/* ===== Share Button (Session Page) ===== */
.btn-share {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-share:hover { border-color: var(--primary); color: var(--primary-light); }
.btn-share.shared { border-color: var(--success); color: var(--success); }

/* ===== Trending Carousel (Index Page) ===== */
.trending-section { margin: 0 0 24px; overflow: hidden; }
.trending-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.trending-title { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.trending-see-all { font-size: 0.8rem; color: var(--primary-light); text-decoration: none; }
.trending-see-all:hover { text-decoration: underline; }

.trending-track-wrapper {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, black 4%, black 96%, transparent 100%);
}

.trending-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marquee-scroll 40s linear infinite;
}
.trending-track-wrapper:hover .trending-track { animation-play-state: paused; }

@keyframes marquee-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.trending-card {
  flex-shrink: 0;
  width: 210px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.trending-card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}
.trending-card-topic {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.trending-card-meta {
  display: flex;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  align-items: center;
}
.trending-card-meta span { display: flex; align-items: center; gap: 3px; }
.trending-card-owner {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.trending-card-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-surface);
  color: var(--text-muted);
  align-self: flex-start;
}
.trending-card-featured { border-color: var(--primary-light); }
.trending-card-featured .trending-card-badge {
  background: var(--primary);
  color: #fff;
}

/* ===== Shared Session Page ===== */
.shared-page { max-width: 800px; margin: 0 auto; padding: 24px 16px 60px; }
.shared-header { margin-bottom: 24px; }
.shared-back { font-size: 0.85rem; color: var(--text-muted); text-decoration: none; }
.shared-back:hover { color: var(--primary-light); }
.shared-title { font-size: 1.6rem; font-weight: 700; margin: 8px 0 6px; }
.shared-meta { font-size: 0.85rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.shared-header-actions { display: flex; gap: 8px; margin-top: 12px; }
.shared-plan-title { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 20px; font-style: italic; }

.shared-like-btn { display: flex; align-items: center; gap: 4px; }
.shared-like-btn.liked { color: #ef4444; border-color: #ef4444; }

.shared-steps { display: flex; flex-direction: column; gap: 8px; }
.shared-step { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.shared-step-header {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; cursor: pointer;
  background: var(--bg-card);
  transition: background 0.15s;
}
.shared-step-header:hover { background: var(--bg-hover); }
.shared-step-number {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 600; flex-shrink: 0;
}
.shared-step-title { flex: 1; font-weight: 500; }
.shared-step-toggle { color: var(--text-muted); font-size: 0.9rem; }
.shared-step-content {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  line-height: 1.7;
}
.shared-step-content h1,
.shared-step-content h2,
.shared-step-content h3 { margin: 16px 0 8px; }
.shared-step-content p { margin-bottom: 10px; }
.shared-step-content pre { background: var(--code-bg); color: var(--code-text); padding: 12px; border-radius: 8px; overflow-x: auto; margin: 10px 0; }
.shared-step-content code { font-size: 0.9em; }
.shared-step-content ul, .shared-step-content ol { padding-left: 24px; margin-bottom: 10px; }

/* ===== Mobile ===== */
@media (max-width: 768px) {
  .trending-card { width: 170px; padding: 12px; }
  .trending-card-topic { font-size: 0.82rem; }
  .shared-page { padding: 16px 12px 40px; }
  .shared-title { font-size: 1.3rem; }
}