:root {
  --ink: #0f172a;
  --ink-soft: #475569;
  --bg: #f7f8fb;
  --card: #ffffff;
  --line: #e5e8f0;
  --brand: #16a34a;
  --brand-dark: #0f7a34;
  --warn: #d97706;
  --crit: #dc2626;
  --good: #16a34a;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  line-height: 1.5;
}
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 28px; max-width: 960px; margin: 0 auto;
}
.brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none;
}
.brand .mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--ink); color: #fff; font-size: 14px;
}
.cta-link {
  color: var(--brand-dark); text-decoration: none; font-weight: 600; font-size: 14px;
}
.cta-link:hover { text-decoration: underline; }

main { max-width: 720px; margin: 0 auto; padding: 0 20px 80px; }

.hero { text-align: center; padding: 48px 0 12px; }
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--brand-dark);
  margin: 0 0 12px;
}
h1 { font-size: 40px; line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
.sub { color: var(--ink-soft); font-size: 17px; max-width: 560px; margin: 0 auto 28px; }

#scan-form {
  display: flex; gap: 10px; max-width: 480px; margin: 0 auto 16px;
}
#url-input {
  flex: 1; padding: 14px 16px; border-radius: 10px; border: 1.5px solid var(--line);
  font-size: 16px; outline: none; background: var(--card);
}
#url-input:focus { border-color: var(--brand); }
#scan-btn {
  padding: 14px 22px; border-radius: 10px; border: none; background: var(--ink);
  color: #fff; font-weight: 700; font-size: 15px; cursor: pointer; white-space: nowrap;
}
#scan-btn:hover { background: #1e293b; }
#scan-btn:disabled { opacity: .6; cursor: default; }
.trust-note { font-size: 13px; color: var(--ink-soft); }
.trust-note a { color: var(--ink-soft); }

.loading { text-align: center; padding: 60px 0; }
.spinner {
  width: 36px; height: 36px; margin: 0 auto 16px;
  border: 3px solid var(--line); border-top-color: var(--brand);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading-text { color: var(--ink-soft); font-size: 14px; }

.error-box {
  background: #fef2f2; border: 1px solid #fecaca; color: #991b1b;
  padding: 14px 18px; border-radius: 10px; margin: 20px 0; font-size: 14px;
}

.result { margin-top: 20px; }
.result-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.score-wrap { display: flex; align-items: center; gap: 16px; }
.score-ring {
  width: 68px; height: 68px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 800; color: #fff; background: var(--ink-soft);
  flex-shrink: 0;
}
.score-ring.good { background: var(--good); }
.score-ring.warn { background: var(--warn); }
.score-ring.crit { background: var(--crit); }
.result-label { margin: 0; font-weight: 700; font-size: 16px; }
.result-url { margin: 2px 0 0; color: var(--ink-soft); font-size: 13px; word-break: break-all; }
.ghost-btn {
  background: none; border: 1.5px solid var(--line); border-radius: 8px;
  padding: 8px 14px; font-size: 13px; font-weight: 600; color: var(--ink); cursor: pointer;
}
.ghost-btn:hover { border-color: var(--ink); }

.findings { list-style: none; margin: 0 0 24px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.findings li {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px;
}
.findings .badge {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; color: #fff;
  margin-top: 1px;
}
.badge.critical { background: var(--crit); }
.badge.warn { background: var(--warn); }
.badge.info { background: #64748b; }
.badge.good { background: var(--good); }

.cta-panel {
  /* Fixed dark panel in BOTH themes on purpose — a branded accent block, not
     body surface. Do not switch this to var(--ink): --ink flips light in dark
     mode (it's the body-text token), which would make this panel's background
     go light while its text stays hardcoded white -- invisible. Bit us once
     in production (2026-09-09), so it's spelled out here. */
  background: #0f172a; color: #fff; border-radius: var(--radius);
  padding: 24px 26px; display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
}
.cta-title { margin: 0 0 4px; font-weight: 700; font-size: 17px; }
.cta-sub { margin: 0; color: #cbd5e1; font-size: 13.5px; max-width: 380px; }
.cta-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.cta-btn {
  padding: 11px 18px; border-radius: 8px; font-weight: 700; font-size: 14px;
  text-decoration: none; white-space: nowrap;
}
.cta-btn.primary { background: var(--brand); color: #fff; }
.cta-btn.primary:hover { background: var(--brand-dark); }
.cta-btn.ghost { background: transparent; color: #fff; border: 1.5px solid #475569; }
.cta-btn.ghost:hover { border-color: #fff; }

.how { padding: 56px 0 20px; }
.how h2 { font-size: 22px; text-align: center; margin: 0 0 28px; }
.how-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}
.how-grid h3 { font-size: 15px; margin: 0 0 6px; }
.how-grid p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

footer {
  text-align: center; padding: 30px 20px 50px; color: var(--ink-soft); font-size: 13px;
}
footer a { color: var(--ink-soft); }
footer .fine { font-size: 12px; color: #94a3b8; margin-top: 4px; }

@media (max-width: 520px) {
  h1 { font-size: 30px; }
  #scan-form { flex-direction: column; }
  .cta-panel { flex-direction: column; align-items: flex-start; }
}

/* dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f5f9; --ink-soft: #94a3b8; --bg: #0b1120; --card: #131c2e; --line: #253044;
  }
  #scan-btn { background: #f1f5f9; color: #0b1120; }
  #scan-btn:hover { background: #fff; }
  .brand .mark { background: #f1f5f9; color: #0b1120; }
}