:root {
  --sk-bg: #0d1117;
  --sk-panel: #161b22;
  --sk-border: #30363d;
  --sk-accent: #2f81f7;
}
body { background: var(--sk-bg); }
.sk-layout { display: flex; min-height: 100vh; }
.sk-sidebar {
  width: 230px; background: var(--sk-panel); border-right: 1px solid var(--sk-border);
  display: flex; flex-direction: column; padding: 16px 10px; position: sticky; top: 0; height: 100vh;
}
.sk-brand { font-size: 1.25rem; font-weight: 700; margin-bottom: 18px; color: #fff; padding: 0 8px; }
.sk-brand .bi { color: var(--sk-accent); }
.sk-sidebar .nav-link { color: #adb5bd; border-radius: 6px; margin-bottom: 2px; padding: 8px 12px; }
.sk-sidebar .nav-link:hover { background: rgba(255,255,255,.05); color: #fff; }
.sk-sidebar .nav-link.active { background: var(--sk-accent); color: #fff; }
.sk-sidebar-foot { margin-top: auto; border-top: 1px solid var(--sk-border); padding-top: 10px; }
.sk-main { flex: 1; padding: 24px 28px; max-width: 1400px; }
.sk-card { background: var(--sk-panel); border: 1px solid var(--sk-border); border-radius: 10px; padding: 18px; }
.sk-stat { font-size: 2rem; font-weight: 700; line-height: 1; }
.sk-stat-label { color: #8b949e; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.status-dot { display:inline-block; width:10px; height:10px; border-radius:50%; margin-right:6px; }
.status-online { background:#3fb950; } .status-degraded { background:#d29922; }
.status-offline { background:#f85149; } .status-unknown { background:#6e7681; }
.table { --bs-table-bg: transparent; }
.card, .modal-content { background: var(--sk-panel); border-color: var(--sk-border); }
h1,h2,h3 { color: #f0f6fc; }
a { text-decoration: none; }