.tab-content {
            display: none;
        }
        .tab-content.active {
            display: block;
        }
        .color-option {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            cursor: pointer;
            display: inline-block;
            margin: 0 4px;
            border: 2px solid transparent;
        }
        .color-option.selected {
            border-color: #000;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .notification {
            animation: fadeIn 0.3s ease-out;
        }