ranslateY(-2px);
        }

        .control-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .slide-counter {
            color: white;
            font-size: 18px;
            font-weight: bold;
            padding: 0 15px;
            background: rgba(255,255,255,0.1);
            border-radius: 20px;
            padding: 8px 16px;
        }

        .presentation-header {
            position: fixed;
            top: 20px;
            left: 50%;
            tr