:root {
  --bg: #0e0f13;
  --surface: #16181f;
  --surface-2: #1c1f28;
  --border: #2a2d38;
  --text: #e6e8ee;
  --text-dim: #8b909c;
  --accent: #7c8cff;
  --sev-high: #c25560;
  --sev-medium: #f39c12;
  --sev-low: #51cf66;
}

* { box-sizing: border-box; }

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

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

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.header { margin-bottom: 2rem; }
.header h1 {
  font-size: 1.9rem;
  margin: 0 0 .25rem;
  letter-spacing: -0.01em;
}
.header .sub { color: var(--text-dim); font-size: .95rem; }

.back-link {
  display: inline-block;
  margin-bottom: 1.25rem;
  font-size: .9rem;
  color: var(--text-dim);
}

.search-box {
  width: 100%;
  margin: 1.5rem 0;
  padding: .8rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
}
.search-box:focus { border-color: var(--accent); }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}
.chip {
  padding: .35rem .8rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: .82rem;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}
.chip.active {
  background: var(--accent);
  color: #0e0f13;
  border-color: var(--accent);
}

.card {
  display: block;
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: .9rem;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--accent); text-decoration: none; }
.card-title {
  font-weight: 600;
  font-size: 1.02rem;
  margin: 0 0 .35rem;
  color: var(--text);
}
.card-desc {
  color: var(--text-dim);
  font-size: .9rem;
  margin: 0;
}

.meta-row {
  display: flex;
  gap: .5rem;
  align-items: center;
  margin-bottom: .6rem;
  flex-wrap: wrap;
}
.badge {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 6px;
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.badge.sev-high { background: var(--sev-high); color: #fff; }
.badge.sev-medium { background: var(--sev-medium); color: #1a1300; }
.badge.sev-low { background: var(--sev-low); color: #06210f; }
.tag {
  padding: .15rem .55rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .72rem;
  color: var(--text-dim);
  text-transform: lowercase;
}

.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 3rem 0;
}

.detail-title {
  font-size: 1.6rem;
  margin: 0 0 .75rem;
  line-height: 1.3;
}
.section { margin: 1.75rem 0; }
.section h2 {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin: 0 0 .5rem;
  font-weight: 600;
}
.section p { margin: 0; }

.code-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: .5rem;
}
@media (max-width: 680px) {
  .code-grid { grid-template-columns: 1fr; }
}
.code-block {
  background: #08090c;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.code-block .code-label {
  padding: .4rem .8rem;
  font-size: .72rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.code-block .code-label.before { color: var(--sev-high); }
.code-block .code-label.after { color: var(--sev-low); }
.code-block pre {
  margin: 0;
  padding: .85rem 1rem;
  overflow-x: auto;
  font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
  font-size: .82rem;
  line-height: 1.5;
  color: #d8dbe4;
  white-space: pre-wrap;
  word-break: break-word;
}
.code-empty {
  color: var(--text-dim);
  font-style: italic;
  font-size: .82rem;
  padding: .85rem 1rem;
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: .82rem;
}