/* ============================================================
   Forms - accessible field system, validation, stepper, alerts
   ============================================================ */

.form-shell {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.25rem, .6rem + 2.6vw, 2.5rem);
}


/* =============== Fieldsets =============== */
.form-fieldset { border: 0; margin: 0 0 var(--s-8); padding: 0; }
.form-fieldset:last-of-type { margin-bottom: 0; }
.form-legend {
  font-family: var(--font-head); font-size: var(--fs-h3); font-weight: 800;
  color: var(--text-strong); letter-spacing: var(--ls-tight);
  padding: 0; margin: 0 0 var(--s-2);
}
.form-legend + .form-hint-block { margin-bottom: var(--s-6); }
.form-hint-block { font-size: var(--fs-sm); color: var(--text-subtle); margin: 0 0 var(--s-6); }

/* Required-field key */
.required-key {
  font-size: var(--fs-sm); color: var(--text-subtle);
  margin: 0 0 var(--s-6);
}
.req-star { color: var(--c-error); font-weight: 700; }

/* =============== Field grid =============== */
.field-grid { display: grid; gap: var(--s-5); }
@media (min-width: 620px) {
  .field-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .field--full { grid-column: 1 / -1; }
}

/* =============== Single field =============== */
.field { display: flex; flex-direction: column; gap: var(--s-2); }

.field > label,
.field .field__label {
  font-family: var(--font-head); font-size: var(--fs-sm); font-weight: 700;
  color: var(--text-strong); line-height: 1.35;
}
.field__hint { font-size: var(--fs-xs); color: var(--text-subtle); }

.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="date"],
.field input[type="number"],
.field select,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: var(--s-3) var(--s-4);
  font-family: var(--font-body); font-size: 1rem; line-height: 1.5;
  color: var(--text-strong);
  background: var(--c-white);
  border: 1.5px solid var(--c-line-strong);
  border-radius: var(--r-md);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  appearance: none;
}
.field textarea { min-height: 130px; resize: vertical; padding-top: var(--s-3); }

.field select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235C6B7A' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--s-4) center;
  background-size: 18px;
  padding-right: var(--s-10);
}

.field input::placeholder, .field textarea::placeholder { color: #8494A3; }

.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--c-navy-600); }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible {
  border-color: var(--c-navy-800);
  outline: 3px solid var(--focus-ring);
  outline-offset: 1px;
  box-shadow: none;
}

/* ---- Error state: colour is never the only signal ---- */
.field[data-invalid="true"] input,
.field[data-invalid="true"] select,
.field[data-invalid="true"] textarea {
  border-color: var(--c-error);
  border-width: 2px;
  background: var(--c-error-bg);
}
.field__error {
  display: none;
  align-items: flex-start; gap: var(--s-2);
  font-size: var(--fs-sm); font-weight: 600; color: var(--c-error);
}
.field[data-invalid="true"] .field__error { display: flex; }
.field__error svg { width: 17px; height: 17px; flex: none; margin-top: 2px; }

/* =============== Choice controls =============== */
.choice-list { display: grid; gap: var(--s-3); margin: 0; padding: 0; list-style: none; }
.choice {
  display: flex; align-items: flex-start; gap: var(--s-3);
  padding: var(--s-4);
  border: 1.5px solid var(--c-line-strong);
  border-radius: var(--r-md);
  background: var(--c-white);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.choice:hover { border-color: var(--c-navy-600); background: var(--c-navy-50); }
.choice input { width: 22px; height: 22px; margin: 0; flex: none; accent-color: var(--c-navy-800); cursor: pointer; }
.choice input:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; }
.choice__text { font-size: var(--fs-sm); }
.choice__text strong { display: block; font-family: var(--font-head); font-size: var(--fs-body); margin-bottom: 2px; }
.choice__text span { color: var(--text-subtle); }
.choice:has(input:checked) { border-color: var(--c-navy-800); border-width: 2px; background: var(--c-navy-50); }

.field[data-invalid="true"] .choice { border-color: var(--c-error); }

/* Honeypot - hidden from people, reachable by bots */
.hp-field {
  position: absolute !important; left: -9999px !important;
  width: 1px; height: 1px; overflow: hidden;
}

/* =============== Alerts / form status =============== */
.alert {
  display: flex; gap: var(--s-3);
  border-radius: var(--r-md);
  padding: var(--s-4) var(--s-5);
  margin-bottom: var(--s-6);
  font-size: var(--fs-sm);
  border: 1px solid transparent;
}
.alert svg { width: 21px; height: 21px; flex: none; margin-top: 2px; }
.alert p { margin: 0 0 var(--s-2); max-width: none; }
.alert p:last-child, .alert ul:last-child { margin-bottom: 0; }
.alert__title { font-family: var(--font-head); font-weight: 800; font-size: var(--fs-body); margin-bottom: var(--s-1); }
.alert ul { padding-left: var(--s-5); margin: var(--s-2) 0 0; }

.alert--error   { background: var(--c-error-bg);   border-color: #F0B4AF; color: #7C1A14; }
.alert--error   svg, .alert--error a { color: var(--c-error); }
.alert--success { background: var(--c-success-bg); border-color: #A8D8BE; color: #0B4A28; }
.alert--success svg { color: var(--c-success); }
.alert--info    { background: var(--c-navy-50);    border-color: var(--c-navy-200); color: var(--c-navy-950); }
.alert--info    svg { color: var(--c-navy-800); }

.alert[hidden] { display: none; }

/* =============== Submit area =============== */
.form-actions {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  align-items: center;
  margin-top: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--c-line);
}
.form-actions--split { justify-content: space-between; }
.form-actions__note { font-size: var(--fs-xs); color: var(--text-subtle); margin: 0; }

