/* Fortress V4.0 – Cover site: DevOps & Infrastructure Notes */
:root {
  --bg: #0d1117;
  --card: #161b22;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --border: #30363d;
  --code-bg: #21262d;
}
* { box-sizing: border-box; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 2rem 1.5rem; }
header { margin-bottom: 2rem; }
h1 { font-size: 1.5rem; font-weight: 600; color: var(--text); }
h2 { font-size: 1.15rem; margin-top: 0; }
.meta { color: var(--muted); font-size: 0.9rem; margin-top: 0.25rem; }
article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--code-bg); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.9em; }
footer { margin-top: 2rem; color: var(--muted); font-size: 0.85rem; }
nav {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
nav a { margin-right: 1.25rem; }
nav a.active { font-weight: 600; }
.error-msg { color: #f85149; }
.success-msg { color: #3fb950; }