/* ════════════════════════════════════════
   FORM — Sección Registro:
   contenedor blanco, grid 2 col,
   inputs, checkbox, botón submit,
   mensajes éxito/error
   ════════════════════════════════════════ */

#registro {
  padding: 5rem 2rem;
  background: var(--gray-light);
}

.form-container {
  max-width: 780px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 20px;
  padding: 3rem;
  box-shadow: 0 8px 40px rgba(0,0,0,0.1);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* Campos que ocupan las 2 columnas */
.form-group.full-width { grid-column: 1 / -1; }

.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gray-dark);
  font-family: 'Poppins', sans-serif;
}

/* Asterisco de campo obligatorio */
.form-group label .req { color: var(--orange); margin-left: 2px; }

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.7rem 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 10px;
  font-family: 'Lato', sans-serif;
  font-size: 0.95rem;
  color: var(--gray-dark);
  transition: border-color 0.2s, box-shadow 0.2s;
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255,140,0,0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Fila del checkbox de términos */
.checkbox-group {
  grid-column: 1 / -1;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: var(--orange);
}

.checkbox-group label {
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.5;
}

.checkbox-group label a {
  color: var(--orange);
  text-decoration: underline;
}

/* Botón de envío */
.btn-submit {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
  color: var(--white);
  border: none;
  padding: 1rem 2rem;
  border-radius: 30px;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  box-shadow: 0 4px 15px rgba(255,140,0,0.4);
  margin-top: 0.5rem;
}

.btn-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255,140,0,0.5);
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Mensaje de resultado del formulario */
.form-message {
  grid-column: 1 / -1;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  display: none;
}

.form-message.success {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #a5d6a7;
  display: block;
}

.form-message.error {
  background: #ffebee;
  color: #c62828;
  border: 1px solid #ef9a9a;
  display: block;
}