/* quintaedizione.online — Collection Styles */

/* ========================================================================
   STATS BANNER
   ======================================================================== */

.stats-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}
.stats-banner-item strong {
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}
.stats-banner-sep { opacity: 0.4; }

/* ========================================================================
   COLLECTION GROUPS
   ======================================================================== */

.collection-group { margin-bottom: var(--space-8); }
.collection-group:last-child { margin-bottom: 0; }

.collection-group-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.collection-group-header::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.collection-group-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* ========================================================================
   COLLECTION GRID
   ======================================================================== */

.collection-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 640px) { .collection-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .collection-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .collection-grid { grid-template-columns: repeat(4, 1fr); } }

.collection-card {
  display: block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  box-shadow: var(--shadow-xs);
}
.collection-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.collection-card:active { transform: translateY(0) scale(0.98); }

.collection-card-content { position: relative; z-index: 1; }
.collection-card-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.collection-card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.75rem; height: 2.75rem; border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  transition: color var(--transition-base), background var(--transition-base);
}
.collection-card-icon .collection-icon-svg {
  width: 24px; height: 24px;
}
.collection-card:hover .collection-card-icon {
  color: var(--primary);
  background: var(--color-bg-tertiary);
}

.collection-card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collection-card-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.collection-badge {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  font-weight: var(--weight-medium);
  flex-shrink: 0;
}

.collection-card-footer {
  margin-top: var(--space-3);
  color: var(--color-link);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.collection-card:hover .collection-card-footer { opacity: 1; }

/* ========================================================================
   STICKY FILTER BAR
   ======================================================================== */

.search-sticky {
  position: sticky;
  top: 0;
  z-index: 10;
  transition: box-shadow var(--transition-base);
}
.search-sticky.scrolled {
  box-shadow: var(--shadow-md);
}

/* ========================================================================
   QUICK FILTER CHIPS
   ======================================================================== */

.quick-filter-bar {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.quick-filter-bar::-webkit-scrollbar { display: none; }

.quick-filter-chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.quick-filter-chip:hover {
  background: var(--color-hover);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.quick-filter-chip.active {
  background: var(--color-text);
  color: var(--color-text-inverse);
  border-color: var(--color-text);
}

/* ========================================================================
   FILTER SYSTEM
   ======================================================================== */

/* Toggle button */
.filter-toggle-btn { padding: 0; align-self: stretch; aspect-ratio: 1; flex-shrink: 0; position: relative; }
.filter-toggle-label { display: none; }
.filter-toggle-badge {
  position: absolute; top: -6px; right: -6px;
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 1.25rem; height: 1.25rem; padding: 0 0.25rem;
  background: var(--primary); color: #fff;
  font-size: var(--text-xs); font-weight: var(--weight-bold); line-height: 1;
  border-radius: var(--radius-full);
}

/* Desktop filter panel */
.filter-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}
.filter-panel > * { overflow: hidden; }
.filter-panel.open { grid-template-rows: 1fr; }
.filter-panel.open > * { overflow: visible; }
.filter-panel-content { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }

/* Multi-select dropdowns */
.filter-multiselect { position: relative; display: inline-block; }
.filter-multiselect-btn { display: inline-flex; align-items: center; gap: var(--space-2); cursor: pointer; white-space: nowrap; text-align: left; }
.filter-multiselect-btn.filter-multiselect-active { background: var(--color-text); color: var(--color-text-inverse); border-color: var(--color-text); }
.filter-multiselect-arrow { font-size: var(--text-xs); opacity: 0.5; }
.filter-multiselect-dropdown {
  display: none; position: absolute; top: calc(100% + 4px); left: 0; z-index: 50;
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); min-width: 220px; max-height: 280px;
  overflow-y: auto; box-shadow: var(--shadow-lg);
}
.filter-multiselect.open .filter-multiselect-dropdown { display: block; animation: slideDown 0.1s ease-out; }

/* Filter option checkboxes (shared by overlay + dropdown) */
.filter-option-checkbox {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3); cursor: pointer;
  font-size: var(--text-sm); transition: background var(--transition-fast); user-select: none;
}
.filter-option-checkbox:hover { background: var(--color-hover); }
.filter-option-checkbox input[type="checkbox"] { cursor: pointer; }
.filter-option-label { flex: 1; }
.filter-option-count { font-size: var(--text-xs); color: var(--color-text-secondary); font-weight: var(--weight-medium); }
.filter-option-disabled { opacity: 0.4; }

