/* ========================================================================
   Culture Story Cards v3 — Category Tabs + Grid + Detail Overlay
   Version: 20260713k
   ======================================================================== */

/* ── Section container ── */
.culture-stories-section {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px 12px 24px;
}

.culture-stories-header {
  text-align: center;
  margin-bottom: 10px;
}

/* ── Category tab bar (like quick experience) ── */
/* Category tab scroll indicator */
.story-cat-bar-wrap {
  position: relative;
  margin: 0 -16px;
  padding: 0 16px;
}
.story-cat-bar-wrap::before,
.story-cat-bar-wrap::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 12px;
  width: 28px;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 2;
}
.story-cat-bar-wrap::before {
  left: 0;
  background: linear-gradient(to right, var(--bg), transparent);
  opacity: 0;
}
.story-cat-bar-wrap::after {
  right: 0;
  background: linear-gradient(to left, var(--bg), transparent);
  opacity: 1;
}
.story-cat-bar-wrap.scroll-start::before {
  opacity: 1;
}
.story-cat-bar-wrap.scroll-end::after {
  opacity: 0;
}

.story-cat-bar {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px 0 12px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.story-cat-bar::-webkit-scrollbar { display: none; }

.story-cat-btn {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: 14px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.story-cat-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.story-cat-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text);
}

.story-cat-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.story-cat-label {
  font-size: 0.68rem;
}
}

.culture-stories-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 2px;
}

.culture-stories-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* ── Grid of preview cards ── */
.story-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.story-grid-card {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  background: var(--bg-card);
}

.story-grid-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.story-grid-card:active {
  transform: scale(0.97);
}

.story-grid-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-alt);
}

.story-grid-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  height: 108%;
  display: block;
}

.story-grid-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px 12px 6px;
  background: linear-gradient(transparent, rgba(0,0,0,0.65));
}

.story-grid-word {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  text-shadow: 0 2px 6px rgba(0,0,0,0.5);
  line-height: 1.2;
}

.story-grid-py {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.8);
  margin-top: 1px;
}

.story-grid-cat {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 3px 8px;
  background: rgba(255,255,255,0.9);
  border-radius: 10px;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--primary);
}

.story-grid-info {
  padding: 8px 12px 10px;
}

.story-grid-trans {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Full-screen detail overlay ── */
.story-detail-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background: var(--bg);
  overflow: hidden;
  animation: storySlideIn 0.25s ease;
}

@keyframes storySlideIn {
  from { transform: translateY(100%); opacity: 0.5; }
  to { transform: translateY(0); opacity: 1; }
}

.story-detail-page {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 680px;
  margin: 0 auto;
}

.story-detail-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  flex-shrink: 0;
}

.story-detail-back {
  border: none;
  background: transparent;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.story-detail-back:hover {
  background: var(--bg-alt);
}

.story-detail-back:active {
  background: var(--primary-light);
}

.story-detail-counter {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
}

.story-detail-scroll {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px 16px 24px;
}

/* ── Story card (detail) ── */
.story-card {
  background: var(--bg-card);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.story-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-alt);
}

.story-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  height: 108%;
  display: block;
}

.story-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 20px 16px;
  background: linear-gradient(transparent 0%, rgba(0,0,0,0.25) 40%, rgba(0,0,0,0.8) 100%);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.story-word-cn {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text);
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  line-height: 1.2;
}

.story-word-py {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  margin-top: 2px;
}

.story-word-trans {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-top: 2px;
}

.story-cat-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  background: rgba(255,255,255,0.9);
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
}

.story-content {
  padding: 20px;
}

/* Language bar */
.story-lang-bar {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  justify-content: center;
}

.story-lang-btn {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.story-lang-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.story-lang-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text);
}

.story-section-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.story-section-icon {
  font-size: 0.9rem;
}

.story-text {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text);
  text-align: justify;
}

.story-example {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
}

.story-example-cn {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.story-example-trans {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
}

.story-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.story-btn {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.story-btn-listen {
  background: var(--bg-alt);
  color: var(--text);
}

.story-btn-listen:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.story-btn-listen:active {
  transform: scale(0.96);
}

.story-btn-add {
  background: var(--primary);
  color: var(--text);
}

.story-btn-add:hover {
  background: var(--primary-dark);
}

.story-btn-add:active {
  transform: scale(0.96);
}

.story-btn-add.added {
  background: var(--success, var(--primary));
}

/* Detail navigation */
.story-detail-nav {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  justify-content: space-between;
}

.story-nav-btn {
  flex: 1;
  padding: 10px 20px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.story-nav-btn:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

.story-nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}




  transform: translateY(-50%);
  font-size: 0.85rem;
  opacity: 0.5;
}

/* ── Skeleton loading ── */
.story-skeleton {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 16px 0;
}
@media (min-width: 768px) {
  .story-skeleton {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 1024px) {
  .story-skeleton {
    grid-template-columns: repeat(4, 1fr);
  }
}
.story-skeleton-card {
  border-radius: var(--radius, 12px);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.story-skeleton-img {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(110deg, var(--bg-alt) 30%, var(--bg) 50%, var(--bg-alt) 70%);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}
.story-skeleton-info {
  padding: 12px;
}
.story-skeleton-line {
  height: 14px;
  margin-bottom: 8px;
  border-radius: 4px;
  background: linear-gradient(110deg, var(--bg-alt) 30%, var(--bg) 50%, var(--bg-alt) 70%);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}
.story-skeleton-line:last-child {
  width: 60%;
  margin-bottom: 0;
}
@keyframes skeleton-pulse {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
  100% { opacity: 0.6; }
}

/* ── Image blur-up progressive loading ── */
.story-img-blur {
  opacity: 0;
  filter: blur(8px);
  transition: opacity 0.4s ease, filter 0.4s ease;
}
.story-img-blur[data-loaded=true] {
  opacity: 1;
  filter: blur(0);
}


/* ── Desktop responsive ── */
@media (min-width: 768px) {
  .culture-stories-section {
    max-width: 960px;
    padding: 24px 20px 32px;
  }
  .story-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .story-detail-page {
    max-width: 800px;
  }
  .story-grid-word {
    font-size: 1.2rem;
  }
  .story-grid-trans {
    font-size: 0.85rem;
  }
}

@media (min-width: 1024px) {
  .culture-stories-section {
    max-width: 1100px;
    padding: 32px 24px 40px;
  }
  .story-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .culture-stories-section {
    padding: 12px 10px 20px;
  }
  .story-grid {
    gap: 10px;
  }
  .story-grid-img-wrap {
    /* aspect-ratio handles height */
  }
  .story-grid-word {
    font-size: 1.05rem;
  }
  .story-image-wrap {
    /* aspect-ratio handles height */
  }
  .story-word-cn {
    font-size: 1.5rem;
  }
  .story-text {
    font-size: 0.82rem;
    line-height: 1.65;
  }
}

/* ── Dark mode ── */
[data-theme="dark"] .story-grid-card {
  background: var(--bg-card);
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

[data-theme="dark"] .story-detail-overlay {
  background: var(--bg);
}

[data-theme="dark"] .story-detail-topbar {
  background: var(--bg-card);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

[data-theme="dark"] .story-card {
  background: var(--bg-card);
  box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}

[data-theme="dark"] .story-text {
  color: var(--text);
}

[data-theme="dark"] .story-example {
  background: rgba(255,255,255,0.05);
}

[data-theme="dark"] .story-btn-listen {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}

[data-theme="dark"] .story-nav-btn {
  border-color: rgba(255,255,255,0.15);
  color: var(--text-muted);
  background: var(--bg-card);
}