/* ========================================
   FORMULARIO — CAMPOS, LABELS, ESTADOS
   Componente reusable (el contenedor de la sección de contacto
   vive en css/sections/contact.css).
   Label flotante real (label asociado con for/id, no placeholder):
   arranca superpuesto al valor y sube cuando el campo tiene foco
   o contenido (:not(:placeholder-shown)). El <select> usa un label
   estático porque no soporta :placeholder-shown.
   ======================================== */

.form-field {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.form-label {
  font-family: var(--font-secondary);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--text-faint);
  pointer-events: none;
}

.form-input {
  background: rgba(13, 3, 38, 0.6);
  border: 1px solid rgba(121, 255, 255, 0.25);
  border-radius: var(--r-md);
  padding: 14px 16px;
  color: var(--text-light);
  font-size: var(--fs-base); /* 16px en todos los anchos: evita el zoom de iOS al enfocar */
  font-family: inherit;
  width: 100%;
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}

.form-input:focus-visible {
  border-color: var(--cyan);
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--cyan-10);
}

/* --- Label flotante: text/email/textarea --- */
.form-field:not(.form-field--select) .form-input {
  padding-top: 22px;
  padding-bottom: 8px;
}

.form-field:not(.form-field--select) .form-label {
  position: absolute;
  left: 17px;
  top: 16px;
  font-size: var(--fs-base);
  color: var(--text-faint);
  transform-origin: left top;
  transition: transform var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.form-field:not(.form-field--select) .form-input:focus + .form-label,
.form-field:not(.form-field--select) .form-input:not(:placeholder-shown) + .form-label {
  transform: translateY(-9px) scale(0.8);
  color: var(--cyan);
}

.form-field:not(.form-field--select) .form-input.is-invalid:not(:placeholder-shown) + .form-label {
  color: var(--error);
}

/* --- Label estático: select (no soporta :placeholder-shown) --- */
.form-field--select .form-label {
  order: -1;
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
}

select.form-input {
  cursor: pointer;
  color: var(--text-light);
}

/* El placeholder del select (value="") se distingue de una opción ya elegida */
select.form-input:invalid {
  color: var(--text-faint);
}

select.form-input option {
  background: var(--primary-dark);
  color: var(--text-light);
}

/* --- Estados de validación (aplicados por js/sections/contact.js) --- */
.form-input.is-invalid {
  border-color: var(--error);
}

.form-input.is-invalid:focus-visible {
  border-color: var(--error);
  outline-color: var(--error);
  box-shadow: 0 0 0 4px rgba(255, 138, 138, 0.15);
}

.form-input.is-valid {
  border-color: var(--success);
}

.form-error {
  min-height: 1.3em;
  margin: 0;
  font-family: var(--font-secondary);
  font-size: var(--fs-micro);
  color: var(--error);
}

.form-field-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-2);
}

.form-count {
  flex-shrink: 0;
  margin: 0;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-faint);
}

/* --- Indicador sutil de progreso de completitud --- */
.form-progress {
  height: 3px;
  border-radius: var(--r-pill);
  background: var(--border-hairline);
  overflow: hidden;
}

.form-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-brand);
  transition: width var(--dur-base) var(--ease-out);
}

@media (prefers-reduced-motion: reduce) {
  .form-progress-bar {
    transition: none;
  }
}

/* Honeypot: oculto visualmente y para navegación por teclado, pero
   presente en el DOM para que los bots que rellenan todo lo detecten. */
.form-honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-submit {
  position: relative;
  justify-content: center;
  gap: var(--sp-2);
  width: 100%;
}

.form-submit.is-loading .form-submit-text {
  opacity: 0.6;
}

.form-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--text-light);
  border-radius: 50%;
  animation: spin-form-btn 0.7s linear infinite;
}

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

@media (prefers-reduced-motion: reduce) {
  .form-spinner {
    animation-duration: 1.4s;
  }
}

.form-feedback {
  min-height: 1.4em;
  font-family: var(--font-secondary);
  font-size: var(--fs-sm);
}

.form-feedback[data-state="success"] { color: var(--cyan); }
.form-feedback[data-state="error"] { color: var(--error); }