.cat-nav-container {
        background: var(--bg-island);
        box-shadow: 0 4px 20px rgba(0,0,0,0.04);
        border-radius: 9999px;
        height: 56px;
        display: flex; align-items: center; justify-content: center;
        position: relative; overflow: hidden;
        transition: all 0.3s ease;
        margin: 0 auto;
        width: 100%; max-width: 550px; /* 고정 너비 */
    }
    
    .cat-scroll-area {
        display: flex; align-items: center; gap: 8px;
        padding: 0 10px;
        width: 100%; height: 100%;
        overflow-x: auto; white-space: nowrap;
        opacity: 1; transition: opacity 0.2s;
    }
    .cat-nav-container.search-mode .cat-scroll-area { display: none; }

    .search-input-area {
        display: none; width: 100%; height: 100%;
        align-items: center; padding: 0 20px;
    }
    .cat-nav-container.search-mode .search-input-area { display: flex; animation: fadeIn 0.3s ease; }

    .cat-icon-btn {
        width: 42px; height: 42px; font-size: 1.25rem;
        border-radius: 50%; flex-shrink: 0;
        color: var(--text-dim, #6b7280); background: transparent;
        display: flex; align-items: center; justify-content: center;
        transition: all 0.2s;
    }
    .cat-icon-btn:hover { background-color: rgba(127,127,127, 0.1); color: var(--text-main, #111); }
    .cat-icon-btn.active {
        background-color: var(--text-main, #111);
        color: var(--bg-main, #fff);
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }

    /* [Modal & Form] */
    .modal-box { 
        background-color: var(--bg-island, #ffffff); 
        color: var(--text-main, #111); 
        box-shadow: 0 25px 60px rgba(0,0,0,0.3);
    }
    .input-field { 
        background-color: var(--bg-main, #f3f4f6); 
        color: var(--text-main, #111); 
        border: 1px solid transparent; 
    }
    body.theme-dark .input-field { border-color: rgba(255,255,255,0.05) !important; }

    .cat-opt {
        min-width: 60px; flex-shrink: 0;
        display: flex; flex-direction: column; align-items: center;
        padding: 8px; border-radius: 12px; cursor: pointer; transition: all 0.2s;
    }
    .cat-opt.selected { background: var(--text-main, #111); color: var(--bg-main, #fff); }

    .txt-primary { color: var(--text-main, #111); }
    .txt-sub { color: var(--text-dim, #6b7280); }
    
    .custom-scrollbar::-webkit-scrollbar { height: 4px; }
    .custom-scrollbar::-webkit-scrollbar-track { background: transparent; }
    .custom-scrollbar::-webkit-scrollbar-thumb { background-color: rgba(0, 0, 0, 0.2); border-radius: 10px; }
    body.theme-dark .custom-scrollbar::-webkit-scrollbar-thumb { background-color: rgba(255, 255, 255, 0.2); }
    .no-scrollbar::-webkit-scrollbar { display: none; }

    .loading-sentinel { height: 20px; width: 100%; display: flex; justify-content: center; padding: 20px; }
    .loading-sentinel.active::after { content: ''; width: 24px; height: 24px; border: 2px solid var(--text-dim); border-top-color: transparent; border-radius: 50%; animation: spin 1s linear infinite; }
    @keyframes spin { to { transform: rotate(360deg); } }
    @keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }