:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --text: #1b1d21;
  --muted: #555b65;
  --line: #d9dbe0;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --allowed: #1d6b3a;
  --warned: #8a5300;
  --rejected: #555b65;
  --blocked: #b3261e;
  --focus: #1f5fbf;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1c1f24;
    --text: #e8e9ec;
    --muted: #a5aab3;
    --line: #343840;
    --accent: #7fb0ff;
    --accent-text: #0d1b33;
    --allowed: #6fd193;
    --warned: #f2b85b;
    --rejected: #a5aab3;
    --blocked: #ff8a80;
    --focus: #7fb0ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 16px;
  top: 16px;
  padding: 8px 12px;
  background: var(--surface);
  z-index: 1;
}

.masthead,
main,
.footer {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

.masthead {
  padding-top: 40px;
}

.brand {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

h1 {
  margin: 4px 0 12px;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  line-height: 1.2;
}

h2 {
  margin: 40px 0 12px;
  font-size: 1.3rem;
}

h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.lede {
  max-width: 68ch;
  color: var(--muted);
}

.attacks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.attack {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.attack p {
  flex: 1;
  margin: 0 0 16px;
  color: var(--muted);
}

button {
  align-self: flex-start;
  padding: 10px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.55;
  cursor: progress;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.summary {
  max-width: 75ch;
  font-weight: 500;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 0.92rem;
}

th,
td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
}

td:nth-child(2),
td:nth-child(4) {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.badge {
  font-weight: 700;
}

.badge::before {
  margin-right: 4px;
}

.badge-allowed {
  color: var(--allowed);
}

.badge-allowed::before {
  content: "✓";
}

.badge-warned {
  color: var(--warned);
}

.badge-warned::before {
  content: "!";
}

.badge-rejected {
  color: var(--rejected);
}

.badge-rejected::before {
  content: "×";
}

.badge-blocked {
  color: var(--blocked);
}

.badge-blocked::before {
  content: "■";
}

.detail {
  display: block;
  color: var(--muted);
}

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

.events {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.event {
  padding: 8px 12px;
  margin-bottom: 6px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--rejected);
  border-radius: 6px;
}

.event-medium {
  border-left-color: var(--warned);
}

.event-high,
.event-critical {
  border-left-color: var(--blocked);
}

.footer {
  margin-top: 48px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}