/* Shared foundation for the homepage and the standalone 404 page. */
body {
    background-color: #030000;
    color: #dddddd;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

.logo-img,
.footer-logo-img {
    height: 40px;
    width: auto;
    display: block;
}

/* Emphasize the same digit in the memory prompt and the permanent address. */
.domain-digit {
    color: #ff3333;
    -webkit-text-fill-color: currentColor;
    font-weight: 900;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    padding: 16px 20px;
    text-decoration: none;
    border-radius: 10px;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: skewX(-25deg);
}

.cta-btn:hover::before {
    left: 170%;
    transition: left 0.6s ease-in-out;
}

.cta-main {
    background: linear-gradient(135deg, #ff3333 0%, #990000 100%);
    color: #ffffff;
    border: 1px solid #ff6666;
    box-shadow: 0 4px 20px rgba(255, 51, 51, 0.3);
}

.cta-main:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 30px rgba(255, 51, 51, 0.6), 0 0 20px rgba(255, 51, 51, 0.4);
}