body {
    background-color: #000000;
    color: #ffffff;
}

::selection {
    background-color: #ffffff;
    color: #000000;
}

/* Subtle Background Grid with Fade Mask */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 1;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    mask-image: radial-gradient(circle at top center, black 20%, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at top center, black 20%, transparent 80%);
    pointer-events: none;
}

/* Buttons */
.btn-primary {
    background-color: #ffffff;
    color: #000000;
    transition: all 0.5s ease;
}

.btn-primary:hover {
    background-color: #d4d4d8;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #ffffff;
    transition: all 0.5s ease;
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.05);
}