/* ==========================================================================
  AIclinics Treatments Index ([treatments_index] shortcode)
  Alphabetical index with live search, sticky letter bar, count badges
  ========================================================================== */

.tr-index {
  margin: 24px 0 40px;
}

.tr-index__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.tr-index__title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-black, #1A1A1A);
  margin: 0;
}

/* Search with icon */
.tr-index__search-wrap {
  position: relative;
  width: 100%;
  max-width: 360px;
}

.tr-index__search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light, #999);
  pointer-events: none;
}

.tr-index__search {
  width: 100%;
  padding: 11px 16px 11px 42px;
  border: 1px solid var(--border, #E0E0E0);
  border-radius: var(--radius, 7px);
  font-size: 15px;
  font-family: var(--font, 'Nunito', sans-serif);
  color: var(--text, #4B4F58);
  background: var(--bg, #fff);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.tr-index__search:focus {
  border-color: var(--primary-color, #09CA8F);
  box-shadow: 0 0 0 3px rgba(9, 202, 143, .15);
}

.tr-index__search-count {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: var(--text-light, #999);
  pointer-events: none;
}

/* Letter navigation */
.tr-index__letters {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 28px;
  padding: 12px 0;
  z-index: 10;
  background: var(--bg, #fff);
  transition: box-shadow .2s;
}

.tr-index__letters--sticky {
  position: sticky;
  top: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  padding: 10px 0;
  margin-left: -4px;
  margin-right: -4px;
  padding-left: 4px;
  padding-right: 4px;
}

.tr-index__letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 6px;
  border-radius: var(--radius, 7px);
  font-size: 13px;
  font-weight: 700;
  color: var(--text, #4B4F58);
  background: var(--bg-alt, #FAFAFA);
  transition: background .2s, color .2s, transform .15s;
  text-decoration: none;
  position: relative;
}

.tr-index__letter:hover {
  background: var(--primary-color, #09CA8F);
  color: #fff;
  transform: translateY(-1px);
}

.tr-index__letter--empty {
  opacity: .35;
  pointer-events: none;
}

.tr-index__letter--hidden {
  opacity: .35;
}

/* Count badge on hover */
.tr-index__letter[data-count]:hover::after {
  content: attr(data-count);
  position: absolute;
  top: -8px;
  right: -6px;
  background: var(--primary-color, #09CA8F);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  line-height: 1;
}

/* Multi-column list */
.tr-index__list {
  columns: 1;
  column-gap: 32px;
}

.tr-index__list--cols-2 { columns: 2; }
.tr-index__list--cols-3 { columns: 3; }

@media (max-width: 991px) {
  .tr-index__list--cols-3 { columns: 2; }
}

@media (max-width: 768px) {
  .tr-index__list--cols-2,
  .tr-index__list--cols-3 {
    columns: 1;
  }
  .tr-index__head {
    flex-direction: column;
    align-items: stretch;
  }
  .tr-index__search-wrap {
    max-width: 100%;
  }
}

/* Letter section */
.tr-letter {
  break-inside: avoid;
  margin-bottom: 28px;
}

.tr-letter__cap {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-color, #09CA8F);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--teal-light, #E8F8F2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tr-letter__count {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light, #999);
  background: var(--bg-alt, #f5f5f5);
  padding: 2px 8px;
  border-radius: 10px;
}

.tr-letter__ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tr-letter__li {
  margin-bottom: 1px;
}

.tr-letter__li a {
  display: block;
  padding: 8px 12px;
  color: var(--text, #4B4F58);
  font-size: 15px;
  text-decoration: none;
  transition: color .2s, background .2s, padding-left .2s;
  border-radius: var(--radius, 7px);
}

.tr-letter__li a:hover {
  color: var(--primary-color, #09CA8F);
  background: var(--teal-light, #E8F8F2);
  padding-left: 18px;
}

/* No results */
.tr-index__no-results {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light, #999);
  font-size: 16px;
}