.catalog-categories-hero { padding: 1rem 0 1.6rem; border-bottom: 1px solid var(--otodark-border); background: var(--otodark-bg-subtle); }
.catalog-categories-breadcrumb { display: flex; flex-wrap: wrap; gap: .55rem; margin: 0; padding: .25rem 0 1rem; color: var(--otodark-text-muted); font-size: .8rem; list-style: none; }
.catalog-categories-breadcrumb li + li::before { margin-right: .55rem; color: var(--otodark-text-muted); content: '/'; }
.catalog-categories-breadcrumb a { color: var(--otodark-text-muted); }
.catalog-categories-breadcrumb a:hover { color: var(--otodark-primary); text-decoration: none; }
.catalog-categories-hero-copy > span { display: inline-flex; align-items: center; gap: .5rem; margin-bottom: .35rem; color: var(--otodark-primary); font-size: .7rem; font-weight: 700; letter-spacing: .08em; }
.catalog-categories-hero-copy h1 { margin: 0; color: var(--otodark-text-main); font-size: clamp(1.7rem, 3vw, 2.25rem); font-weight: 750; }
.catalog-categories-hero-copy p { margin: .4rem 0 0; color: var(--otodark-text-muted); font-size: .92rem; }
.catalog-categories-page { padding: 2rem 0 4rem; background: var(--otodark-bg-body); }
.catalog-categories-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.catalog-categories-heading h2 { margin: 0; color: var(--otodark-text-main); font-size: 1.15rem; font-weight: 700; }
.catalog-categories-heading p { margin: .2rem 0 0; color: var(--otodark-text-muted); font-size: .88rem; }
.catalog-categories-all { display: inline-flex; flex: 0 0 auto; align-items: center; gap: .6rem; padding: .65rem .85rem; border: 1px solid var(--otodark-border); border-radius: var(--otodark-radius-sm); background: var(--otodark-bg-card); color: var(--otodark-text-main); font-size: .84rem; font-weight: 650; transition: border-color .15s ease, color .15s ease, background .15s ease; }
.catalog-categories-all:hover, .catalog-categories-all:focus { border-color: var(--otodark-primary); background: var(--otodark-bg-subtle); color: var(--otodark-primary); text-decoration: none; }
.catalog-category-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; align-items: start; }
.catalog-category-card { min-width: 0; overflow: hidden; border: 1px solid var(--otodark-border); border-radius: var(--otodark-radius-md); background: var(--otodark-bg-card); }
.catalog-category-card-header { display: flex; align-items: center; gap: .75rem; padding: .9rem 1rem; }
.catalog-category-icon { display: grid; flex: 0 0 2.25rem; width: 2.25rem; height: 2.25rem; place-items: center; border: 1px solid var(--otodark-border); border-radius: var(--otodark-radius-sm); color: var(--otodark-primary); font-size: .9rem; }
.catalog-category-title { min-width: 0; flex: 1; }
.catalog-category-title h3 { overflow: hidden; margin: 0; color: var(--otodark-text-main); font-size: 1rem; font-weight: 700; line-height: 1.35; text-overflow: ellipsis; }
.catalog-category-title h3 a { color: inherit; }
.catalog-category-title h3 a:hover { color: var(--otodark-primary); text-decoration: none; }
.catalog-category-title > span { display: block; margin-top: .15rem; color: var(--otodark-text-muted); font-size: .77rem; }
.catalog-category-open { display: grid; flex: 0 0 2rem; width: 2rem; height: 2rem; place-items: center; border-radius: var(--otodark-radius-sm); color: var(--otodark-text-muted); }
.catalog-category-open:hover, .catalog-category-open:focus-visible { background: var(--otodark-bg-subtle); color: var(--otodark-primary); text-decoration: none; }
.catalog-category-card-content { padding: 0 .85rem .65rem; }
.catalog-category-tree { margin: 0; padding: 0; list-style: none; }
