/* ==========================================================================
   BigTelligent — Sección 9: Preguntas Frecuentes (FAQ)
   Fuente de verdad: .rules/style.md
   ========================================================================== */

.faq {
  position: relative;
  padding-block: var(--section-padding-mobile);
  overflow: hidden;
  background: var(--background);
}

@media (min-width: 900px) {
  .faq {
    padding-block: var(--section-padding);
  }
}

.faq__intro {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  margin-bottom: 56px;
}

.faq__eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: var(--label-caps-size);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.faq__title {
  font-size: var(--display-lg-size);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.faq__title em {
  font-style: normal;
  color: var(--primary);
}

.faq__text {
  font-family: var(--font-body);
  font-size: var(--body-lg-size);
  color: var(--on-surface-variant);
  line-height: 1.6;
}

.faq__list {
  max-width: 820px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  position: relative;
  border-radius: var(--rounded-lg);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-premium), box-shadow 0.3s var(--ease-premium);
}

.faq-item.is-open {
  border-color: var(--primary);
  box-shadow: 0 8px 32px rgba(38, 37, 70, 0.08);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--body-lg-size);
  font-weight: 600;
  color: var(--on-surface);
}

.faq-item__question:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: -3px;
}

.faq-item__icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--rounded-full);
  background: var(--primary-container);
  color: var(--on-primary-container);
  transition: transform 0.35s var(--ease-premium), background 0.3s var(--ease-premium), color 0.3s var(--ease-premium);
}

.faq-item__icon svg {
  width: 20px;
  height: 20px;
  transition: transform 0.35s var(--ease-premium);
}

.faq-item.is-open .faq-item__icon {
  background: var(--primary);
  color: var(--on-primary);
}

.faq-item.is-open .faq-item__icon svg {
  transform: rotate(45deg);
}

.faq-item__answer {
  height: 0;
  overflow: hidden;
  transition: height 0.35s var(--ease-premium);
}

.faq-item__answer-inner {
  padding: 0 24px 24px;
  font-family: var(--font-body);
  font-size: var(--body-md-size);
  color: var(--on-surface-variant);
  line-height: 1.6;
}