/* =============================================================================
   Page: Video Hướng Dẫn
   ============================================================================= */

/* =============================================================================
   VIDEOS PAGE WRAPPER
   ============================================================================= */

.videos-page {
  padding-block: 0 var(--space-xl);
  background-color: var(--color-background);
}

.videos-page__container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-gutter);
}

/* =============================================================================
   VIDEOS BAR — Filter pills + Search
   ============================================================================= */

.videos-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(253, 248, 248, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-surface-variant);
  padding-block: var(--space-md);
  margin-bottom: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .videos-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
  }
}

/* ── Category pills ── */

.videos-bar__pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
  flex-shrink: 1;
  min-width: 0;
}

.videos-bar__pills::-webkit-scrollbar {
  display: none;
}

.videos-bar__pill {
  flex-shrink: 0;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: var(--fz-label-md);
  font-weight: var(--fw-label-md);
  letter-spacing: var(--ls-label-md);
  text-transform: uppercase;
  white-space: nowrap;
  background-color: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  border: 1px solid rgba(196, 199, 199, 0.25);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.videos-bar__pill:hover {
  background-color: var(--color-surface-container-high);
  color: var(--color-on-surface);
}

.videos-bar__pill--active {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.videos-bar__pill--active:hover {
  background-color: #1a1a1a;
  border-color: #1a1a1a;
}

/* ── Search input ── */

.videos-bar__search {
  position: relative;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  width: 100%;
}

@media (min-width: 768px) {
  .videos-bar__search {
    width: 260px;
  }
}

.videos-bar__search-icon {
  position: absolute;
  left: 0.875rem;
  color: var(--color-on-surface-variant);
  font-size: 18px;
  pointer-events: none;
}

.videos-bar__search-input {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.75rem;
  border-radius: 999px;
  border: 1px solid rgba(196, 199, 199, 0.35);
  background-color: var(--color-surface-container-low);
  color: var(--color-on-surface);
  font-size: var(--fz-body-sm);
  font-weight: 400;
  line-height: var(--lh-body-sm);
  outline: none;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.videos-bar__search-input::placeholder {
  color: var(--color-outline);
}

.videos-bar__search-input:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px var(--color-gold-muted);
}

/* =============================================================================
   VIDEOS GRID
   ============================================================================= */

.videos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .videos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .videos-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md) var(--space-md);
  }
}

@media (min-width: 1280px) {
  .videos-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* =============================================================================
   VIDEO CARD
   ============================================================================= */

.video-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-surface-variant);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

/* ── Thumbnail ── */

.video-card__thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-primary-container);
  border: none;
  padding: 0;
}

.video-card__thumb--playable {
  cursor: pointer;
}

.video-card__thumb-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--color-primary-container);
  transition: transform var(--transition-slow);
}

.video-card:hover .video-card__thumb-bg {
  transform: scale(1.04);
}

.video-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.55) 0%,
    rgba(0, 0, 0, 0.1) 60%,
    transparent 100%
  );
  transition: opacity var(--transition-base);
}

.video-card:hover .video-card__thumb-overlay {
  opacity: 0.8;
}

/* Play button */

.video-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.video-card__play .material-symbols-outlined {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.92);
  color: var(--color-primary);
  font-size: 28px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  transition:
    transform var(--transition-base),
    background-color var(--transition-base);
}

.video-card:hover .video-card__play .material-symbols-outlined {
  transform: scale(1.1);
  background-color: var(--color-gold);
  color: #fff;
}

/* Duration badge */

.video-card__duration {
  position: absolute;
  bottom: 0.625rem;
  right: 0.625rem;
  padding: 0.2rem 0.5rem;
  border-radius: calc(var(--radius) * 2);
  background-color: rgba(0, 0, 0, 0.82);
  color: #fff;
  font-family: var(--font-sans);
  font-size: var(--fz-label-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

/* ── Card Body ── */

.video-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: var(--space-md);
  flex: 1;
}

.video-card__cat {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fz-label-sm);
  font-weight: var(--fw-label-sm);
  letter-spacing: var(--ls-label-sm);
  text-transform: uppercase;
  color: var(--color-gold);
}

.video-card__title {
  font-family: var(--font-serif);
  font-size: var(--fz-headline-sm);
  line-height: var(--lh-headline-sm);
  font-weight: 500;
  color: var(--color-on-surface);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card__channel {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-sans);
  font-size: var(--fz-body-sm);
  font-weight: 400;
  color: var(--color-secondary);
}

.video-card__channel .material-symbols-outlined {
  font-size: 15px;
  color: var(--color-gold);
}

.video-card__desc {
  font-family: var(--font-sans);
  font-size: var(--fz-body-sm);
  line-height: var(--lh-body-sm);
  color: var(--color-on-surface-variant);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* Watch button */

.video-card__watch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  font-size: var(--fz-label-md);
  font-weight: var(--fw-label-md);
  letter-spacing: var(--ls-label-md);
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition:
    background-color var(--transition-base),
    transform var(--transition-base);
  align-self: flex-start;
}

.video-card__watch .material-symbols-outlined {
  font-size: 18px;
}

.video-card__watch:hover {
  background-color: var(--color-gold);
  transform: translateX(2px);
}

