/* admin-server dashboard — minimal, monospace-leaning, no JS. */
:root {
  --bg: #0d1117;
  --panel: #161b22;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --ok: #3fb950;
  --fail: #f85149;
  --border: #30363d;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 14px; }
.topbar { display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border); }
.brand { font-weight: 600; font-size: 15px; color: var(--text); text-decoration: none; }
.topnav { display: flex; gap: 16px; align-items: center; }
.topnav a { color: var(--muted); text-decoration: none; }
.topnav a:hover { color: var(--text); }
.topnav .logout { margin: 0; }
.topnav .logout button { background: transparent; border: 1px solid var(--border);
  color: var(--muted); padding: 4px 10px; border-radius: 4px; cursor: pointer; font-size: 12px; }
.topnav .logout button:hover { color: var(--text); border-color: var(--muted); }
.content { max-width: 1100px; margin: 24px auto; padding: 0 20px; }
.footer { text-align: center; color: var(--muted); padding: 20px; font-size: 12px; }
h1 { margin-top: 0; font-size: 22px; }

/* Tiles */
.tile-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.tile { background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 16px; text-decoration: none; color: var(--text); transition: border-color 120ms ease; }
.tile:hover { border-color: var(--accent); }
.tile-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.tile-value { font-size: 28px; margin-top: 6px; font-variant-numeric: tabular-nums; }
.tile-sub   { color: var(--muted); font-size: 12px; margin-top: 4px; font-variant-numeric: tabular-nums; }

/* Drill-down metric page */
.window-selector { display: flex; gap: 12px; margin: 0 0 18px; font-size: 13px; }
.window-selector a { color: var(--muted); text-decoration: none; padding: 4px 10px; border-radius: 4px;
  border: 1px solid var(--border); }
.window-selector a:hover { color: var(--text); border-color: var(--muted); }
.window-selector .window-active { color: var(--text); padding: 4px 10px; border-radius: 4px;
  border: 1px solid var(--accent); background: rgba(88,166,255,0.08); }
.metric-card { background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 18px; display: flex; gap: 22px; align-items: center; }
.metric-latest { min-width: 110px; }
.metric-label  { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; }
.metric-value  { font-size: 28px; margin-top: 4px; font-variant-numeric: tabular-nums; }
.sparkline     { width: 100%; max-width: 600px; height: 120px; display: block; }
.sparkline-dot { transition: fill-opacity 80ms ease; }
.sparkline-dot:hover { fill-opacity: 1; }
.metric-extras { display: flex; gap: 14px; margin-top: 14px; }
.metric-extra  { flex: 1; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 14px; }
.metric-bytes  { margin-top: 14px; color: var(--text); }
.metric-bytes .metric-value { font-size: 16px; margin-left: 8px; }

/* Tables */
table.data { width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
table.data th, table.data td { padding: 10px 14px; text-align: left;
  border-bottom: 1px solid var(--border); font-variant-numeric: tabular-nums; }
table.data th { color: var(--muted); font-weight: 500; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em; background: #11161d; }
table.data tr:last-child td { border-bottom: none; }
.empty { color: var(--muted); font-style: italic; }
.muted { color: var(--muted); }
.ok { color: var(--ok); font-weight: 600; }
.fail { color: var(--fail); font-weight: 600; }

/* Login card */
.login-card { max-width: 360px; margin: 80px auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: 8px; padding: 28px; }
.login-card h1 { margin: 0 0 8px; font-size: 20px; }
.login-card .hint { color: var(--muted); margin-top: 0; }
.login-card label { display: block; color: var(--muted); margin: 16px 0 6px; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.04em; }
.login-card input { width: 100%; background: var(--bg); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text); padding: 10px 12px; font-size: 14px; }
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button { margin-top: 16px; width: 100%; background: var(--accent); border: none;
  border-radius: 4px; color: #0d1117; padding: 10px; font-weight: 600; cursor: pointer; }
.login-card .login-error { color: var(--fail); margin: 12px 0 0; font-size: 13px; }