/* ==========================================================================
   Nhóm trang Giới thiệu: gioi-thieu, lich-su, tam-nhin, chung-chi
   (page-templates/gioi-thieu.php, lich-su.php, tam-nhin.php, chung-chi.php)
   ========================================================================== */

/* ---------- Dùng chung ---------- */
.hc-about-narrow { max-width: 960px; margin: 0 auto; padding: 0 var(--gutter); display: flex; flex-direction: column; gap: var(--space-5); }
.hc-about-h2 { margin: 0; font-family: var(--font-display); font-size: var(--size-h1); font-weight: var(--weight-bold); line-height: var(--leading-tight); text-transform: uppercase; text-wrap: balance; color: inherit; }
.hc-about-p { margin: 0; font-size: var(--size-ui); line-height: 1.65; color: var(--text-muted); text-wrap: pretty; }
.hc-about-p--on { line-height: 1.6; color: inherit; }
.hc-about-split { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: var(--space-12); align-items: center; }
.hc-about-col { display: flex; flex-direction: column; gap: var(--space-5); }
.hc-about-col--narrow { max-width: 480px; }
.hc-about-col--wide { max-width: 960px; }
.hc-about-figure { border-radius: var(--radius-md); overflow: hidden; background: var(--surface-subtle); min-width: 0; }
.hc-about-figure img { width: 100%; height: auto; display: block; }

/* ---------- Giới thiệu: 02 Tập đoàn ---------- */
.hc-container.hc-about-strip { margin-top: var(--space-12); display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); gap: var(--space-5); }