/* =============================================================================
   VIDEO CATEGORY GRID  (archive-video: danh sách video_cat)
   ============================================================================= */

.vcat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  padding-top: var(--space-md);
}

@media (min-width: 480px) {
  .vcat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .vcat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .vcat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ── Category Card ── */

.vcat-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface-container-lowest);
  border-radius: calc(var(--radius) * 2);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.vcat-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.13);
  transform: translateY(-3px);
}

/* ── Thumbnail (link) ── */

.vcat-card__thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-primary-container);
  text-decoration: none;
  flex-shrink: 0;
}

/* Background image */

.vcat-card__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: var(--color-primary-container);
  transition: transform var(--transition-slow);
}

.vcat-card:hover .vcat-card__bg {
  transform: scale(1.06);
}

/* Subtle dark overlay so play btn is always visible */

.vcat-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.22);
  transition: background var(--transition-base);
}

.vcat-card:hover .vcat-card__overlay {
  background: rgba(0, 0, 0, 0.35);
}

/* ── Play button (centered) ── */

.vcat-card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.vcat-card__play .material-symbols-outlined {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-primary);
  font-size: 30px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition-base), background-color var(--transition-base);
}

.vcat-card:hover .vcat-card__play .material-symbols-outlined {
  transform: scale(1.12);
  background-color: var(--color-gold);
  color: #fff;
}

/* ── Count badge (bottom-right of thumbnail) ── */

.vcat-card__count {
  position: absolute;
  bottom: 0.625rem;
  right: 0.625rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.625rem 0.25rem 0.5rem;
  border-radius: 4px;
  background-color: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-family: var(--font-sans);
  font-size: var(--fz-label-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.4;
  backdrop-filter: blur(4px);
}

.vcat-card__count .material-symbols-outlined {
  font-size: 13px;
  opacity: 0.85;
}

/* ── Body (below thumbnail) ── */

.vcat-card__body {
  padding: 0.875rem var(--space-md);
}

.vcat-card__title {
  font-family: var(--font-sans);
  font-size: var(--fz-body-md);
  line-height: var(--lh-body-md);
  font-weight: 500;
  color: var(--color-on-surface);
  margin: 0;
}

.vcat-card__title-link {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

.vcat-card__title-link:hover {
  color: var(--color-gold);
}

/* =============================================================================
   EMPTY / NO RESULTS STATES
   ============================================================================= */

.videos-empty,
.videos-noresult {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-gutter);
  text-align: center;
}

.videos-empty__icon,
.videos-noresult__icon {
  font-size: 56px;
  color: var(--color-outline-variant);
  display: block;
}

.videos-empty__text,
.videos-noresult__text {
  font-family: var(--font-sans);
  font-size: var(--fz-body-lg);
  color: var(--color-on-surface-variant);
  max-width: 30rem;
}

.videos-noresult__reset {
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-sans);
  font-size: var(--fz-label-md);
  font-weight: var(--fw-label-md);
  letter-spacing: var(--ls-label-md);
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition-base);
}

.videos-noresult__reset:hover {
  background-color: var(--color-gold);
}

/* =============================================================================
   VCAT CARD — Popup variant
   ============================================================================= */

.vcat-card--popup {
  cursor: pointer;
}

.vcat-card--popup .vcat-card__thumb {
  display: block;
}

/* =============================================================================
   VCAT POPUP — Danh sách bài viết theo taxonomy
   ============================================================================= */

.vcat-popup {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.vcat-popup[hidden] {
  display: none;
}

.vcat-popup__bd {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.vcat-popup__box {
  position: relative;
  background: var(--color-surface-container-lowest);
  border-radius: calc(var(--radius) * 2);
  width: 100%;
  max-width: 640px;
  max-height: 80dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.22);
}

.vcat-popup__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-surface-variant);
  flex-shrink: 0;
}

.vcat-popup__title {
  font-family: var(--font-serif);
  font-size: var(--fz-headline-sm);
  line-height: var(--lh-headline-sm);
  font-weight: 500;
  color: var(--color-on-surface);
  margin: 0;
}

.vcat-popup__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-on-surface-variant);
  flex-shrink: 0;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.vcat-popup__close:hover {
  background-color: var(--color-surface-container);
  color: var(--color-on-surface);
}

.vcat-popup__list {
  overflow-y: auto;
  flex: 1;
  padding: 0.5rem 0;
  margin: 0;
  list-style: none;
  scrollbar-width: thin;
}

.vcat-popup__item-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  transition: background-color var(--transition-base);
}

.vcat-popup__item-link:hover {
  background-color: var(--color-surface-container-low);
}

.vcat-popup__item-thumb {
  width: 96px;
  height: 54px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-surface-container-high);
}

.vcat-popup__item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.vcat-popup__item-title {
  font-family: var(--font-sans);
  font-size: var(--fz-body-md);
  line-height: var(--lh-body-md);
  font-weight: 400;
  color: var(--color-on-surface);
}

.vcat-popup__item-link:hover .vcat-popup__item-title {
  color: var(--color-gold);
}