/* ============================================================
   EduMatch — Programs Catalog CSS
   Styled in accordance with assistant.html design system
   ============================================================ */

.catalog-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 28px;
  align-items: start;
  margin-bottom: 72px;
}

.filters-panel {
  background: var(--panel-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  box-shadow: var(--sh-md);
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}

.filters-panel::-webkit-scrollbar {
  width: 6px;
}
.filters-panel::-webkit-scrollbar-track {
  background: transparent;
}
.filters-panel::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border-radius: 999px;
}
.filters-panel::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}

.filters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.filters-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.reset-filters-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  transition: var(--transition);
}

.reset-filters-btn:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.filter-group {
  margin-bottom: 22px;
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-badge-counter {
  font-size: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: var(--r-pill);
}

/* Subject selection chips */
.subject-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.subject-chip {
  cursor: pointer;
  user-select: none;
}

.subject-chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.subject-chip span {
  display: inline-block;
  padding: 6px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  transition: var(--transition);
}

.subject-chip:hover span {
  background: var(--bg-soft-2);
  color: var(--text);
  border-color: var(--line-2);
}

.subject-chip input:checked + span {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--accent-glow);
  font-weight: 600;
}

/* Catalog Main Content */
.catalog-topbar {
  background: var(--panel-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: var(--sh-sm);
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-input-wrap svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  width: 17px;
  height: 17px;
  pointer-events: none;
}

.search-input-wrap input {
  padding-left: 40px;
}

.catalog-sort-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.catalog-sort-wrap label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
  white-space: nowrap;
}

.catalog-sort-wrap select {
  width: auto;
  min-width: 190px;
  padding: 8px 30px 8px 12px;
  font-size: 13px;
}

.active-filters-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.active-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--r-pill);
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
}

.active-filter-pill button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  line-height: 1;
}

.catalog-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding: 0 4px;
}

.catalog-count-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
}

.catalog-count-text strong {
  color: var(--text);
}

.fav-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  transition: var(--transition);
}

.fav-toggle-btn:hover {
  background: var(--bg-soft-2);
  color: var(--text);
}

.fav-toggle-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.programs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

/* Empty State */
.empty-state {
  background: var(--panel-bg);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 60px 24px;
  text-align: center;
  grid-column: 1 / -1;
  box-shadow: var(--sh-sm);
}

.empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--muted);
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
}

.empty-icon svg {
  width: 30px;
  height: 30px;
}

.empty-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
  color: var(--text-2);
  max-width: 420px;
  margin: 0 auto 20px;
}

@media (max-width: 1024px) {
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .filters-panel {
    position: static;
    max-height: none;
    overflow: visible;
  }
}