .82rem; }
.quality-card a { flex: 0 0 auto; padding: 10px 14px; color: #fff; background: var(--blue); border-radius: 8px; font-size: .86rem; font-weight: 750; text-decoration: none; }
.quality-card a:hover { background: var(--blue-dark); }

.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 54px; }
.support-grid article { padding: 22px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.number { color: var(--blue); font-size: .74rem; font-weight: 850; letter-spacing: .1em; }
.support-grid h2 { margin: 24px 0 8px; font-size: 1.05rem; }
.support-grid p, .limits-card p { margin-bottom: 0; color: var(--muted); line-height: 1.6; }
.limits-card { display: grid; grid-template-columns: .8fr 1.2fr; gap: 38px; margin-top: 14px; padding: 25px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.limits-card h2 { margin-bottom: 0; font-size: 1.35rem; letter-spacing: -.03em; }

footer { width: min(980px, calc(100% - 40px)); margin: 0 auto; padding: 26px 0 34px; display: flex; justify-content: space-between; gap: 18px; color: #7b8797; border-top: 1px solid var(--line); font-size: .82rem; }
footer span { color: #344054; font-weight: 750; }
footer p { margin: 0; }

@media (max-width: 720px) {
  .topbar, main, footer { width: min(100% - 28px, 980px); }
  .topbar { min-height: 64px; }
  main { padding-top: 40px; }
  .permission-badge { padding: 7px 9px; font-size: .72rem; }
  h1 { font-size: clamp(2.05rem, 11vw, 3rem); }
  .finder-card, .results { padding: 17px; border-radius: 14px; }
  .url-row { grid-template-columns: 25px minmax(0,1fr); }
  .url-row button { grid-column: 1 / -1; width: 100%; }
  .results-heading, .quality-card { align-items: flex-start; flex-direction: column; }
  .quality-card a { width: 100%; text-align: center; }
  .support-grid { grid-template-columns: 1fr; margin-top: 38px; }
  .limits-card { grid-template-columns: 1fr; gap: 14px; }
  footer { flex-direction: column; }
}

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