:root {
  --primary: #0d6efd;
  --secondary: #6c757d;
  --success: #198754;
  --danger: #dc3545;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #0a58ca 100%);
}

.card {
  border: none;
  border-radius: 10px;
}

.btn {
  border-radius: 8px;
  padding: 10px 20px;
}

.btn-lg {
  padding: 15px 40px;
  font-size: 1.1rem;
}

.list-group-item {
  border-radius: 8px !important;
  margin-bottom: 10px;
  border: 1px solid #dee2e6;
}

.badge {
  padding: 5px 10px;
  font-weight: 500;
}

footer {
  margin-top: auto;
}

/* Animaciones */
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .lead {
    font-size: 1rem;
  }
}