/*
 * K4U Category Filters
 * Version: 1.1.1
 */

.k4u-category-filter {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  margin: 0 0 20px;
  padding: 14px 16px;
  border: 1px solid var(--k4u-subcat-border, #e5e5e5);
  border-radius: var(--k4u-subcat-radius, 8px);
  background: var(--k4u-subcat-bg, #fff);
  color: var(--k4u-subcat-text, #242626);
}

.k4u-category-filter,
.k4u-category-filter * {
  box-sizing: border-box;
}

.k4u-category-filter__header {
  margin: 0 0 11px;
}

.k4u-category-filter__header > :first-child {
  margin-top: 0;
}

.k4u-category-filter__header > :last-child {
  margin-bottom: 0;
}

.k4u-category-filter__header h2 {
  margin: 0 0 3px;
  color: var(--k4u-subcat-text, #242626);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.3;
}

.k4u-category-filter__header p {
  margin: 0;
  color: var(--k4u-subcat-muted, #555);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.45;
}

.k4u-category-filter__options {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 8px;
  min-width: 0;
}

.k4u-category-filter__option {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 44px;
  margin: 0;
  padding: 9px 15px;
  appearance: none;
  border: 1px solid var(--k4u-subcat-border, #e5e5e5);
  border-radius: var(--k4u-subcat-radius, 8px);
  background: var(--k4u-subcat-bg, #fff);
  color: var(--k4u-subcat-text, #242626);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease,
    color 160ms ease, transform 160ms ease;
}

.k4u-category-filter__option:hover {
  border-color: var(--k4u-subcat-border-hover, #d4d8d8);
  background: var(--k4u-subcat-bg-hover, #f7f7f7);
  color: var(--k4u-subcat-text, #242626);
  transform: translateY(-1px);
}

.k4u-category-filter__option.is-active {
  border-color: var(--k4u-subcat-accent, #168579);
  background: #e8f5f3;
  color: #1f3432;
  font-weight: 600;
}

.k4u-category-filter__option.is-active::before {
  position: absolute;
  top: 50%;
  left: 10px;
  color: var(--k4u-subcat-accent, #168579);
  content: "\2713";
  font-size: 0.9em;
  font-weight: 700;
  line-height: 1;
  transform: translateY(-50%);
}

/* "Vše" používá aktivní barvu, ale není prezentováno jako aktivní filtr. */
.k4u-category-filter__option.is-active[data-filter-value=""]::before {
  content: none;
}

.k4u-category-filter__option.is-active:hover {
  border-color: var(--k4u-subcat-accent, #168579);
  background: #deefed;
  color: #1f3432;
}

.k4u-category-filter__option.is-unavailable,
.k4u-category-filter__option:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.k4u-category-filter__option:focus-visible,
.k4u-category-filter__clear:focus-visible {
  outline: 2px solid var(--k4u-subcat-accent, #168579);
  outline-offset: 3px;
}

.k4u-category-filter__step {
  display: inline-block;
  flex: 0 0 auto;
  margin-right: 5px;
  font-weight: 700;
}

.k4u-category-filter__clear {
  display: inline-block;
  margin: 9px 0 0;
  padding: 2px 0;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--k4u-subcat-muted, #555);
  font: inherit;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.k4u-category-filter__clear:hover {
  color: var(--k4u-subcat-accent, #168579);
}

.k4u-category-filter__clear[hidden] {
  display: none !important;
}

@media (max-width: 767px) {
  .k4u-category-filter {
    margin-bottom: 18px;
    padding: 12px;
  }

  .k4u-category-filter__header {
    margin-bottom: 10px;
  }

  .k4u-category-filter__header h2 {
    font-size: 19px;
  }

  .k4u-category-filter__options {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .k4u-category-filter__option {
    width: 100%;
    padding-right: 12px;
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .k4u-category-filter__option {
    transition: none;
  }

  .k4u-category-filter__option:hover {
    transform: none;
  }
}