@media (max-width: 520px) {
  .form-actions { flex-direction: column-reverse; align-items: stretch; }
  .form-actions .btn { width: 100%; }
}

/* Busy state */
.btn[data-busy="true"] { pointer-events: none; opacity: .8; }
.spinner {
  width: 16px; height: 16px; flex: none;
  border: 2.5px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =============== Multi-step stepper =============== */
.stepper { margin-bottom: var(--s-8); }
.stepper__meta {
  display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4);
  justify-content: space-between; align-items: baseline;
  margin-bottom: var(--s-3);
}
.stepper__count {
  font-family: var(--font-head); font-size: var(--fs-sm); font-weight: 800;
  color: var(--c-navy-800); text-transform: uppercase; letter-spacing: .06em;
}
.stepper__name { font-family: var(--font-head); font-size: var(--fs-sm); font-weight: 700; color: var(--text-subtle); }

.stepper__track { height: 8px; background: var(--c-navy-100); border-radius: var(--r-pill); overflow: hidden; }
.stepper__fill {
  height: 100%; border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--c-orange-500), var(--c-orange-600));
  transition: width 280ms var(--ease);
}

/* Dot list - desktop */
.stepper__list {
  display: none;
  list-style: none; margin: var(--s-6) 0 0; padding: 0;
  gap: var(--s-2);
}
@media (min-width: 800px) { .stepper__list { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; } }
.stepper__item { margin: 0; text-align: center; }
.stepper__dot {
  display: grid; place-items: center;
  width: 34px; height: 34px; margin: 0 auto var(--s-2);
  border-radius: 50%;
  border: 2px solid var(--c-line-strong);
  background: #fff;
  font-family: var(--font-head); font-size: var(--fs-xs); font-weight: 800;
  color: var(--text-subtle);
}
.stepper__label { font-size: 11px; font-weight: 600; color: var(--text-subtle); line-height: 1.3; display: block; }
.stepper__item[data-state="current"] .stepper__dot { border-color: var(--c-orange-500); background: var(--c-orange-500); color: var(--on-orange); }
.stepper__item[data-state="current"] .stepper__label { color: var(--c-orange-700); font-weight: 800; }
.stepper__item[data-state="done"] .stepper__dot { border-color: var(--c-success); background: var(--c-success); color: #fff; }
.stepper__item[data-state="done"] .stepper__label { color: var(--c-body); }

/* Steps */
.step[hidden] { display: none; }

/* Sensitive-data gate */
.sensitive-gate {
  display: flex; gap: var(--s-3);
  background: var(--c-navy-50);
  border: 1px solid var(--c-navy-200);
  border-left: 4px solid var(--c-navy-800);
  border-radius: var(--r-md);
  padding: var(--s-4);
  margin-bottom: var(--s-6);
  font-size: var(--fs-sm);
  color: var(--c-navy-950);
}
.sensitive-gate svg { width: 20px; height: 20px; flex: none; color: var(--c-navy-800); margin-top: 2px; }
.sensitive-gate p { margin: 0; max-width: none; }

/* =============== Review step =============== */
.review-group { margin-bottom: var(--s-6); }
.review-group__head {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  align-items: baseline; justify-content: space-between;
  border-bottom: 2px solid var(--c-navy-100);
  padding-bottom: var(--s-2); margin-bottom: var(--s-4);
}
.review-group__head h3 { margin: 0; font-size: var(--fs-h4); }
.review-edit {
  background: none; border: 0; padding: var(--s-1) var(--s-2);
  font-family: var(--font-head); font-size: var(--fs-sm); font-weight: 700;
  color: var(--c-navy-800); cursor: pointer; text-decoration: underline;
  border-radius: var(--r-sm);
}
.review-edit:hover { color: var(--c-orange-700); }

.review-list { display: grid; gap: var(--s-3); margin: 0; }
@media (min-width: 620px) { .review-list { grid-template-columns: repeat(2, 1fr); } }
.review-list div { margin: 0; }
.review-list dt {
  font-size: var(--fs-xs); font-weight: 700; color: var(--text-subtle);
  text-transform: uppercase; letter-spacing: .05em; margin-bottom: 2px;
}
.review-list dd { margin: 0; font-size: var(--fs-sm); color: var(--text-strong); font-weight: 500; }
.review-list dd:empty::after,
.review-list dd[data-empty="true"]::after { content: "Not provided"; color: var(--text-subtle); font-style: italic; font-weight: 400; }

/* "(optional)" suffix on non-required labels. */
.field__optional { font-weight: 400; color: var(--text-subtle); font-size: var(--fs-xs); }

/* Fieldsets used purely for grouping inside a field wrapper. */
.field fieldset { border: 0; margin: 0; padding: 0; }
.field fieldset > .field__label { display: block; margin-bottom: var(--s-2); }

/* Steps get focus programmatically; never show a ring for that. */
.step:focus { outline: none; }

/* Aviso de privacidad, antes de pedir información sensible. */
.privacy-note {
  display: flex; gap: var(--s-3);
  background: var(--c-navy-50);
  border: 1px solid var(--c-navy-200);
  border-left: 4px solid var(--c-navy-800);
  border-radius: var(--r-md);
  padding: var(--s-5);
  margin-bottom: var(--s-6);
  font-size: var(--fs-sm);
  color: var(--c-navy-950);
}
.privacy-note svg { width: 20px; height: 20px; flex: none; color: var(--c-navy-800); margin-top: 2px; }
.privacy-note p { margin: 0; max-width: none; }

/* Tarjeta destacada entre las dos rutas de formulario. */
.card--accent { border-color: var(--c-orange-300); background: var(--c-orange-50); }