/* ============================================================
   11-faq.css — FAQ corporativo
   ============================================================ */

.faq {
  background: var(--bg-soft);
  padding-block: clamp(64px, 9vw, 128px);
}

.faq__layout {
  display: grid;
  grid-template-columns: 1fr 1.7fr;
  gap: var(--space-8);
  align-items: start;
}
@media (max-width: 900px) {
  .faq__layout { grid-template-columns: 1fr; }
}

.faq__title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: 0.98;
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--navy-900);
}
.faq__sub {
  margin-top: var(--space-4);
  font-size: var(--fs-md);
  color: var(--ink-soft);
  max-width: 36ch;
  line-height: 1.55;
}

.faq__cta { margin-top: var(--space-5); }

.faq__list {
  border-top: 1px solid var(--line);
}

.faq__item {
  border-bottom: 1px solid var(--line);
  padding-block: var(--space-5);
  cursor: pointer;
}

.faq__item-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  align-items: center;
}

.faq__q {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.4vw, 22px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 600;
  color: var(--navy-900);
  transition: color var(--dur-fast);
}

.faq__item:hover .faq__q { color: var(--orange-500); }

.faq__toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  transition: all var(--dur-base);
}
.faq__toggle::before,
.faq__toggle::after {
  content: "";
  position: absolute;
  inset: 50% 28% auto 28%;
  height: 2px;
  background: var(--navy-700);
  transform: translateY(-50%);
  transition: transform var(--dur-base) var(--ease-out);
  border-radius: 2px;
}
.faq__toggle::after { transform: translateY(-50%) rotate(90deg); }

.faq__item.is-open .faq__toggle {
  background: var(--orange-500);
  border-color: var(--orange-500);
}
.faq__item.is-open .faq__toggle::before,
.faq__item.is-open .faq__toggle::after {
  background: #FFFFFF;
}
.faq__item.is-open .faq__toggle::after { transform: translateY(-50%) rotate(0); }

.faq__a {
  display: grid;
  grid-template-rows: 0fr; /* UIUX-009: técnica grid para animación sin max-height fijo */
  overflow: hidden;
  transition: grid-template-rows 480ms var(--ease-out), margin var(--dur-base);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 70ch;
}
.faq__a > * { min-height: 0; overflow: hidden; }
.faq__item.is-open .faq__a {
  grid-template-rows: 1fr;
  margin-top: var(--space-3);
}

/* QA-010: reset para button.faq__item-head (ARIA accordion) */
button.faq__item-head {
  appearance: none;
  border: none;
  background: none;
  padding: 0;
  margin: 0;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  align-items: center;
}
button.faq__item-head:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}