/* Thư viện video: trình phát tải chậm, lưới video, trang một video. Màu lấy từ biến --tgt-* (đổi theo giao diện tối). */

.tgt-vd-wrap { width: 100%; max-width: var(--wrap, 1200px); margin: 0 auto; padding: 0 20px; box-sizing: border-box; }
.tgt-vd-page { --cd: #ef4444; padding-bottom: 40px; background: transparent; }
.tgt-vd-page .tgtt-crumbs { padding-top: 18px; }

/* Trình phát */
.tgt-vd-player { position: relative; aspect-ratio: 16 / 9; width: 100%; background: #000; border-radius: var(--tgt-radius, 18px); overflow: hidden; box-shadow: var(--tgt-shadow); }
@supports not (aspect-ratio: 16 / 9) { .tgt-vd-player { height: 0; padding-top: 56.25%; } }
.tgt-vd-player__poster, .tgt-vd-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.tgt-vd-player__poster { cursor: pointer; color: #fff; text-decoration: none; }
.tgt-vd-player__poster img { width: 100%; height: 100%; object-fit: cover; display: block; margin: 0; border-radius: 0; transition: transform .3s, filter .3s; }
.tgt-vd-player__poster::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, .45)); pointer-events: none; }
.tgt-vd-player__btn { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 1; filter: drop-shadow(0 4px 14px rgba(0, 0, 0, .35)); transition: transform .15s; }
.tgt-vd-player__btn svg { display: block; width: 74px; height: auto; }
.tgt-vd-player__btn-bg { fill: #212121; fill-opacity: .82; transition: fill .15s, fill-opacity .15s; }
.tgt-vd-player__hint { position: absolute; left: 16px; bottom: 12px; z-index: 1; font-weight: 800; font-size: .9rem; text-shadow: 0 1px 3px rgba(0, 0, 0, .6); }
.tgt-vd-player__poster:hover img, .tgt-vd-player__poster:focus-visible img { transform: scale(1.02); filter: brightness(1.05); }
.tgt-vd-player__poster:hover .tgt-vd-player__btn-bg, .tgt-vd-player__poster:focus-visible .tgt-vd-player__btn-bg { fill: #f00; fill-opacity: 1; }
.tgt-vd-player__poster:hover .tgt-vd-player__btn { transform: translate(-50%, -50%) scale(1.06); }
.tgt-vd-player__poster:focus-visible { outline: 4px solid var(--tgt-primary, #ff7a45); outline-offset: -4px; }
.tgt-vd-player.is-playing { background: #000; }

.tgt-vd-embed { margin: 1.4em 0; }
.tgt-vd-embed figcaption { margin-top: 8px; font-size: .92rem; font-weight: 700; color: var(--tgt-muted); text-align: center; }
.tgt-vd-embed figcaption a { color: inherit; }

/* Thẻ video */
.tgt-vd-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.tgt-vd-card { display: flex; flex-direction: column; background: var(--tgt-card); border: 1px solid var(--tgt-line); border-radius: var(--tgt-radius, 18px); overflow: hidden; box-shadow: var(--tgt-shadow); transition: transform .15s, box-shadow .15s; }
.tgt-vd-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(35, 49, 77, .14); }
.tgt-vd-card__thumb { position: relative; display: block; aspect-ratio: 16 / 9; background: #111; overflow: hidden; }
.tgt-vd-card__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; margin: 0; border-radius: 0; transition: transform .3s; }
.tgt-vd-card:hover .tgt-vd-card__thumb img { transform: scale(1.04); }
.tgt-vd-card__play { position: absolute; left: 50%; top: 50%; width: 48px; height: 48px; margin: -24px 0 0 -24px; border-radius: 50%; display: grid; place-items: center; padding-left: 3px; box-sizing: border-box; background: rgba(0, 0, 0, .6); color: #fff; font-size: 18px; opacity: .9; transition: background .15s, transform .15s; }
.tgt-vd-card:hover .tgt-vd-card__play { background: #f00; transform: scale(1.08); }
.tgt-vd-card__dur { position: absolute; right: 8px; bottom: 8px; padding: 2px 7px; border-radius: 6px; background: rgba(0, 0, 0, .78); color: #fff; font-size: .78rem; font-weight: 800; letter-spacing: .02em; }
.tgt-vd-card__body { display: flex; flex-direction: column; gap: 6px; padding: 12px 14px 14px; flex: 1; }
.tgt-vd-card__kicker { margin: 0; font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; color: var(--cd, #ef4444); }
.tgt-vd-card__title { margin: 0; font-size: 1.02rem; font-weight: 900; line-height: 1.35; }
.tgt-vd-card__title a { color: var(--tgt-ink); text-decoration: none; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tgt-vd-card__title a:hover { color: var(--cd, #ef4444); }
.tgt-vd-card__title a::after { content: ""; position: absolute; inset: 0; }
.tgt-vd-card { position: relative; }
.tgt-vd-card__tags { margin: auto 0 0; display: flex; flex-wrap: wrap; gap: 4px; }

