body {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

/* === Header === */
.custom-header {
  background: linear-gradient(135deg, #1a2f4a 0%, #2a3f5a 100%);
}

.custom-header nav a {
  color: white;
  font-weight: 500;
  transition: color 0.3s ease;
}

.custom-header nav a:hover {
  color: #d87a8a;
}

/* === Botón principal === */
.custom-btn-primary {
  background: linear-gradient(135deg, #c85a6e 0%, #d87a8a 100%);
  border: none;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(200, 90, 110, 0.3);
  transition: transform 0.3s, box-shadow 0.3s;
  padding: 0.75rem 2rem;
  color: white;
}

.custom-btn-primary:hover {
  background: linear-gradient(135deg, #b54a5e 0%, #c76a7a 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 90, 110, 0.4);
}

/* === Footer === */
.custom-footer {
  background: #1a2f4a;
  color: white;
  padding: 3rem 0;
}

.custom-footer a {
  color: white;
  text-decoration: none;
  transition: color 0.3s ease;
}

.custom-footer a:hover {
  color: #d87a8a;
}