:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-2: #243044;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --error: #f87171;
  --info: #60a5fa;
  --radius: 12px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #1e293b 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.auth-card {
  max-width: 420px;
  margin: 10vh auto 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.brand { text-align: center; margin-bottom: 24px; }
.brand-icon { font-size: 2rem; margin-bottom: 8px; }
.brand h1 { margin: 0 0 4px; font-size: 1.35rem; }
.brand p { margin: 0; color: var(--muted); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.topbar h1 { margin: 0 0 4px; font-size: 1.5rem; }
.topbar-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.badge {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.stats-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 16px;
  font-size: 1.05rem;
}

.stat-card { text-align: center; }
.stat-card-link { padding: 0; }
.stat-link {
  display: block;
  padding: 20px;
  color: inherit;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.15s ease;
}
.stat-link:hover { background: var(--surface-2); }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-label { color: var(--muted); margin-top: 4px; }
.stat-sub { color: var(--muted); font-size: 0.78rem; margin-top: 6px; }
.stat-inline-link { color: var(--primary); text-decoration: none; }
.stat-inline-link:hover { text-decoration: underline; }

.tab-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.tab-link {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.tab-link:hover { color: var(--text); border-color: var(--primary); }
.tab-active {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--primary);
  color: var(--text);
  font-weight: 600;
}

.form label {
  display: block;
  margin-bottom: 14px;
}

.form label span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.875rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 1rem;
}

input:focus {
  outline: 2px solid rgba(59, 130, 246, 0.45);
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
  width: 100%;
}

.btn-primary:hover { background: var(--primary-hover); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover { background: var(--danger-hover); }

.btn-sm {
  padding: 6px 10px;
  font-size: 0.82rem;
}

.status-on { color: #86efac; font-weight: 600; }
.status-off { color: #fbbf24; font-weight: 600; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.form-card { max-width: 560px; }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.form-actions .btn-primary { width: auto; flex: 1; }

.checkbox-row {
  display: flex !important;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px !important;
}

.checkbox-row input[type="checkbox"] {
  width: auto;
}

.hint-card {
  margin-top: 16px;
  max-width: 560px;
}

.hint-card h3 { margin: 0 0 10px; font-size: 0.95rem; }
.hint-card ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 0.9rem; }
.hint-card li { margin-bottom: 6px; }

.inline-form, .inline-danger { display: inline; }
.inline-danger { margin-top: 12px; }

.alert {
  padding: 12px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert-success { background: rgba(34, 197, 94, 0.12); border-color: rgba(34, 197, 94, 0.35); color: #86efac; }
.alert-error { background: rgba(248, 113, 113, 0.12); border-color: rgba(248, 113, 113, 0.35); color: var(--error); }
.alert-info { background: rgba(96, 165, 250, 0.12); border-color: rgba(96, 165, 250, 0.35); color: var(--info); }

.hint, .muted, .empty-state { color: var(--muted); font-size: 0.9rem; }
.empty-state { margin: 0; }

.info-list { margin: 0 0 8px; }
.info-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.info-list dt { color: var(--muted); margin: 0; }
.info-list dd { margin: 0; text-align: right; }

code {
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); font-weight: 600; }

@media (max-width: 640px) {
  .info-list div { flex-direction: column; }
  .info-list dd { text-align: left; }
}