:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --ok: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

.login-panel {
  max-width: 380px;
  margin: 12vh auto;
  padding: 2rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.login-panel h1 { margin: 0 0 0.25rem; }
.login-panel .sub { color: var(--muted); margin-bottom: 1.5rem; }
.login-panel input {
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.login-panel button {
  width: 100%;
  padding: 0.7rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.login-panel button:hover { background: var(--accent-hover); }
.error { color: var(--danger); font-size: 0.9rem; }

#main-view { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1rem 0;
}
.brand {
  font-weight: 700;
  padding: 0 1rem 1rem;
  font-size: 1.1rem;
}
.sidebar nav { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.sidebar nav button {
  text-align: left;
  padding: 0.65rem 1rem;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.sidebar nav button.active,
.sidebar nav button:hover {
  background: rgba(59, 130, 246, 0.15);
  color: var(--text);
}
.logout {
  margin: 1rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 6px;
  cursor: pointer;
}

.content { flex: 1; padding: 1.5rem 2rem; overflow: auto; }
.tab { display: none; }
.tab.active { display: block; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.card .label { color: var(--muted); font-size: 0.85rem; }
.card .value { font-size: 1.75rem; font-weight: 700; margin-top: 0.25rem; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.toolbar h2 { margin: 0; font-size: 1.25rem; }
.toolbar button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
th { color: var(--muted); font-weight: 500; }
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
}
.badge.ok { background: rgba(34, 197, 94, 0.2); color: var(--ok); }
.badge.off { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

dialog {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  padding: 1.25rem;
  min-width: 420px;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
#modal-form label {
  display: block;
  margin: 0.5rem 0 0.25rem;
  color: var(--muted);
  font-size: 0.85rem;
}
#modal-form input, #modal-form select, #modal-form textarea {
  width: 100%;
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.modal-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}
.modal-actions button {
  padding: 0.45rem 1rem;
  border-radius: 6px;
  cursor: pointer;
}
.hint { color: var(--muted); font-size: 0.85rem; margin-top: 1rem; }
code { background: var(--bg); padding: 0.15rem 0.35rem; border-radius: 4px; }

.actions { white-space: nowrap; }
.btn-sm {
  padding: 0.25rem 0.5rem;
  margin: 0 0.15rem 0.15rem 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font-size: 0.8rem;
}
.btn-sm:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm.btn-danger { border-color: #7f1d1d; color: #fca5a5; }
.btn-sm.btn-danger:hover { background: rgba(239, 68, 68, 0.15); }