/* <x-colorme.faq> (resources/views/components/colorme/faq.blade.php) + public/js/cm-faq.js. Docs: docs/redesign/DESIGN-SYSTEM.md "FAQ".
   Hang phang ngan bang 1 duong ke manh, cau hoi 16px/600, chevron Lucide. Chi dung token -> sang/toi deu dung.
   Font: inherit (trang landing dung font rieng; trang thuong la Be Vietnam Pro qua cm-type). */
.cm-faq { --cm-faq-pad: 20px; max-width: 800px; margin-inline: auto; color: var(--cm-text); font-family: inherit; text-align: left; }
.cm-faq__title { margin: 0 0 24px; font-size: var(--cm-fs-h2); font-weight: var(--cm-fw-heading); line-height: var(--cm-lh-heading); letter-spacing: var(--cm-ls-tight); color: var(--cm-text); }

/* Cong cu: chip chu de + o tim (1 hang, xuong dong tren dien thoai) */
.cm-faq__tools { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-bottom: 16px; }
.cm-faq__chips { display: flex; gap: 8px; flex: 1 1 auto; min-width: 0; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.cm-faq__chips::-webkit-scrollbar { display: none; }
.cm-faq__chip { flex: 0 0 auto; height: 36px; padding: 0 14px; border: 1px solid var(--cm-line); border-radius: var(--cm-radius-pill); background: var(--cm-surface);
    color: var(--cm-text-2); font: inherit; font-size: var(--cm-fs-body-sm); font-weight: var(--cm-fw-medium); line-height: 1; cursor: pointer; white-space: nowrap; }
.cm-faq__chip:hover { border-color: var(--cm-line-2); color: var(--cm-text); }
.cm-faq__chip[aria-pressed="true"] { background: var(--cm-inverse); border-color: var(--cm-inverse); color: var(--cm-on-inverse); }
.cm-faq__search { position: relative; display: block; flex: 0 1 280px; min-width: 200px; margin: 0; }
.cm-faq__search input { width: 100%; height: 40px; padding: 0 14px 0 40px; border: 1px solid var(--cm-line-2); border-radius: var(--cm-radius); background: var(--cm-surface);
    color: var(--cm-text); font: inherit; font-size: var(--cm-fs-body); outline: 0; }
@media (min-width: 768px) { .cm-faq__search input { font-size: var(--cm-fs-body-sm); } }
.cm-faq__search input::placeholder { color: var(--cm-faint); }
.cm-faq__search input:focus { border-color: var(--cm-focus-color); box-shadow: var(--cm-focus); }
.cm-faq__search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--cm-muted); pointer-events: none; }
.cm-faq__sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (max-width: 575.98px) { .cm-faq__search { flex: 1 1 100%; order: -1; } }

/* Danh sach */
.cm-faq__list { border-top: 1px solid var(--cm-line); }
.cm-faq__item { border-bottom: 1px solid var(--cm-line); scroll-margin-top: 96px; }
.cm-faq__item[hidden] { display: none; }
.cm-faq__q { margin: 0; font: inherit; }
.cm-faq__q > button { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; min-height: 64px; padding: var(--cm-faq-pad) 0;
    border: 0; background: none; color: var(--cm-text); font: inherit; font-size: var(--cm-fs-body); font-weight: var(--cm-fw-semibold); line-height: 1.45; text-align: left; cursor: pointer;
    -webkit-tap-highlight-color: transparent; }
@media (hover: hover) { .cm-faq__q > button:hover > span { color: var(--cm-text); text-decoration: underline; text-decoration-color: var(--cm-line-2); text-underline-offset: 4px; } }
.cm-faq__q > button:focus-visible { outline: 2px solid var(--cm-focus-color); outline-offset: 2px; border-radius: 4px; }
.cm-faq__chev { flex: 0 0 auto; width: 20px; height: 20px; color: var(--cm-muted); transition: transform .25s ease; }
.cm-faq__item.is-open .cm-faq__chev { transform: rotate(180deg); color: var(--cm-text); }

.cm-faq__a { overflow: hidden; }
.cm-faq__a.is-animating { transition: height .26s cubic-bezier(.2, 0, 0, 1); }
.cm-faq__a-inner { padding: 0 40px var(--cm-faq-pad) 0; color: var(--cm-text-2); font-size: var(--cm-fs-body); line-height: var(--cm-lh-body); max-width: 68ch; }
.cm-faq__a-inner > :first-child { margin-top: 0; }
.cm-faq__a-inner > :last-child { margin-bottom: 0; }
.cm-faq__a-inner p { margin: 0 0 12px; }
.cm-faq__a-inner a { color: var(--cm-link); text-decoration: underline; text-underline-offset: 3px; }
.cm-faq__item.is-target .cm-faq__q > button > span { color: var(--cm-text); }
.cm-faq mark { padding: 0 1px; border-radius: 3px; background: var(--cm-warning-bg); color: inherit; }

