.dark ::-webkit-scrollbar-thumb { background: #1e1f22; border: 1px solid #3f4147; }
.dark ::-webkit-scrollbar-thumb:hover { background: #4b5563; }

.dark .checkerboard {
    background-color: #1a1b1e;
    background-image: 
        linear-gradient(45deg, #232428 25%, transparent 25%), 
        linear-gradient(-45deg, #232428 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #232428 75%), 
        linear-gradient(-45deg, transparent 75%, #232428 75%);
}