:root {
  --bg: #fafafb;
  --panel: #ffffff;
  --panel-2: #f3f4f7;
  --border: #d8dbe2;
  --text: #14161a;
  --muted: #5a6068;
  --accent: #2a5cd1;
  --accent-fg: #ffffff;
  --code-bg: #f1f2f5;

  --sev-critical: #d93025;
  --sev-high: #e8731a;
  --sev-medium: #e0b800;
  --sev-low: #2e8b57;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  font-size: 16px;
}

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

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-title { font-weight: 600; color: var(--text); }
.site-header nav a { margin-left: 1.25rem; color: var(--muted); }
.site-header nav a:hover { color: var(--text); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

.intro h1 { margin: 0 0 0.25rem; font-size: 1.6rem; }
.intro p { color: var(--muted); margin-top: 0; }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
  margin: 1.5rem 0 2rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.filters fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

.filters legend {
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0 0.4rem;
}

.filters label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.92rem;
  cursor: pointer;
}

.filters button {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  font-size: 0.9rem;
  margin-left: auto;
}

.filters button:hover { color: var(--text); border-color: var(--text); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.threat-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text);
  transition: border-color 0.12s ease, transform 0.12s ease;
}

.threat-card:hover {
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}

.threat-card[hidden] { display: none; }

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.card-head h3 { margin: 0; font-size: 1.05rem; }

.threat-card p {
  margin: 0.25rem 0 0.75rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }

.chip {
  display: inline-block;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

.severity {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--accent-fg);
  white-space: nowrap;
}

.sev-critical { background: var(--sev-critical); color: #ffffff; }
.sev-high     { background: var(--sev-high);     color: #1c1c1c; }
.sev-medium   { background: var(--sev-medium);   color: #1c1c1c; }
.sev-low      { background: var(--sev-low);      color: #ffffff; }

a.severity:hover { text-decoration: none; filter: brightness(1.08); }

.severity-tier { margin-top: 1.75rem; scroll-margin-top: 4rem; }
.severity-tier .detail-head { margin: 0 0 0.5rem; }
.severity-tier h2 {
  margin: 0;
  font-size: 1.2rem;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text);
  border-bottom: 0;
  padding-bottom: 0;
}
.cvss-band { color: var(--muted); font-size: 0.92rem; margin-top: 0.5rem; }

.empty-state {
  color: var(--muted);
  text-align: center;
  padding: 2rem;
}

.detail .breadcrumb { color: var(--muted); margin: 0 0 1rem; }

.detail-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 0.25rem;
}

.detail-head h1 { margin: 0; font-size: 1.7rem; }

.threat-id { color: var(--muted); margin: 0 0 0.5rem; }
.aliases { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.5rem; }
.lede { font-size: 1.05rem; margin-top: 0.75rem; }

.detail h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
}

.kv { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.kv th, .kv td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.kv th { color: var(--muted); font-weight: 500; }

.controls {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1rem;
  margin: 0;
}
.controls dt { color: var(--muted); }
.controls dd { margin: 0; }

.inline-list, .refs { list-style: none; padding: 0; margin: 0; }
.inline-list li { display: inline-block; margin-right: 0.5rem; }
.refs li { padding: 0.25rem 0; word-break: break-all; }

.empty { color: var(--muted); font-style: italic; }

.code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.45;
}

@media (max-width: 600px) {
  .site-header { padding: 0.75rem 1rem; }
  main { padding: 1.25rem 1rem 3rem; }
  .filters { flex-direction: column; align-items: stretch; }
  .filters button { margin-left: 0; }
}