:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --muted: #6b6b66;
  --line: #e6e3da;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --blocking: #dc2626;
  --important: #d97706;
  --nice: #6b7280;
  --pass: #16a34a;
  --radius: 8px;
  --max-width: 880px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
  font-weight: 600;
}
.brand:hover { text-decoration: none; }
.logo { font-size: 1.4rem; color: var(--accent); }
.brand-name { letter-spacing: -0.01em; }

nav a {
  margin-left: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.hero { padding: 2rem 0 1rem; }
.hero h1 { font-size: 2.4rem; line-height: 1.1; margin: 0 0 0.75rem; letter-spacing: -0.02em; }
.lead { font-size: 1.1rem; color: var(--ink); margin: 0 0 1.5rem; max-width: 60ch; }
.lead-small { color: var(--muted); margin: 0.25rem 0 1rem; }
.micro { color: var(--muted); font-size: 0.85rem; margin: 0.5rem 0 0; }

#scan-form {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0 0.5rem;
  max-width: 560px;
}
#scan-url {
  flex: 1;
  font: inherit;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
#scan-url:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button {
  font: inherit;
  cursor: pointer;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: var(--radius);
  font-weight: 500;
}
button:hover { filter: brightness(0.95); }
button:disabled { opacity: 0.6; cursor: progress; }
button.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

#loading .loader {
  text-align: center;
  padding: 3rem 1rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.meta-bar {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  word-break: break-all;
}

.scores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0 0 2rem;
}
@media (max-width: 600px) { .scores { grid-template-columns: 1fr; } }

.score-card {
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.score-card h2 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 0.5rem; font-weight: 600; }
.score-value { font-size: 3rem; font-weight: 700; letter-spacing: -0.04em; line-height: 1; margin: 0 0 0.5rem; }
.score-hint { font-size: 0.85rem; color: var(--muted); margin: 0; }
.score-card[data-score-band="good"] .score-value { color: var(--pass); }
.score-card[data-score-band="mid"] .score-value { color: var(--important); }
.score-card[data-score-band="poor"] .score-value { color: var(--blocking); }

.fixlist h2,
.deep-links h2,
#faq h2 { font-size: 1.4rem; margin: 2rem 0 1rem; letter-spacing: -0.01em; }

.bucket { margin: 0 0 1.5rem; }
.bucket h3 { font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 0.75rem; display: flex; align-items: center; gap: 0.5rem; }
.bucket-blocking h3 { color: var(--blocking); }
.bucket-important h3 { color: var(--important); }
.bucket-nice h3 { color: var(--nice); }
.bucket-count { font-size: 0.75rem; color: var(--muted); font-weight: 500; }
.bucket ul { list-style: none; margin: 0; padding: 0; }

.finding {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 0 0 0.75rem;
}
.bucket-blocking .finding { border-left-color: var(--blocking); }
.bucket-important .finding { border-left-color: var(--important); }
.bucket-nice .finding { border-left-color: var(--nice); }

.finding-head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.finding-status {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--line);
  color: var(--muted);
}
.finding-status[data-status="fail"] { background: #fee2e2; color: #991b1b; }
.finding-status[data-status="warn"] { background: #fef3c7; color: #92400e; }
.finding-status[data-status="pass"] { background: #dcfce7; color: #166534; }

.finding-title { font-size: 1rem; margin: 0; font-weight: 600; }
.finding-disc {
  font-size: 0.75rem;
  color: var(--muted);
  margin-left: auto;
  white-space: nowrap;
}
.finding-message { margin: 0.5rem 0 0; color: var(--ink); }
.finding-affected { font-size: 0.8rem; color: var(--muted); margin: 0.5rem 0 0; }
.finding-fix { margin: 0.75rem 0 0; }
.finding-fix summary { cursor: pointer; font-size: 0.85rem; color: var(--accent); }
.fix-snippet {
  background: #1a1a1a;
  color: #e6e6e6;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.link-row a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-size: 0.9rem;
}
.link-row a:hover { background: var(--bg); text-decoration: none; }

.pages-scanned { margin: 2rem 0; }
.pages-scanned summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; padding: 0.5rem 0; }
.pages-scanned ul { list-style: none; margin: 0.5rem 0 0; padding: 0; font-size: 0.9rem; }
.pages-scanned li { padding: 0.25rem 0; display: flex; gap: 0.5rem; align-items: baseline; }
.pages-scanned .type-tag { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.pages-scanned .you-tag { font-size: 0.7rem; color: var(--accent); font-weight: 600; }

.actions { display: flex; gap: 0.5rem; margin: 2rem 0 1rem; flex-wrap: wrap; }
.share-info { min-height: 1.5rem; }

#error .error-box {
  border: 1px solid #fecaca;
  background: #fef2f2;
  border-radius: var(--radius);
  padding: 1.25rem;
}
#error h2 { color: #991b1b; margin: 0 0 0.5rem; font-size: 1.1rem; }

#faq details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 0 0 0.5rem;
  padding: 0.75rem 1rem;
}
#faq summary { cursor: pointer; font-weight: 500; }
#faq p { margin: 0.5rem 0 0; color: var(--ink); }

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}