/* css/overlap.css — Overlap Finder view */

.overlap-wrapper { max-width: 960px; margin: 0 auto; padding: 20px 16px; }

.overlap-stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px; margin-bottom: 20px;
}
.ov-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}
.ov-stat-val { font-size: 22px; font-weight: 700; color: var(--text); }
.ov-stat-label { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* Category filter pills */
.overlap-cat-filter {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px;
  overflow-x: auto; padding-bottom: 4px;
}
.cat-btn {
  padding: 6px 14px;
  border: 1px solid var(--border); border-radius: 999px;
  background: transparent; color: var(--text-muted);
  font-size: 11.5px; font-weight: 500; font-family: inherit;
  cursor: pointer; transition: all var(--dur) var(--ease);
  white-space: nowrap;
}
.cat-btn:hover { border-color: var(--border-glow); color: var(--text-sec); }
.cat-btn.active { border-color: var(--ras); color: var(--ras); background: #6366f10d; }

/* Category blocks & cards */
.overlap-category-block { margin-bottom: 24px; }
.overlap-cat-title {
  font-size: 15px; font-weight: 700; margin-bottom: 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
}

.overlap-cards-wrapper {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 10px;
}

.overlap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  transition: all var(--dur) var(--ease);
}
.overlap-card:hover { border-color: var(--border-glow); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.overlap-card.partial-done { border-left: 3px solid var(--sci); }
.overlap-card.both-done    { border-left: 3px solid var(--gk); background: #10b98106; }

.overlap-card-header { margin-bottom: 10px; }
.overlap-common-badge {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; margin-bottom: 6px;
}
.overlap-common-badge .icon { color: var(--ras); flex-shrink: 0; }
.overlap-status-pills { display: flex; gap: 6px; flex-wrap: wrap; }
.status-pill {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 999px;
  font-size: 10px; font-weight: 600;
}
.status-pill.pending { background: var(--bg-surface); color: var(--text-muted); }
.status-pill.done    { background: #10b98118; color: var(--gk); }
.status-pill.mastered { background: #10b98128; color: var(--gk); }

/* Split view */
.overlap-card-split {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: 8px; align-items: stretch;
}
.split-side {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 10px;
}
.split-side.done { background: #10b9810a; border-color: #10b98130; }
.side-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 6px;
}
.overlap-check-label {
  display: flex; align-items: center; gap: 4px;
  font-size: 10px; color: var(--text-muted); cursor: pointer;
}
.overlap-checkbox { width: 14px; height: 14px; accent-color: var(--gk); cursor: pointer; }
.side-topic-title { font-size: 12px; color: var(--text-sec); line-height: 1.4; }

.split-divider {
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .overlap-cards-wrapper { grid-template-columns: 1fr; }
  .overlap-card-split { grid-template-columns: 1fr; gap: 6px; }
  .split-divider { transform: rotate(90deg); }
}