.cm-faq__empty { margin: 0; padding: 24px 0; color: var(--cm-muted); border-bottom: 1px solid var(--cm-line); }

/* Hang cuoi: "Còn câu hỏi? Nhắn tư vấn" */
.cm-faq__contact { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; margin: 0; padding: 20px 0 0; color: var(--cm-muted); font-size: var(--cm-fs-body); }
.cm-faq__contact a { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; color: var(--cm-text); font-weight: var(--cm-fw-semibold); text-decoration: none; }
.cm-faq__contact a:hover { text-decoration: underline; text-underline-offset: 4px; }
.cm-faq__arrow { width: 16px; height: 16px; transition: transform .2s ease; }
.cm-faq__contact a:hover .cm-faq__arrow { transform: translateX(2px); }

@media (max-width: 575.98px) {
    .cm-faq { --cm-faq-pad: 16px; }
    .cm-faq__q > button { min-height: 56px; }
    .cm-faq__a-inner { padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .cm-faq__a.is-animating, .cm-faq__chev, .cm-faq__arrow { transition: none; }
}

/* Accordion cu nam trong HTML khoa hoc luu DB (Bootstrap 3 .panel-group / .accordion-toggle): cm-faq.js them .cm-faq-legacy
   roi CSS nay chi ap vao khoi do (trang /course/*), phan con lai cua landing giu nguyen. */
.cm-faq-legacy { max-width: 800px; margin-inline: auto; border-top: 1px solid var(--cm-line); text-align: left; }
.cm-faq-legacy .panel { margin: 0 !important; border: 0 !important; border-bottom: 1px solid var(--cm-line) !important; border-radius: 0 !important; background: none !important; box-shadow: none !important; }
.cm-faq-legacy .panel-heading { padding: 0 !important; border: 0 !important; background: none !important; }
.cm-faq-legacy .panel-title { margin: 0 !important; font: inherit !important; }
.cm-faq-legacy .cm-faq-legacy__btn { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; min-height: 64px; padding: 20px 0;
    border: 0; background: none; color: var(--cm-text) !important; font: inherit; font-size: var(--cm-fs-body); font-weight: var(--cm-fw-semibold); line-height: 1.45; text-align: left; text-decoration: none !important; cursor: pointer; }
.cm-faq-legacy .cm-faq-legacy__btn:hover > span { text-decoration: underline; text-decoration-color: var(--cm-line-2); text-underline-offset: 4px; }
.cm-faq-legacy .cm-faq-legacy__btn:focus-visible { outline: 2px solid var(--cm-focus-color); outline-offset: 2px; border-radius: 4px; }
.cm-faq-legacy .cm-faq-legacy__btn[aria-expanded="true"] .cm-faq__chev { transform: rotate(180deg); color: var(--cm-text); }
.cm-faq-legacy .panel-collapse { display: block !important; height: auto; overflow: hidden; }
.cm-faq-legacy .panel-collapse[hidden] { display: none !important; }
.cm-faq-legacy .panel-body { padding: 0 40px 20px 0 !important; border: 0 !important; color: var(--cm-text-2); font-size: var(--cm-fs-body); line-height: var(--cm-lh-body); }
.cm-faq-legacy .panel-body a { color: var(--cm-link); }
.cm-faq-legacy + .cm-faq__contact { max-width: 800px; margin-inline: auto; }
@media (max-width: 575.98px) { .cm-faq-legacy .panel-body { padding-right: 0 !important; } }

/* layout="split": tu 992px tieu de + o tim + lien he o cot trai (dinh khi cuon), danh sach ben phai; duoi 992 xep chong */
.cm-faq .cm-faq__title:has(+ .cm-faq__intro) { margin-bottom: 8px; }
.cm-faq__intro { margin: 0 0 24px; color: var(--cm-muted); font-size: var(--cm-fs-body); line-height: var(--cm-lh-body); }
.cm-faq--split { max-width: none; }
.cm-faq--split .cm-faq__aside-contact { display: none; }
@media (min-width: 992px) {
    .cm-faq--split { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 64px; align-items: start; }
    .cm-faq--split .cm-faq__aside { position: sticky; top: 96px; }
    .cm-faq--split .cm-faq__tools { flex-direction: column; align-items: stretch; }
    .cm-faq--split .cm-faq__search { flex: 0 0 auto; min-width: 0; }
    .cm-faq--split .cm-faq__chips { flex-wrap: wrap; overflow: visible; }
    .cm-faq--split .cm-faq__aside-contact { display: block; }
    .cm-faq--split .cm-faq__main-contact { display: none; }
    .cm-faq--split .cm-faq__aside-contact .cm-faq__contact { padding-top: 8px; }
}