/* ---------- Giới thiệu: 03 Chỉ số và video ---------- */
.hc-about-brand { background: var(--primary); color: var(--white); }
.hc-about-brand__in { display: flex; flex-direction: column; gap: var(--space-12); }
.hc-about-video { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius-md); overflow: hidden; background: var(--black); }
.hc-about-video img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hc-about-video__overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; pointer-events: none; background: rgba(0,0,0,.25); }
.hc-about-video__play { pointer-events: auto; width: 80px; height: 80px; border-radius: var(--radius-pill); border: 0; background: var(--white); color: var(--primary); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: transform var(--dur-fast) var(--ease-standard); }
.hc-about-video__play:hover { transform: scale(1.06); }
.hc-about-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: var(--space-8); border-top: 1px solid rgba(255,255,255,.3); }
.hc-about-stat { display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-6) 0; border-bottom: 1px solid rgba(255,255,255,.3); min-width: 0; }
.hc-about-stat__n { font-family: var(--font-display); font-size: clamp(32px, 3.2vw, 44px); font-weight: var(--weight-bold); line-height: 1.1; white-space: nowrap; }
.hc-about-stat__l { font-size: 14px; line-height: 1.45; }
@media (max-width: 639px) { .hc-about-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- Giới thiệu: 04 Hangcha Việt Nam ---------- */
.hc-about-vn { display: flex; flex-direction: column; gap: var(--space-12); }
.hc-about-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(2, 240px); gap: var(--space-5); }
.hc-about-gallery__cell { border-radius: var(--radius-md); overflow: hidden; background: var(--surface-subtle); }
.hc-about-gallery__cell--tall { grid-row: span 2; }
.hc-about-gallery__cell img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---------- Lịch sử hình thành: giai đoạn + carousel mốc ---------- */
.hc-hist { position: relative; display: flex; flex-direction: column; gap: var(--space-9); }
.hc-hist__radio { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; margin: 0; }
.hc-hist__eras { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: var(--space-5); }
.hc-hist__era { box-sizing: border-box; cursor: pointer; display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-6); border-radius: var(--radius-md); background: var(--white); color: var(--text-primary); border: 1px solid var(--border-subtle); transition: all var(--dur-fast) var(--ease-standard); user-select: none; }
.hc-hist__era:hover { border-color: var(--primary); }
.hc-hist__range { font-family: var(--font-ui); font-size: var(--size-caption); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-caps); text-transform: uppercase; }
.hc-hist__name { font-family: var(--font-display); font-size: var(--size-h3); font-weight: var(--weight-bold); line-height: var(--leading-tight); }
#hc-era-0:checked ~ .hc-hist__eras [for="hc-era-0"],
#hc-era-1:checked ~ .hc-hist__eras [for="hc-era-1"],
#hc-era-2:checked ~ .hc-hist__eras [for="hc-era-2"] { background: var(--primary); color: var(--white); border-color: var(--primary); }
#hc-era-0:focus-visible ~ .hc-hist__eras [for="hc-era-0"],
#hc-era-1:focus-visible ~ .hc-hist__eras [for="hc-era-1"],
#hc-era-2:focus-visible ~ .hc-hist__eras [for="hc-era-2"] { box-shadow: var(--focus-ring); }
.hc-hist__panel { display: none; flex-direction: column; gap: var(--space-9); }
#hc-era-0:checked ~ .hc-hist__panels .hc-hist__panel--0,
#hc-era-1:checked ~ .hc-hist__panels .hc-hist__panel--1,
#hc-era-2:checked ~ .hc-hist__panels .hc-hist__panel--2 { display: flex; }
.hc-hist__bar { display: flex; justify-content: space-between; align-items: center; gap: var(--space-5); flex-wrap: wrap; }
.hc-hist__title { font-family: var(--font-display); font-size: var(--size-h2); font-weight: var(--weight-bold); }
.hc-hist__ctrl { display: flex; align-items: center; gap: var(--space-4); }
.hc-hist__count { font-family: var(--font-ui); font-size: 14px; font-weight: var(--weight-semibold); color: var(--text-muted); }
.hc-hist__view { overflow: hidden; }
.hc-hist__item { flex: 0 0 25%; box-sizing: border-box; display: flex; flex-direction: column; gap: var(--space-5); padding-right: var(--space-5); }
@media (max-width: 1099px) { .hc-hist__item { flex-basis: 50%; } }
@media (max-width: 639px) { .hc-hist__item { flex-basis: 100%; } }
.hc-hist__year { font-family: var(--font-display); font-size: var(--size-display); font-weight: var(--weight-bold); line-height: 1; letter-spacing: var(--tracking-display); color: var(--primary); }
.hc-hist__line { position: relative; height: 16px; display: flex; align-items: center; }
.hc-hist__rule { position: absolute; left: 0; right: calc(var(--space-5) * -1); top: 7px; height: 2px; background: var(--border-subtle); }
.hc-hist__dot { position: relative; width: 16px; height: 16px; border-radius: var(--radius-pill); border: 2px solid var(--primary); background: var(--white); box-sizing: border-box; }
.hc-hist__card { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); overflow: hidden; flex: 1; }
.hc-hist__media { aspect-ratio: 4 / 3; background: var(--surface-subtle); position: relative; overflow: hidden; }
.hc-hist__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.hc-hist__body { padding: var(--space-5) var(--space-6) var(--space-6); }
.hc-hist__mtitle { font-family: var(--font-display); font-size: var(--size-title); font-weight: var(--weight-bold); line-height: var(--leading-snug); text-wrap: pretty; }

/* ---------- Tầm nhìn và Sứ mệnh ---------- */
.hc-vision-culture { padding: 0 0 var(--space-20); }
.hc-vision-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 520px), 1fr)); gap: var(--space-5); }
.hc-vision-card { position: relative; min-height: 360px; border-radius: var(--radius-md); overflow: hidden; background: var(--indigo-600); color: var(--white); }
.hc-vision-card__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.hc-vision-card__scrim { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(27,27,138,.92) 0%, rgba(27,27,138,.75) 45%, rgba(27,27,138,0) 85%); }
.hc-vision-card__in { position: absolute; inset: 0; pointer-events: none; display: flex; flex-direction: column; justify-content: flex-end; gap: var(--space-3); padding: var(--space-9); max-width: 440px; }
.hc-vision-card__icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: var(--radius-pill); border: 1px solid var(--white); }
.hc-vision-card__name { font-family: var(--font-display); font-size: var(--size-h2); font-weight: var(--weight-bold); line-height: var(--leading-tight); text-transform: uppercase; }
.hc-vision-card__text { font-size: var(--size-lead); line-height: var(--leading-snug); text-wrap: pretty; }
.hc-vision-strengths { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr)); gap: var(--space-5); }
.hc-vision-str { display: flex; flex-direction: column; gap: var(--space-5); padding: var(--space-8) var(--space-6); border-radius: var(--radius-md); background: var(--white); border: 1px solid var(--border-subtle); min-height: 260px; }
.hc-vision-str__img { width: 56px; height: 56px; object-fit: contain; display: block; }
.hc-vision-str__name { font-family: var(--font-display); font-size: var(--size-h3); font-weight: var(--weight-bold); line-height: var(--leading-tight); }
.hc-vision-str__text { font-size: 14px; line-height: 1.55; color: var(--text-muted); }