/* Thư viện */
.tgt-vd-hero { padding: 0 0 22px; margin-bottom: 26px; background: linear-gradient(135deg, color-mix(in srgb, #ef4444 12%, var(--tgt-card)) 0%, color-mix(in srgb, #8b5cf6 10%, var(--tgt-card)) 100%); border-bottom: 1px solid var(--tgt-line); }
.tgt-vd-hero__title { margin: 4px 0 6px; font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 900; color: var(--tgt-ink); line-height: 1.2; }
.tgt-vd-hero__desc { margin: 0 0 18px; max-width: 760px; color: var(--tgt-muted); font-size: 1.05rem; }

.tgt-vd-filter__row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.tgt-vd-filter__search { flex: 1 1 260px; }
.tgt-vd-filter input[type="search"], .tgt-vd-filter select {
	width: 100%; box-sizing: border-box; min-height: 44px; padding: 8px 14px; font: inherit; font-weight: 700; color: var(--tgt-ink);
	background: var(--tgt-card); border: 2px solid var(--tgt-line); border-radius: 12px;
}
.tgt-vd-filter input[type="search"]:focus, .tgt-vd-filter select:focus { outline: none; border-color: var(--tgt-primary, #ff7a45); }
.tgt-vd-filter__select { display: flex; flex-direction: column; gap: 3px; flex: 0 1 220px; font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; color: var(--tgt-muted); }
.tgt-vd-filter__go { min-height: 44px; padding: 0 20px; border: 0; border-radius: 12px; background: var(--tgt-primary, #ff7a45); color: #fff; font: inherit; font-weight: 900; cursor: pointer; }
.tgt-vd-filter__go:hover { background: var(--tgt-primary-dark, #e85d27); }
.tgt-vd-filter.is-js .tgt-vd-filter__go { padding: 0 16px; }

.tgt-vd-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 14px; }
.tgt-vd-chips__sep { width: 1px; height: 22px; background: var(--tgt-line); margin: 0 4px; }
.tgt-vd-chip { display: inline-flex; align-items: center; gap: 4px; padding: 6px 13px; border-radius: 999px; font-size: .9rem; font-weight: 800; text-decoration: none; color: var(--tgt-ink); background: var(--tgt-card); border: 2px solid var(--tgt-line); }
.tgt-vd-chip:hover { border-color: var(--tgt-primary, #ff7a45); color: var(--tgt-ink); }
.tgt-vd-chip.is-active { background: var(--tgt-ink); border-color: var(--tgt-ink); color: var(--tgt-card); }

.tgt-vd-count { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 0 0 14px; font-weight: 800; color: var(--tgt-muted); }
.tgt-vd-count a { color: var(--tgt-bad, #dc2626); text-decoration: none; font-size: .9rem; }
.tgt-vd-pages { margin-top: 26px; }
.tgt-vd-pages ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin: 0; padding: 0; }
.tgt-vd-pages a, .tgt-vd-pages span { display: inline-flex; min-width: 40px; min-height: 40px; align-items: center; justify-content: center; padding: 0 12px; box-sizing: border-box; border-radius: 12px; font-weight: 800; text-decoration: none; color: var(--tgt-ink); background: var(--tgt-card); border: 1px solid var(--tgt-line); }
.tgt-vd-pages .current { background: var(--tgt-primary, #ff7a45); border-color: transparent; color: #fff; }
.tgt-vd-empty { text-align: center; padding: 40px 20px; background: var(--tgt-card); border: 2px dashed var(--tgt-line); border-radius: var(--tgt-radius, 18px); color: var(--tgt-muted); font-weight: 700; }
.tgt-vd-empty__icon { font-size: 46px; margin: 0; }
.tgt-vd-more { margin: 14px 0 0; font-weight: 900; }
.tgt-vd-more a, a.tgt-vd-more { color: var(--cd, #ef4444); text-decoration: none; }

