/* ============================================================
   SIDEBAR.CSS -- Trending Reads (sticky YouTube-like sidebar)
   ============================================================ */

/* Sticky sidebar container */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--sp-5));
  height: calc(100vh - var(--header-height) - var(--sp-10));
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  /* Custom scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) transparent;
  padding-right: 2px;
  min-width: 0;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
}

/* Ad slot -- sidebar */
.ad-slot-sidebar {
  min-height: 0;
  display: none;
  flex-shrink: 0;
}

/* ============================================================
   Trending Reads widget
   ============================================================ */
.trending-reads {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  flex-shrink: 0;
  min-width: 0;
}

.trending-reads-header {
  padding: var(--sp-4) var(--sp-5);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.trending-reads-title {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.trending-reads-title .flame-icon {
  font-size: 16px;
  animation: pulse-flame 1.8s ease-in-out infinite alternate;
}

@keyframes pulse-flame {
  from { transform: scale(1) rotate(-3deg); }
  to   { transform: scale(1.15) rotate(3deg); }
}

.trending-reads-list { list-style: none; padding: 0; margin: 0; }

/* Each trending card */
.trending-card {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-4);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  transition: background var(--t-base);
  cursor: pointer;
}
.trending-card:last-child { border-bottom: none; }
.trending-card:hover { background: var(--color-primary-light); }

.trending-thumb {
  width: 76px;
  height: 56px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background: var(--color-bg-tertiary);
  transition: transform var(--t-base);
}
.trending-card:hover .trending-thumb { transform: scale(1.03); }

.trending-card-meta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  min-width: 0;
}

.trending-card-rank {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.trending-card-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  transition: color var(--t-base);
}
.trending-card:hover .trending-card-title { color: var(--color-primary); }

.trending-card-date {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ============================================================
   Sidebar -- blog list page version (no sticky needed)
   ============================================================ */
.sidebar-list-page {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

/* ============================================================
   Category widget
   ============================================================ */
.sidebar-widget {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sidebar-widget-header {
  padding: var(--sp-4) var(--sp-5);
  background: var(--color-bg-tertiary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.cat-list { list-style: none; padding: var(--sp-3) var(--sp-4); margin: 0; }
.cat-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: all var(--t-base);
}
.cat-list li a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}
.cat-count {
  font-size: 12px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 1px 8px;
  font-weight: 600;
  transition: all var(--t-base);
}
.cat-list li a:hover .cat-count {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ============================================================
   Mobile -- sidebar becomes horizontal scroll row
   ============================================================ */
@media (max-width: 1024px) {
  .sidebar {
    position: static;
    height: auto;
    overflow: visible;
    overflow-x: visible;
  }
  .trending-reads { overflow: visible; }
  .trending-reads-list {
    display: flex;
    flex-direction: row;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) transparent;
    -webkit-overflow-scrolling: touch;
    gap: 0;
  }
  .trending-reads-list::-webkit-scrollbar { height: 3px; }
  .trending-reads-list::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 3px; }

  .trending-card {
    flex-direction: column;
    min-width: 160px;
    max-width: 160px;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
    padding: var(--sp-4);
  }
  .trending-thumb { width: 100%; height: 90px; }
  .trending-card:last-child { border-right: none; }
}

@media (max-width: 768px) {
  .ad-slot-sidebar { min-height: 0; }
}