:root {
  --bg: #090b10;
  --card: #121826;
  --card-border: #1f2940;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --success: #22c55e;
  --warning: #f97316;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, rgba(79, 70, 229, 0.35), transparent 45%), var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.hidden {
  display: none;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 1.7rem;
}

p {
  margin: 0.4rem 0;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
}

input[type='password'] {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--card-border);
  background: #0f1421;
  color: var(--text);
  margin-bottom: 1rem;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.2s ease, opacity 0.2s ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.primary {
  background: var(--primary);
  color: #fff;
}

.primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.danger {
  background: var(--danger);
  color: #fff;
}

.danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

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

.ghost:hover {
  color: var(--text);
  border-color: var(--primary);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat-card {
  padding: 1.25rem;
  border-radius: 0.9rem;
  background: #0f1729;
  border: 1px solid var(--card-border);
}

.label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.value {
  font-size: 2.8rem;
  font-weight: 700;
  margin: 0.4rem 0;
}

.subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

.status.online {
  color: var(--success);
}

.status.offline {
  color: var(--danger);
}

.status.idle {
  color: var(--warning);
}

.actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.actions button {
  flex: 1;
}

.error {
  color: var(--danger);
  font-weight: 500;
}

.message {
  min-height: 1.5rem;
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.error-message {
  color: var(--danger);
  font-weight: 600;
}