/* Trang một video */
.tgt-vd-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; align-items: start; }
.tgt-vd-layout:has(.tgt-vd-side) { grid-template-columns: minmax(0, 1fr) 320px; }
.tgt-vd-head { margin: 18px 0 8px; }
.tgt-vd-kicker { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; font-size: .82rem; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; }
.tgt-vd-kicker a, .tgt-vd-kicker span { color: var(--cd); text-decoration: none; padding: 3px 10px; border-radius: 999px; background: color-mix(in srgb, var(--cd) 12%, var(--tgt-card)); }
.tgt-vd-title { margin: 0 0 10px; font-size: clamp(1.4rem, 3.4vw, 2rem); font-weight: 900; line-height: 1.25; color: var(--tgt-ink); }
.tgt-vd-topics { margin-bottom: 8px; }
.tgt-vd-channel { margin: 6px 0 0; font-size: .92rem; color: var(--tgt-muted); }
.tgt-vd-channel a { color: var(--tgt-muted); }
.tgt-vd-practice { display: flex; align-items: center; gap: 14px; margin: 16px 0; padding: 14px 18px; border-radius: var(--tgt-radius, 18px); text-decoration: none; color: var(--tgt-ink); background: color-mix(in srgb, var(--tgt-green, #22b07d) 12%, var(--tgt-card)); border: 2px solid color-mix(in srgb, var(--tgt-green, #22b07d) 40%, transparent); }
.tgt-vd-practice:hover { border-color: var(--tgt-green, #22b07d); color: var(--tgt-ink); }
.tgt-vd-practice__icon { font-size: 28px; }
.tgt-vd-practice__label { display: block; font-size: .8rem; font-weight: 900; text-transform: uppercase; color: var(--tgt-ok, #16a34a); }
.tgt-vd-practice__name { display: block; font-weight: 900; font-size: 1.05rem; }
.tgt-vd-practice__go { margin-left: auto; font-size: 1.4rem; font-weight: 900; color: var(--tgt-ok, #16a34a); }
.tgt-vd-content { margin-top: 12px; color: var(--tgt-ink); }
.tgt-vd-content > *:first-child { margin-top: 0; }

.tgt-vd-side { position: sticky; top: 90px; background: var(--tgt-card); border: 1px solid var(--tgt-line); border-radius: var(--tgt-radius, 18px); padding: 14px; box-shadow: var(--tgt-shadow); max-height: calc(100vh - 110px); overflow: auto; }
.tgt-vd-side__title { margin: 2px 4px 10px; font-size: 1.05rem; font-weight: 900; color: var(--tgt-ink); }
.tgt-vd-chapters { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.tgt-vd-chapters a { display: flex; gap: 10px; align-items: baseline; padding: 8px 10px; border-radius: 10px; text-decoration: none; color: var(--tgt-ink); font-weight: 700; font-size: .95rem; line-height: 1.35; }
.tgt-vd-chapters a:hover, .tgt-vd-chapters a.is-current { background: color-mix(in srgb, var(--cd) 12%, var(--tgt-card)); }
.tgt-vd-chapters__time { flex: none; min-width: 46px; font-variant-numeric: tabular-nums; font-weight: 900; color: var(--cd); }
.tgt-vd-related { margin-top: 34px; }
.tgt-vd-comments { margin-top: 34px; max-width: 860px; }

@media (max-width: 900px) {
	.tgt-vd-layout:has(.tgt-vd-side) { grid-template-columns: minmax(0, 1fr); }
	.tgt-vd-side { position: static; max-height: none; }
}
@media (max-width: 600px) {
	.tgt-vd-wrap { padding: 0 14px; }
	.tgt-vd-page .tgt-vd-main .tgt-vd-player { margin: 0 -14px; width: calc(100% + 28px); border-radius: 0; }
	.tgt-vd-grid { grid-template-columns: 1fr; gap: 14px; }
	.tgt-vd-filter__select { flex: 1 1 calc(50% - 5px); }
	.tgt-vd-filter__go { flex: 1 1 100%; }
	.tgt-vd-filter.is-js .tgt-vd-filter__go { display: none; }
	.tgt-vd-filter.is-js .tgt-vd-filter__search { flex-basis: 100%; }
	.tgt-vd-chips { flex-wrap: nowrap; overflow-x: auto; margin-right: -14px; padding-bottom: 4px; scrollbar-width: none; }
	.tgt-vd-chip { flex: none; }
	.tgt-vd-player__btn svg { width: 60px; }
}
@media (prefers-reduced-motion: reduce) {
	.tgt-vd-card, .tgt-vd-card__thumb img, .tgt-vd-player__poster img { transition: none; }
}