/* Category index (/category/) */
.category-index-header { margin-bottom: 1.25rem; }
.category-index-intro { color: var(--muted, #64748b); max-width: 42rem; margin: .35rem 0 .5rem; }
.category-result-count { font-size: .9rem; color: var(--muted, #64748b); margin: 0; }

.category-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem 1rem;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}
.category-search {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    align-items: center;
    flex: 1;
    min-width: 14rem;
    margin-bottom: 0;
}
.category-search input[type="search"] {
    flex: 1;
    min-width: 12rem;
    padding: .65rem .85rem;
    border: 1px solid var(--line, #cbd5e1);
    border-radius: 8px;
    font-size: 1rem;
    background: transparent;
    color: inherit;
}

.category-type-filter {
    display: inline-flex;
    flex-wrap: wrap;
    border: 1px solid var(--line, #e2e8f0);
    border-radius: 8px;
    overflow: hidden;
    background: var(--panel, var(--paper, #fff));
}
.category-type-btn {
    padding: .45rem .85rem;
    font-size: .875rem;
    font-weight: 600;
    color: var(--muted, #64748b);
    text-decoration: none;
    border-right: 1px solid var(--line, #e2e8f0);
}
.category-type-btn:last-child { border-right: none; }
.category-type-btn:hover { color: var(--text, #0f172a); text-decoration: none; background: rgba(0,0,0,.03); }
.category-type-btn.is-active {
    background: #2563eb;
    color: #fff;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}
.category-empty {
    color: var(--muted, #64748b);
    padding: 1rem 0;
    grid-column: 1 / -1;
}
.category-card {
    display: flex;
    flex-direction: column;
    gap: .45rem;
    padding: 1.15rem 1.2rem;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text, var(--ink, #0f172a));
    background: var(--panel, var(--paper, #fff));
    border: 1px solid var(--line, var(--hair, #e2e8f0));
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
    transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.category-card:hover {
    text-decoration: none;
    border-color: #93c5fd;
    box-shadow: 0 6px 18px rgba(37, 99, 235, .12);
    transform: translateY(-2px);
}
.category-card-type {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: #2563eb;
}
.category-card-title {
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.3;
}
.category-card-desc {
    margin: 0;
    font-size: .9rem;
    color: var(--muted, #64748b);
    line-height: 1.45;
    flex: 1;
}
.category-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1rem;
    margin: .35rem 0 0;
    font-size: .8rem;
    color: var(--muted, #64748b);
}

.category-pagination { margin-top: 1.5rem; }

@media (max-width: 900px) {
    .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
    .category-grid { grid-template-columns: 1fr; }
    .category-toolbar { align-items: stretch; }
    .category-type-filter { align-self: flex-start; }
}