/* ---------- Chứng chỉ ---------- */
.hc-cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr)); gap: var(--space-5); }
.hc-cert { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); overflow: hidden; transition: border-color var(--dur-fast) var(--ease-standard); }
.hc-cert:hover { border-color: var(--primary); }
.hc-cert__media { position: relative; display: block; aspect-ratio: 3 / 4; background: var(--white); padding: var(--space-5); }
a.hc-cert__media { cursor: zoom-in; }
.hc-cert__media img { width: 100%; height: 100%; object-fit: contain; display: block; }
.hc-cert__zoom { position: absolute; top: 12px; right: 12px; width: 36px; height: 36px; border-radius: var(--radius-pill); background: var(--primary); color: var(--white); display: flex; align-items: center; justify-content: center; transition: background var(--dur-fast) var(--ease-standard); }
.hc-cert__media:hover .hc-cert__zoom { background: var(--primary-hover, #1B1B8A); }
.hc-cert__body { display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-5) var(--space-6) var(--space-6); border-top: 1px solid var(--border-subtle); flex: 1; }
.hc-cert__name { font-family: var(--font-display); font-size: var(--size-h3); font-weight: var(--weight-bold); line-height: var(--leading-tight); color: var(--text-primary); }

/* Mobile: thư viện ảnh Hangcha Việt Nam 1 cột, mỗi ảnh tỉ lệ 4:3 */
@media (max-width: 768px) {
	.hc-about-gallery { grid-template-columns: minmax(0, 1fr); grid-template-rows: none; }
	.hc-about-gallery__cell, .hc-about-gallery__cell--tall { grid-row: auto; aspect-ratio: 4 / 3; }
}
.hc-cert__desc { font-size: 14px; line-height: 1.55; color: var(--text-muted); }

/* Builder: Timeline — tối đa 6 giai đoạn (class theo số thứ tự, không phụ thuộc id) */
.hc-hist__radio--0:checked ~ .hc-hist__eras .hc-hist__era--0,
.hc-hist__radio--1:checked ~ .hc-hist__eras .hc-hist__era--1,
.hc-hist__radio--2:checked ~ .hc-hist__eras .hc-hist__era--2,
.hc-hist__radio--3:checked ~ .hc-hist__eras .hc-hist__era--3,
.hc-hist__radio--4:checked ~ .hc-hist__eras .hc-hist__era--4,
.hc-hist__radio--5:checked ~ .hc-hist__eras .hc-hist__era--5 { background: var(--primary); color: var(--white); border-color: var(--primary); }
.hc-hist__radio--0:focus-visible ~ .hc-hist__eras .hc-hist__era--0,
.hc-hist__radio--1:focus-visible ~ .hc-hist__eras .hc-hist__era--1,
.hc-hist__radio--2:focus-visible ~ .hc-hist__eras .hc-hist__era--2,
.hc-hist__radio--3:focus-visible ~ .hc-hist__eras .hc-hist__era--3,
.hc-hist__radio--4:focus-visible ~ .hc-hist__eras .hc-hist__era--4,
.hc-hist__radio--5:focus-visible ~ .hc-hist__eras .hc-hist__era--5 { box-shadow: var(--focus-ring); }
.hc-hist__radio--0:checked ~ .hc-hist__panels .hc-hist__panel--0,
.hc-hist__radio--1:checked ~ .hc-hist__panels .hc-hist__panel--1,
.hc-hist__radio--2:checked ~ .hc-hist__panels .hc-hist__panel--2,
.hc-hist__radio--3:checked ~ .hc-hist__panels .hc-hist__panel--3,
.hc-hist__radio--4:checked ~ .hc-hist__panels .hc-hist__panel--4,
.hc-hist__radio--5:checked ~ .hc-hist__panels .hc-hist__panel--5 { display: flex; }