:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --sunken: #f2f0ea;
  --ink: #1d1c1a;
  --muted: #5f5c55;
  --line: #e2ded4;
  --accent: #2f5d50;
  --accent-ink: #ffffff;
  --code-bg: #1f2421;
  --code-ink: #e4e8e2;
  --critical: #a4161a;
  --high: #c2410c;
  --medium: #a16207;
  --low: #0e7490;
  --info: #6b7280;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 6px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141615;
    --surface: #1b1e1c;
    --sunken: #222624;
    --ink: #e6e4df;
    --muted: #a3a09a;
    --line: #2f3431;
    --accent: #7fbfa9;
    --accent-ink: #0f1311;
    --code-bg: #0e100f;
    --code-ink: #dfe4dd;
    --critical: #f87171;
    --high: #fb923c;
    --medium: #facc15;
    --low: #22d3ee;
    --info: #9ca3af;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
}

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 56px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand span { color: var(--accent); }
.site-nav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius);
  font-size: 15px;
}
.site-nav a:hover { color: var(--ink); background: var(--sunken); }
.site-nav a[aria-current="page"] { color: var(--ink); background: var(--sunken); font-weight: 600; }

/* Content */
main { padding: 40px 0 64px; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.015em; }
h1 { font-size: 2.1rem; margin: 0 0 12px; }
h2 { font-size: 1.45rem; margin: 48px 0 12px; padding-top: 8px; }
h3 { font-size: 1.1rem; margin: 28px 0 8px; }
h2 a.anchor, h3 a.anchor { color: var(--line); text-decoration: none; margin-left: 6px; }
h2:hover a.anchor, h3:hover a.anchor { color: var(--muted); }
p, ul, ol { margin: 0 0 16px; }
li { margin-bottom: 4px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }

code, kbd {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--sunken);
  padding: 1px 5px;
  border-radius: 4px;
}
pre {
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 16px 18px;
  border-radius: var(--radius);
  overflow-x: auto;
  font: 13.5px/1.55 var(--mono);
  margin: 0 0 20px;
}
pre code { background: none; padding: 0; font-size: inherit; color: inherit; }
pre .c { color: #8a948d; }
pre .sev-critical { color: #ff8a8a; font-weight: 700; }
pre .sev-high { color: #ffad6b; font-weight: 700; }
pre .sev-low { color: #67d8ee; }

.table-scroll { overflow-x: auto; margin: 0 0 20px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
td code { white-space: nowrap; }

/* Hero */
.hero { padding: 16px 0 8px; }
.hero h1 { font-size: 2.6rem; max-width: 18ch; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0 8px; }
.button {
  display: inline-block;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button:hover { text-decoration: none; filter: brightness(1.05); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 0 0 20px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.card h3 { margin-top: 0; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.note {
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 12px 16px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 0 0 20px;
}
.note p:last-child { margin-bottom: 0; }

/* Severity chips */
.sev {
  display: inline-block;
  font: 600 11px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 7px;
  border-radius: 4px;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.sev-critical { color: var(--critical); }
.sev-high { color: var(--high); }
.sev-medium { color: var(--medium); }
.sev-low { color: var(--low); }
.sev-info { color: var(--info); }

/* Rules page */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin: 24px 0 8px;
  position: sticky;
  top: 57px;
  background: var(--bg);
  padding: 10px 0;
  z-index: 5;
}
.filters input, .filters select {
  font: inherit;
  font-size: 15px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}
.filters input { flex: 1 1 220px; min-width: 0; }
.filters .count { color: var(--muted); font-size: 14px; }

.rule {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  margin: 0 0 12px;
  scroll-margin-top: 130px;
}
.rule summary {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
}
.rule summary::-webkit-details-marker { display: none; }
.rule summary .id { font: 600 14px var(--mono); min-width: 76px; }
.rule summary .title { flex: 1; font-weight: 500; }
.rule[open] summary { border-bottom: 1px solid var(--line); }
.rule .body { padding: 12px 16px 16px; }
.rule .meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; color: var(--muted); margin: 0 0 10px; }
.rule .meta b { color: var(--ink); font-weight: 600; }
.rule .fix { margin: 0; }
.rule .body a { overflow-wrap: anywhere; }
.rule .body ul { margin: 10px 0 0; padding-left: 20px; font-size: 14px; }
.rule:target { outline: 2px solid var(--accent); }
.category-heading { margin-top: 36px; }

/* phpinfo() scanner */
.scanner textarea {
  display: block;
  width: 100%;
  font: 13px/1.5 var(--mono);
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  resize: vertical;
}
.scanner-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 12px; }
.scanner-actions .count { color: var(--muted); font-size: 14px; }
.scanner button { font: inherit; font-weight: 600; font-size: 15px; cursor: pointer; }
.scanner button:disabled { opacity: 0.6; cursor: progress; }
.scan-button { padding: 10px 28px; }
select.button { font: inherit; font-weight: 600; font-size: 15px; cursor: pointer; max-width: 100%; }
.link-button { background: none; border: 0; padding: 10px 4px; color: var(--muted); }
.scanner .link-button { font-weight: 500; }
.link-button:hover { color: var(--ink); text-decoration: underline; }
.scan-options { margin-top: 12px; font-size: 15px; }
.scan-options summary { cursor: pointer; color: var(--muted); font-weight: 500; width: max-content; max-width: 100%; }
.scan-options summary:hover { color: var(--ink); }
.scan-options summary .count { font-size: 14px; font-weight: 400; margin-left: 6px; }
.scan-options[open] summary .count { display: none; }
.scanner-controls { position: static; margin: 4px 0 0; }
.file-button { cursor: pointer; }
.file-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-button:focus-within { outline: 2px solid var(--accent); }
.severity-summary { display: flex; flex-wrap: wrap; gap: 8px; }
#target th { width: 32%; text-transform: none; letter-spacing: 0; font-size: 14px; }
#target td code { white-space: pre-line; overflow-wrap: anywhere; }
#scan-version { flex: 0 1 200px; }
.rule summary a.id { text-decoration: none; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 24px 0 40px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  h1 { font-size: 1.75rem; }
  main { padding-top: 28px; }
  .site-nav { margin-left: 0; }
  .filters { top: 0; position: static; }
  .rule summary { flex-wrap: wrap; gap: 6px 10px; }
  .rule summary .title { flex-basis: 100%; }
  td code { white-space: normal; overflow-wrap: anywhere; }
  th, td { padding: 8px 6px; }
}

[hidden] { display: none !important; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}