/* Filter chips */
.filter-chips-bar {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.filter-chip {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3); background: var(--color-bg-secondary);
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  font-size: var(--text-xs); cursor: pointer; transition: background var(--transition-fast);
}
.filter-chip:hover { background: var(--color-bg-tertiary); }
.filter-chip-label { color: var(--color-text-secondary); }
.filter-chip-value { font-weight: var(--weight-medium); }
.filter-chip-remove { font-size: var(--text-sm); color: var(--color-text-secondary); margin-left: var(--space-1); }
.clear-all-btn {
  display: inline-flex; align-items: center;
  padding: var(--space-1) var(--space-3);
  background: none; border: none;
  font-size: var(--text-xs); font-weight: var(--weight-medium);
  color: var(--primary); cursor: pointer;
  white-space: nowrap;
}
.clear-all-btn:hover { text-decoration: underline; }

/* Mobile filter overlay (hidden on desktop) */
.filter-overlay { display: none; }

@media (max-width: 640px) {
  .filter-overlay { display: none; position: fixed; inset: 0; z-index: 100; background: var(--color-bg); flex-direction: column; }
  .filter-overlay.open { display: flex; }
  .filter-overlay.open .filter-overlay-categories { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
  .filter-overlay.open.detail .filter-overlay-categories { display: none; }
  .filter-overlay-detail { display: none; flex-direction: column; flex: 1; overflow: hidden; }
  .filter-overlay.open.detail .filter-overlay-detail.active { display: flex; }

  .filter-overlay-header {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-4); border-bottom: 1px solid var(--color-border);
    background: var(--color-bg); flex-shrink: 0;
  }
  .filter-overlay-title { flex: 1; font-weight: var(--weight-bold); font-size: var(--text-lg); }
  .filter-overlay-close, .filter-overlay-back {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; padding: 0; background: none;
    border: 1px solid var(--color-border); border-radius: var(--radius-md);
    font-size: var(--text-xl); cursor: pointer; color: var(--color-text); flex-shrink: 0;
  }
  .filter-overlay-close:hover, .filter-overlay-back:hover { background: var(--color-hover); }
  .filter-overlay-clear { background: none; border: none; color: var(--primary); font-size: var(--text-sm); font-weight: var(--weight-medium); cursor: pointer; padding: var(--space-2); }
  .filter-overlay-header-spacer { width: 40px; flex-shrink: 0; }

  .filter-overlay-list { list-style: none; margin: 0; padding: 0; flex: 1; overflow-y: auto; }
  .filter-overlay-category {
    display: flex; align-items: center; gap: var(--space-2);
    padding: var(--space-4); border-bottom: 1px solid var(--color-border);
    cursor: pointer; transition: background var(--transition-fast);
  }
  .filter-overlay-category:hover { background: var(--color-hover); }
  .filter-overlay-category-name { flex: 1; font-weight: var(--weight-medium); }
  .filter-overlay-category-count {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 1.5rem; height: 1.5rem; padding: 0 var(--space-2);
    background: var(--color-text); color: var(--color-text-inverse);
    font-size: var(--text-xs); font-weight: var(--weight-bold); border-radius: var(--radius-full);
  }
  .filter-overlay-category-arrow { font-size: var(--text-xl); color: var(--color-text-secondary); }
  .filter-overlay-options { flex: 1; overflow-y: auto; padding: var(--space-2) 0; }
  .filter-overlay-options .filter-option-checkbox { padding: var(--space-3) var(--space-4); }
}

/* ========================================================================
   RESULT ITEMS (Collection rows)
   ======================================================================== */

.result-item {
  display: block; padding: var(--space-3) var(--space-4);
  text-decoration: none; color: var(--color-text);
  transition: background var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  border-bottom: 1px solid var(--color-border);
  border-left: 3px solid transparent;
}
.result-item:hover {
  background: var(--color-hover);
  border-left-color: var(--primary);
}
.result-item:last-child { border-bottom: none; }

.result-item-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.result-item-header-badges { display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.result-item-title { font-size: var(--text-base); font-weight: var(--weight-semibold); margin: 0; line-height: var(--leading-tight); }
.result-item-meta { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-top: var(--space-1); }

.result-badge {
  display: inline-block; padding: 2px var(--space-2);
  font-size: var(--text-xs); font-weight: var(--weight-medium);
  color: var(--color-text-secondary); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: transparent;
}
.result-badge-translated { color: var(--color-flash-success-text); border-color: var(--color-flash-success-border); background: var(--color-flash-success-bg); }
.result-badge-edition { color: var(--color-primary); border-color: var(--color-primary); font-weight: var(--weight-semibold); }

/* ========================================================================
   PAGINATION
   ======================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-secondary);
}
.pagination-range {
  position: absolute;
  left: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.pagination-controls {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.pagination-pages {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.pagination-page {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.pagination-page:hover {
  background: var(--color-hover);
  border-color: var(--color-border-strong);
}
.pagination-page.active {
  background: var(--color-text);
  color: var(--color-text-inverse);
  border-color: var(--color-text);
  cursor: default;
}
.pagination-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
  height: 2rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Mobile: hide page numbers, show only range + prev/next */
@media (max-width: 640px) {
  .pagination-pages { display: none; }
  .pagination { gap: var(--space-2); }
}