/* === PAGE GRID === */

/* --- PAGE GRID (base, always visible) --- */
.page-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle 1.5px at 0 0, rgba(255,255,255,0.08) 1.5px, transparent 1.5px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.05), rgba(255,255,255,0.05) 1px, transparent 1px, transparent 120px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.05), rgba(255,255,255,0.05) 1px, transparent 1px, transparent 120px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.02), rgba(255,255,255,0.02) 1px, transparent 1px, transparent 24px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.02) 1px, transparent 1px, transparent 24px);
    background-size: var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), 24px 24px, 24px 24px;
}

/* --- PAGE GRID GLOW (mouse-reactive brightness boost) --- */
.page-grid-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle 1.5px at 0 0, rgba(255,255,255,0.2) 1.5px, transparent 1.5px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.25), rgba(255,255,255,0.25) 1px, transparent 1px, transparent 120px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.25), rgba(255,255,255,0.25) 1px, transparent 1px, transparent 120px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.10), rgba(255,255,255,0.10) 1px, transparent 1px, transparent 24px),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.10), rgba(255,255,255,0.10) 1px, transparent 1px, transparent 24px);
    background-size: var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), var(--grid-heartbeat, 120px) var(--grid-heartbeat, 120px), 24px 24px, 24px 24px;
    -webkit-mask-image: radial-gradient(circle 300px at var(--mx, -9999px) var(--my, -9999px), rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    mask-image: radial-gradient(circle 300px at var(--mx, -9999px) var(--my, -9999px), rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    transition: opacity 0.4s var(--ease-quart);
}

body.hero-hovered .page-grid-glow {
    -webkit-mask-image: radial-gradient(circle 150px at var(--mx, -9999px) var(--my, -9999px), rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    mask-image: radial-gradient(circle 150px at var(--mx, -9999px) var(--my, -9999px), rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
}

@media not all and (hover: hover) {
    .page-grid-glow { display: none; }
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .page-grid, .page-grid-glow {
        background-image:
            radial-gradient(circle 1px at 0 0, rgba(255,255,255,0.06) 1px, transparent 1px),
            repeating-linear-gradient(0deg, rgba(255,255,255,0.05), rgba(255,255,255,0.05) 1px, transparent 1px, transparent 96px),
            repeating-linear-gradient(90deg, rgba(255,255,255,0.05), rgba(255,255,255,0.05) 1px, transparent 1px, transparent 96px);
        background-size: 96px 96px, 96px 96px, 96px 96px;
    }
}