/* Formulario de contacto - Mobile first */
.contact-section {
  padding: 4rem 1.5rem;
  background: #f8f9fc;
}

.contact-container {
  max-width: 720px;
  margin: 0 auto;
}

.contact-section h2 {
  font-size: 1.75rem;
  color: #1a1a2e;
  margin: 0 0 0.5rem;
}

.contact-subtitle {
  color: #666;
  margin: 0 0 2rem;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 600px) {
  .contact-form .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #4361ee;
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.form-group input.is-error,
.form-group textarea.is-error {
  border-color: #dc2626;
}

.field-error {
  display: block;
  color: #dc2626;
  font-size: 0.8rem;
  margin-top: 0.25rem;
  min-height: 1rem;
}

.form-alert {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.form-alert.is-success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.form-alert.is-error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: #4361ee;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-submit:hover:not(:disabled) {
  background: #3451d1;
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}