:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --panel-2: #232d3a;
  --border: #2f3b4a;
  --text: #e8eef5;
  --muted: #93a4b8;
  --accent: #3d9cf0;
  --accent-2: #2a7fc9;
  --ok: #3ecf8e;
  --warn: #e6b84d;
  --err: #ef6b6b;
  --radius: 10px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a3050 0%, transparent 50%),
              radial-gradient(900px 500px at 100% 0%, #163528 0%, transparent 45%),
              var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: rgba(18, 24, 32, 0.92);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  padding: 0 0.5rem;
}
.brand span { color: var(--accent); }
.nav a {
  display: block;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  color: var(--muted);
  margin-bottom: 0.25rem;
}
.nav a:hover, .nav a.active {
  background: var(--panel-2);
  color: var(--text);
  text-decoration: none;
}
.sidebar-foot {
  margin-top: 2rem;
  padding: 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.main { padding: 1.75rem 2rem 3rem; }
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.page-head h1 { margin: 0; font-size: 1.5rem; font-weight: 650; }

.card {
  background: rgba(26, 34, 44, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.grid { display: grid; gap: 1rem; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
}

.stat-label { color: var(--muted); font-size: 0.85rem; }
.stat-value { font-size: 1.75rem; font-weight: 700; margin-top: 0.25rem; }

label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
input, select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.9rem;
  font: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(61, 156, 240, 0.35);
  border-color: var(--accent);
}
.row { display: flex; gap: 0.75rem; flex-wrap: wrap; align-items: center; }
.btn {
  appearance: none;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 0.6rem 1rem;
  cursor: pointer;
}
.btn:hover { background: var(--accent-2); }
.btn.secondary { background: var(--panel-2); border: 1px solid var(--border); }
.btn.danger { background: #a33b3b; }
.btn.small { padding: 0.35rem 0.7rem; font-size: 0.85rem; }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td {
  text-align: left;
  padding: 0.7rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.table th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 650;
}
.badge.ok { background: rgba(62, 207, 142, 0.15); color: var(--ok); }
.badge.warn { background: rgba(230, 184, 77, 0.15); color: var(--warn); }
.badge.err { background: rgba(239, 107, 107, 0.15); color: var(--err); }
.badge.muted { background: rgba(147, 164, 184, 0.15); color: var(--muted); }

.flash {
  padding: 0.85rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}
.flash.success { background: rgba(62, 207, 142, 0.12); border-color: rgba(62, 207, 142, 0.35); }
.flash.error { background: rgba(239, 107, 107, 0.12); border-color: rgba(239, 107, 107, 0.35); }

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}
.auth-card {
  width: min(420px, 100%);
  background: rgba(26, 34, 44, 0.95);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem;
}
.auth-card h1 { margin-top: 0; font-size: 1.35rem; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: 0.85rem; word-break: break-all; }
.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li {
  display: flex;
  justify-content: space-between;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
}
.secret-banner {
  background: rgba(230, 184, 77, 0.12);
  border: 1px solid rgba(230, 184, 77, 0.4);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}