#duvidas {
  background: var(--gray);
  padding-block: 6rem;
}

.duvidas-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 5rem;
  align-items: start;
}

.duvidas-header {
  position: sticky;
  top: calc(var(--header-h) + 2rem);

  & .section-title,
  & .section-sub {
    margin-inline: 0;
  }

  & .section-sub a {
    color: var(--orange-txt);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
  }
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  transition: border-color .3s ease, box-shadow .3s ease;

  &[open] {
    border-color: rgba(240,120,32,.3);
    box-shadow: var(--shadow);
  }

  & summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.4rem 1.5rem;
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);

    &::-webkit-details-marker { display: none; }

    /* ícone + que vira × quando aberto */
    &::after {
      content: "+";
      flex-shrink: 0;
      display: grid;
      place-items: center;
      width: 2rem;
      height: 2rem;
      border-radius: 50%;
      background: rgba(240,120,32,.12);
      color: var(--orange);
      font-size: 1.4rem;
      font-weight: 600;
      line-height: 1;
      transition: transform .3s ease, background .3s ease, color .3s ease;
    }
  }

  &[open] summary::after {
    transform: rotate(45deg);
    background: var(--orange);
    color: var(--white);
  }
}

.faq-a {
  padding: 0 1.5rem 1.5rem;

  & p {
    color: var(--muted);
    line-height: 1.7;
  }
}

/* abertura animada nos navegadores que suportam */
@supports (interpolate-size: allow-keywords) {
  .faq-list {
    interpolate-size: allow-keywords;
  }

  .faq-item::details-content {
    height: 0;
    overflow: hidden;
    transition: height .35s ease, content-visibility .35s allow-discrete;
  }

  .faq-item[open]::details-content {
    height: auto;
  }
}

@media (width < 62.5rem) {
  .duvidas-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .duvidas-header {
    position: static;
  }
}

@media (width <= 40rem) {
  #duvidas {
    padding-block: 4rem;
  }

  .faq-item summary {
    font-size: 1.05rem;
    padding: 1.2rem 1.25rem;
  }

  .faq-a {
    padding: 0 1.25rem 1.25rem;
  }
}