/* ============================================
   LAYOUT & CONTAINERS
   ============================================ */

.main-container {
    position: relative;
    background: var(--bg-dark);
    min-height: 100vh;
}

.grain-overlay {
    will-change: transform;
    transform: translateZ(0);
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 50;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    mix-blend-mode: overlay;
}