/* Shared category/source filter strip used by the index and race pages. */

.category-strip-wrap {
  background: linear-gradient(to bottom, var(--bg-base) 0%, var(--bg-base) 100%);
  margin-bottom: var(--category-strip-margin-bottom, clamp(18px, 2.1vw, 32px));
  padding:
    var(--category-strip-padding-top, 28px)
    var(--category-strip-padding-inline, 20px)
    var(--category-strip-padding-bottom, 0);
}

@media (max-width: 700px) {
  .category-strip-wrap {
    --category-strip-margin-bottom: 16px;
  }
}

.category-strip {
  --category-strip-gap: clamp(24px, 4vw, 64px);
  --category-btn-gap: 12px;
  --category-btn-hover-transform: translateY(-3px);
  --category-icon-size: 96px;
  --category-icon-border-width: 2px;
  --category-icon-img-size: 72%;
  --category-icon-img-filter: brightness(0.75) saturate(0.8);
  --category-icon-img-hover-transform: scale(1.1);
  --category-icon-img-hover-filter: brightness(1) saturate(1);
  --category-icon-img-active-filter: brightness(1.15) saturate(1.1);
  --category-name-font-size: 0.7rem;
  --category-name-letter-spacing: 0.14em;
  --category-name-line-height: 1.3;
  --category-name-max-width: 100px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--category-strip-gap);
  flex-wrap: wrap;
}

.cat-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--category-btn-gap);
  cursor: pointer;
  background: transparent;
  box-shadow: none;
  border: none;
  padding: 0;
  text-decoration: none;
  transition: transform 0.2s;
}

.cat-btn:hover {
  transform: var(--category-btn-hover-transform);
}

.cat-btn__icon {
  width: var(--category-icon-size);
  height: var(--category-icon-size);
  border-radius: 50%;
  border: var(--category-icon-border-width) solid var(--border);
  background: var(--control-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  position: relative;
}

.cat-btn__icon img {
  width: var(--category-icon-img-size);
  height: var(--category-icon-img-size);
  object-fit: contain;
  transition: transform 0.3s ease, filter 0.2s;
  filter: var(--category-icon-img-filter);
}

.cat-btn:hover .cat-btn__icon {
  border-color: var(--gold);
  background: var(--control-surface-hover);
}

.cat-btn:hover .cat-btn__icon img {
  transform: var(--category-icon-img-hover-transform);
  filter: var(--category-icon-img-hover-filter);
}

.cat-btn.is-active .cat-btn__icon {
  border-color: var(--control-border-active);
  box-shadow: var(--control-shadow-active);
  background: var(--control-surface-active);
}

.cat-btn.is-active .cat-btn__icon img {
  filter: var(--category-icon-img-active-filter);
}

.cat-btn__name {
  font-family: var(--font-heading);
  font-size: var(--category-name-font-size);
  font-weight: 700;
  letter-spacing: var(--category-name-letter-spacing);
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  transition: color 0.2s;
  line-height: var(--category-name-line-height);
  max-width: var(--category-name-max-width);
}

.cat-btn:hover .cat-btn__name {
  color: var(--gold);
}

.cat-btn.is-active .cat-btn__name {
  color: var(--gold-light);
}