:root{--bg-dark: #1a1c1e;--bg-light: #fdfcff}body.dark-mode{background-color:var(--bg-dark);color:#e2e2e6}body.light-mode{background-color:var(--bg-light);color:#1a1c1e}.app{min-height:100vh;display:flex;flex-direction:column;background-attachment:fixed;transition:background-color .3s ease}.app:before{content:"";position:fixed;inset:0;opacity:.02;pointer-events:none;background-image:url(https://grainy-gradients.vercel.app/noise.svg);z-index:1}.main-content{flex:1;z-index:2}