body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: white;
}
.app {
  max-width: 1200px;
  margin: auto;
  padding: 20px;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.badge {
  background: #22c55e;
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 12px;
}
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.card {
  background: #1e293b;
  padding: 20px;
  border-radius: 12px;
}
.card h2 {
  margin-top: 0;
}

select, button {
  width: 100%;
  margin-top: 10px;
  padding: 10px;
  border-radius: 8px;
  border: none;
}
button {
  background: #3b82f6;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #2563eb;
}

.appointment-list div {
  background: #334155;
  padding: 10px;
  margin-top: 10px;
  border-radius: 8px;
}
.empty {
  opacity: 0.6;
}

.notification {
  margin-top: 10px;
  padding: 10px;
  background: #22c55e;
  border-radius: 8px;
}

.delete-btn {
  margin-top: 10px;
  background: #ef4444;
  color: white;
  font-size: 12px;
}

.delete-btn:hover {
  background: #dc2626;
}

.secondary {
  background: #64748b;
}

.secondary:hover {
  background: #475569;
}