/* ──────────────────────────────────────────────────────────────────────────────
   DΛREΛKT_ UI -- MODULE: ui.faq
   Classification : UI Atom | FAQ Accordion | Accessible
   Version        : 1.0.0 | Genesis-Final . Layered . Token-Scoped
   File           : /tools/modules/ui.faq/ui.faq.css
   Maintainer     : DΛREΛKT_ UI TEAM
   ────────────────────────────────────────────────────────────────────────────── */

@layer atoms {

  /* --- Wrapper ─────────────────────────────────────────────────────────────── */
  .ui-faq__wrap {
    width: 100%;
    display: block;
    box-sizing: border-box;
  }

  /* --- Title ───────────────────────────────────────────────────────────────── */
  .ui-faq__title {
    margin: 0 0 1.5rem 0;
    font-size: var(--ui-faq-title-fs, 1.5rem);
    font-weight: var(--ui-faq-title-fw, 700);
    color: var(--ui-faq-question-fg, currentColor);
    line-height: 1.3;
  }

  /* --- List Container ──────────────────────────────────────────────────────── */
  .ui-faq__list {
    display: flex;
    flex-direction: column;
    gap: var(--ui-faq-gap, 0px);
  }

  /* --- Item (<details>) ────────────────────────────────────────────────────── */
  .ui-faq__item {
    border-bottom: var(--ui-faq-border, 1px solid rgba(0, 0, 0, 0.1));
    overflow: hidden;
  }

  .ui-faq__item:first-child {
    border-top: var(--ui-faq-border, 1px solid rgba(0, 0, 0, 0.1));
  }

  /* --- Question (<summary>) ────────────────────────────────────────────────── */
  .ui-faq__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    font-size: var(--ui-faq-question-fs, 1.0625rem);
    font-weight: var(--ui-faq-question-fw, 600);
    color: var(--ui-faq-question-fg, currentColor);
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: color 0.2s ease;
    line-height: 1.4;
  }

  /* Remove default marker across browsers */
  .ui-faq__question::-webkit-details-marker {
    display: none;
  }
  .ui-faq__question::marker {
    content: "";
  }

  /* Chevron indicator (CSS-only) */
  .ui-faq__question::after {
    content: "";
    flex-shrink: 0;
    width: 0.625rem;
    height: 0.625rem;
    margin-left: 1rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.25s ease;
    opacity: 0.6;
  }

  /* Rotate chevron when open */
  .ui-faq__item[open] > .ui-faq__question::after {
    transform: rotate(-135deg);
  }

  /* Hover state */
  .ui-faq__question:hover {
    color: var(--ui-faq-question-hover-fg, currentColor);
    opacity: 0.8;
  }

  /* Focus visible for keyboard accessibility */
  .ui-faq__question:focus-visible {
    outline: 2px solid var(--ui-faq-focus-ring, currentColor);
    outline-offset: 2px;
    border-radius: 2px;
  }

  /* --- Answer ──────────────────────────────────────────────────────────────── */
  .ui-faq__answer {
    padding: 0 0 1.25rem 0;
    color: var(--ui-faq-answer-fg, rgba(0, 0, 0, 0.7));
    font-size: var(--ui-faq-answer-fs, 1rem);
    line-height: 1.65;
  }

  .ui-faq__answer p {
    margin: 0;
  }

  .ui-faq__answer p + p {
    margin-top: 0.75rem;
  }

  /* --- Smooth open/close animation ─────────────────────────────────────────── */
  .ui-faq__item .ui-faq__answer {
    animation: uiFaqFadeIn 0.25s ease forwards;
  }

  @keyframes uiFaqFadeIn {
    from {
      opacity: 0;
      transform: translateY(-4px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* --- Responsive ──────────────────────────────────────────────────────────── */
  @media (max-width: 640px) {
    .ui-faq__title {
      font-size: var(--ui-faq-title-fs-sm, 1.25rem);
    }
    .ui-faq__question {
      font-size: var(--ui-faq-question-fs-sm, 1rem);
      padding: 0.875rem 0;
    }
    .ui-faq__answer {
      font-size: var(--ui-faq-answer-fs-sm, 0.9375rem);
    }
  }
}

/* --- Design Tokens (overridable via theme or site tokens) ──────────────────
   These ensure the FAQ renders cleanly out of the box. Override as needed.
   -------------------------------------------------------------------------- */
:root {
  --ui-faq-border: 1px solid rgba(0, 0, 0, 0.1);
  --ui-faq-question-fg: currentColor;
  --ui-faq-answer-fg: rgba(0, 0, 0, 0.7);
  --ui-faq-gap: 0px;
}