/* ==============================================
   Bee Park — E-Learning Card Grid
   /assets/css/elearning.css  v2.0
   ============================================== */

:root {
  --el-gold:     #C9A227;
  --el-gold-lt:  #E2C05A;
  --el-amber:    #A8660A;
  --el-black:    #0f0d08;
  --el-cream:    #F8F2E4;
  --el-cream-dk: #EDE2C8;
  --el-warm-wt:  #FDFAF4;
  --el-text:     #1E1A10;
  --el-text-md:  #4A3F28;
  --el-text-lt:  #7A6A4A;
  --el-font-heading: 'LINESeedSansTH', 'DB Heavent Cond', 'IBM Plex Sans Thai', sans-serif;
  --el-font-body:    'IBM Plex Sans Thai', sans-serif;
}

.bp-elearning {
  padding: 3rem 0;
  font-family: var(--el-font-body);
}

/* ── Header ── */
.bp-el-head { margin-bottom: 1.25rem; }

.bp-el-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--el-gold);
  margin-bottom: 10px;
}

.bp-el-tag::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--el-gold);
}

.bp-el-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--el-text);
  margin: 0;
  font-family: var(--el-font-heading);
}

/* ── Filters ── */
.bp-el-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.bp-el-filter {
  font-size: 13px;
  font-family: var(--el-font-body);
  padding: 6px 18px;
  border-radius: 2px;
  border: 1px solid var(--el-cream-dk);
  color: var(--el-text-lt);
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.02em;
}

.bp-el-filter:hover {
  border-color: var(--el-gold);
  color: var(--el-amber);
}

.bp-el-filter.active {
  background: var(--el-gold);
  border-color: var(--el-gold);
  color: var(--el-black);
  font-weight: 600;
}

/* ── Card Grid ── */
.bp-el-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ── Card ── */
.bp-el-card {
  background: #fff;
  border: 1px solid var(--el-cream-dk);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
  outline: none;
}

.bp-el-card:hover {
  border-color: var(--el-gold);
  transform: translateY(-2px);
}

.bp-el-card:focus {
  box-shadow: 0 0 0 2px var(--el-gold);
}

.bp-el-card.hidden { display: none; }

/* Thumbnail */
.bp-el-thumb {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--el-black);
  overflow: hidden;
}

.bp-el-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.bp-el-card:hover .bp-el-thumb img {
  transform: scale(1.04);
}

.bp-el-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 13, 8, 0.25) !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  opacity: 1 !important;
  transition: background 0.2s;
}

.bp-el-card:hover .bp-el-overlay {
  background: rgba(15, 13, 8, 0.55);
}

.bp-el-play-btn {
  width: 52px;
  height: 52px;
  background: rgba(201, 162, 39, 0.75);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, transform 0.2s;
}

.bp-el-card:hover .bp-el-play-btn {
  background: rgba(201, 162, 39, 1);
  transform: scale(1.1);
}

.bp-el-play-btn {
  width: 52px;
  height: 52px;
  background: rgba(201, 162, 39, 0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bp-el-play-btn i {
  font-size: 22px;
  color: var(--el-black);
  margin-left: 3px;
}

.bp-el-dur {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(15, 13, 8, 0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 2px;
  font-family: var(--el-font-body);
}

/* Card body */
.bp-el-body {
  padding: 14px 16px;
  background: var(--el-warm-wt);
}

.bp-el-cat {
  font-size: 10px;
  font-weight: 600;
  color: var(--el-amber);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}

.bp-el-vtitle {
  font-size: 18px;
  font-weight: 600;
  color: var(--el-text);
  line-height: 1.45;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--el-font-heading);
}

.bp-el-meta {
  font-size: 12px;
  color: var(--el-text-lt);
  display: flex;
  gap: 12px;
}

.bp-el-meta i {
  font-size: 12px;
  vertical-align: -2px;
  margin-right: 3px;
}

/* ── Lightbox Modal ── */
.bp-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 7, 2, 0.88);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.bp-modal-overlay.open { display: flex; }

.bp-modal {
  background: var(--el-black);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: 4px;
  overflow: hidden;
  width: min(900px, 100%);
  position: relative;
}

.bp-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  background: rgba(201, 162, 39, 0.2);
  border: 1px solid rgba(201, 162, 39, 0.4);
  color: var(--el-gold);
  width: 36px;
  height: 36px;
  border-radius: 2px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.2s;
}

.bp-modal-close:hover { background: rgba(201, 162, 39, 0.35); }

.bp-modal-player {
  aspect-ratio: 16 / 9;
  width: 100%;
}

.bp-modal-player iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.bp-el-empty {
  color: var(--el-text-lt);
  font-size: 14px;
  padding: 1rem 0;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .bp-el-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .bp-el-grid { grid-template-columns: 1fr; }
  .bp-el-title { font-size: 1.5rem; }
}