/* ---------- Formulario ---------- */
.presupuesto__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: start;
}

.presupuesto__intro {
  position: sticky;
  top: 8rem;
}

.presupuesto__intro h2 {
  font-size: var(--text-h2);
  text-wrap: balance;
}

.campo {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.campo label {
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.campo__linea {
  position: relative;
}

.campo__linea::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brown-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-ui) var(--ease-out);
}

.campo__linea:focus-within::after {
  transform: scaleX(1);
}

.campo input,
.campo select,
.campo textarea {
  width: 100%;
  padding: 0.75rem 0;
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  font-weight: var(--weight-light);
  color: inherit;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  outline-offset: 6px;
}

.campo ::placeholder {
  color: color-mix(in srgb, currentColor 40%, transparent);
}

.campo select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238C6B4F' stroke-width='1.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.25rem center;
  cursor: pointer;
}

.campo textarea {
  resize: vertical;
  min-height: 6rem;
}

.campo__error {
  font-size: var(--text-small);
  color: var(--brown-700);
  display: none;
}

.campo.tiene-error .campo__error {
  display: block;
}

.campo.tiene-error input,
.campo.tiene-error select,
.campo.tiene-error textarea {
  border-bottom-color: var(--brown-700);
}

/* botón de envío a la derecha: el navpill (centrado abajo) no lo tapa */
.presupuesto__form .btn {
  display: block;
  width: fit-content;
  margin-top: var(--space-md);
  margin-left: auto;
}

.form__micro {
  margin-top: var(--space-sm);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.form__exito {
  display: none;
  font-family: var(--font-display);
  font-size: var(--text-h3);
  padding-block: var(--space-lg);
}

.presupuesto__form.enviado form {
  display: none;
}

.presupuesto__form.enviado .form__exito {
  display: block;
}

/* aviso de fallo de envío */
.form__fallo {
  margin-top: var(--space-sm);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: color-mix(in srgb, #a12a2a 18%, transparent);
  border: 1px solid color-mix(in srgb, #a12a2a 55%, transparent);
  color: var(--white);
  font-size: var(--text-small);
}
.form__fallo[hidden] {
  display: none;
}

/* honeypot */
.campo--oculto {
  position: absolute;
  left: -9999px;
}

@media (max-width: 768px) {
  .presupuesto__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .presupuesto__intro {
    position: static;
  }
}

/* Checkbox de consentimiento RGPD */
.campo--consent {
  margin-top: var(--space-sm);
}
.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  cursor: pointer;
  font-size: var(--text-small);
  line-height: 1.45;
}
.consent input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 0.15rem;
  flex-shrink: 0;
  accent-color: var(--brown-500);
  cursor: pointer;
}
.consent a {
  text-decoration: underline;
}