:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --ink: #1c1e21;
  --muted: #5c6470;
  --accent: #005fcc;
  --pass: #1a7f37;
  --fail: #b35900;
  --error: #c62828;
  --border: #e2e5ea;
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  margin: 0;
  line-height: 1.55;
}

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  padding-top: 36px;
  padding-bottom: 8px;
}

.brand {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}

.tagline { color: var(--muted); margin: 4px 0 0; }

a { color: var(--accent); }

/* Form */
.audit-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin-top: 24px;
}

.audit-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

.hint { color: var(--muted); font-size: 0.9rem; margin: 0 0 12px; }

textarea {
  width: 100%;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.95rem;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  resize: vertical;
}

textarea:focus, button:focus, a:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.actions { margin-top: 16px; }

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 11px 22px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover { background: #004ba3; }

.form-error { color: var(--error); font-weight: 600; }

/* Demo note */
.demo-note {
  margin-top: 28px;
  padding: 20px 24px;
  background: #eef4ff;
  border: 1px solid #d4e2ff;
  border-radius: 10px;
}

.demo-note h2 { margin-top: 0; }

pre {
  background: #0d1117;
  color: #e6edf3;
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.85rem;
}

/* Summary */
.summary h1 { margin-bottom: 6px; }
.summary-line { color: var(--muted); }

.tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-right: 4px;
}
.tag.pass  { background: #e6f4ea; color: var(--pass); }
.tag.fail  { background: #fff3e0; color: var(--fail); }
.tag.error { background: #fdecea; color: var(--error); }

/* Result cards */
.result {
  background: var(--card);
  border: 1px solid var(--border);
  border-left-width: 5px;
  border-radius: 10px;
  padding: 18px 22px;
  margin: 16px 0;
}
.result-pass  { border-left-color: var(--pass); }
.result-fail  { border-left-color: var(--fail); }
.result-error { border-left-color: var(--error); }

.result-url {
  font-size: 1.05rem;
  font-family: ui-monospace, Consolas, monospace;
  word-break: break-all;
  margin: 0 0 8px;
}

.result-status { font-weight: 600; margin: 0 0 10px; }
.result-status.pass  { color: var(--pass); }
.result-status.fail  { color: var(--fail); }
.result-status.error { color: var(--error); }

.issues { margin: 0; padding-left: 20px; }
.issues li { margin-bottom: 12px; }

.rule {
  display: block;
  font-weight: 600;
}
.detail { color: var(--muted); }

.back { margin: 24px 0 8px; }

footer {
  margin-top: 40px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 0.9rem;
}