.custom-filter-dropdown{position:relative;width:100%;max-width:300px}.dropdown-trigger{padding:12px 15px;background:#fff;border:1px solid #ddd;border-radius:4px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}.dropdown-trigger:hover{border-color:#999}.dropdown-menu{position:absolute;top:100%;left:0;width:100%;background:#fff;border:1px solid #ddd;border-top:none;border-radius:0 0 4px 4px;max-height:0;overflow:hidden;transition:max-height .3s ease;z-index:1000;box-shadow:0 4px 6px rgba(0,0,0,.1)}.custom-filter-dropdown.active .dropdown-menu{max-height:300px;overflow-y:auto}.dropdown-menu a{display:block;padding:10px 15px;color:#333;text-decoration:none;transition:background .2s}.dropdown-menu a:hover{background:#f5f5f5}.arrow{transition:transform .3s}.custom-filter-dropdown.active .arrow{transform:rotate(180deg)}