:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --panel2: #243044;
  --text: #e7ecf3;
  --muted: #8b9bb4;
  --accent: #3d8bfd;
  --accent2: #2ecc71;
  --danger: #e74c3c;
  --warn: #f39c12;
  --border: #2d3a4f;
  --radius: 10px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: linear-gradient(160deg, #0b1017 0%, #152033 50%, #0f1419 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
}
.sidebar {
  width: 230px;
  background: rgba(15, 20, 30, 0.95);
  border-right: 1px solid var(--border);
  padding: 1.2rem 0.8rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.8rem 1.2rem;
  font-size: 1.1rem;
}
.sidebar nav { display: flex; flex-direction: column; gap: 0.2rem; flex: 1; }
.sidebar a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  font-size: 0.92rem;
}
.sidebar a:hover, .sidebar a.active {
  background: var(--panel2);
  color: var(--text);
}
.userbox {
  border-top: 1px solid var(--border);
  padding: 1rem 0.8rem 0.4rem;
  font-size: 0.85rem;
}
.uname { font-weight: 600; }
.urole { color: var(--muted); margin: 0.2rem 0 0.6rem; }
.logout { color: var(--danger) !important; padding: 0 !important; }
.content { flex: 1; padding: 1.5rem 2rem; max-width: 1200px; }
.content.full { max-width: none; margin: 0 auto; }
h1 { margin: 0 0 1rem; font-size: 1.55rem; }
h2 { margin: 1.5rem 0 0.8rem; font-size: 1.15rem; }
.muted { color: var(--muted); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}
.card .label { color: var(--muted); font-size: 0.85rem; }
.card .value { font-size: 1.6rem; font-weight: 700; margin-top: 0.3rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: var(--panel); }
th, td { padding: 0.65rem 0.8rem; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { background: var(--panel2); color: var(--muted); font-weight: 600; }
tr:hover td { background: rgba(61, 139, 253, 0.06); }
.btn, button, input[type=submit] {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
}
.btn.secondary { background: var(--panel2); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }
.btn.success { background: var(--accent2); }
.btn.sm { padding: 0.3rem 0.55rem; font-size: 0.8rem; }
form.inline { display: inline; }
.form-row { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 0.8rem; align-items: end; }
label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; color: var(--muted); }
input, select, textarea {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 0.5rem 0.65rem;
  font-size: 0.9rem;
  min-width: 160px;
}
textarea { min-width: 280px; min-height: 80px; }
.flash {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}
.flash.ok { background: rgba(46, 204, 113, 0.15); border: 1px solid var(--accent2); }
.flash.error { background: rgba(231, 76, 60, 0.15); border: 1px solid var(--danger); }
.flash.warn { background: rgba(243, 156, 18, 0.15); border: 1px solid var(--warn); }
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  width: min(420px, 92vw);
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-card h1 { margin-bottom: 0.4rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--panel2);
}
.badge.on { background: rgba(46,204,113,0.2); color: #7ddea8; }
.badge.off { background: rgba(231,76,60,0.2); color: #f5a39b; }
.pre {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  white-space: pre-wrap;
  font-family: ui-monospace, monospace;
  font-size: 0.82rem;
  max-height: 480px;
  overflow: auto;
}
@media (max-width: 800px) {
  body { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: relative; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
}