.catalog-category-node + .catalog-category-node { border-top: 1px solid var(--otodark-border); }
.catalog-category-entry { display: flex; align-items: center; gap: .3rem; min-height: 2.6rem; }
.catalog-category-link { display: flex; min-width: 0; flex: 1; align-items: center; gap: .6rem; padding: .55rem .3rem; color: var(--otodark-text-main); font-size: .88rem; font-weight: 550; }
.catalog-category-link > i { flex: 0 0 .9rem; color: var(--otodark-text-muted); font-size: .76rem; text-align: center; }
.catalog-category-link:hover, .catalog-category-link:focus-visible { color: var(--otodark-primary); text-decoration: none; }
.catalog-category-link:hover > i, .catalog-category-link:focus-visible > i { color: var(--otodark-primary); }
.catalog-category-branch { flex: 0 0 auto; }
.catalog-category-branch summary { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: var(--otodark-radius-sm); color: var(--otodark-text-muted); cursor: pointer; list-style: none; }
.catalog-category-branch summary::-webkit-details-marker { display: none; }
.catalog-category-branch summary:hover, .catalog-category-branch summary:focus-visible { background: var(--otodark-bg-subtle); color: var(--otodark-primary); outline: none; }
.catalog-category-branch[open] > summary { color: var(--otodark-primary); transform: rotate(180deg); }
.catalog-category-tree-nested { margin: 0 0 .45rem .45rem; padding-left: .7rem; border-left: 1px solid var(--otodark-border); }
.catalog-category-tree-nested .catalog-category-link { font-size: .83rem; font-weight: 500; }
.catalog-category-tree-nested .catalog-category-tree-nested .catalog-category-link { color: var(--otodark-text-muted); font-size: .8rem; }
.catalog-category-empty-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .1rem 1rem .9rem; color: var(--otodark-text-muted); font-size: .84rem; font-weight: 600; }
.catalog-category-empty-link:hover { color: var(--otodark-primary); text-decoration: none; }
.catalog-category-empty { display: flex; min-height: 16rem; flex-direction: column; align-items: center; justify-content: center; padding: 2rem 1rem; border: 1px dashed var(--otodark-border); border-radius: var(--otodark-radius-md); background: var(--otodark-bg-card); text-align: center; }
.catalog-category-empty-icon { display: grid; width: 3rem; height: 3rem; margin-bottom: .8rem; place-items: center; border: 1px solid var(--otodark-border); border-radius: 50%; color: var(--otodark-primary); }
.catalog-category-empty h2 { margin: 0; color: var(--otodark-text-main); font-size: 1.1rem; font-weight: 700; }
.catalog-category-empty p { margin: .4rem 0 1rem; color: var(--otodark-text-muted); }
@media (max-width: 767.98px) {
  .catalog-categories-hero { padding: .65rem 0 1.1rem; }
  .catalog-categories-breadcrumb { padding-bottom: .75rem; font-size: .75rem; }
  .catalog-categories-hero-copy h1 { font-size: 1.65rem; }
  .catalog-categories-hero-copy p { font-size: .86rem; }
  .catalog-categories-page { padding: 1.25rem 0 2.5rem; }
  .catalog-categories-heading { align-items: flex-start; margin-bottom: .8rem; }
  .catalog-categories-heading p { font-size: .8rem; }
  .catalog-categories-all { padding: .55rem .65rem; font-size: .78rem; }
  .catalog-category-grid { grid-template-columns: minmax(0, 1fr); gap: .55rem; }
  .catalog-category-card-header { gap: .65rem; padding: .75rem .8rem; }
  .catalog-category-icon { flex-basis: 2rem; width: 2rem; height: 2rem; }
  .catalog-category-card-content { padding: 0 .7rem .45rem; }
  .catalog-category-empty-link { padding: 0 .8rem .75rem; }
}
@media (prefers-reduced-motion: reduce) { .catalog-categories-all, .catalog-category-link, .catalog-category-branch summary { transition: none; } }