/* 404 PAGE */
.error404-container {
    padding: 10rem 3rem 8rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.e404-dog-frame {
    width: 280px;
    height: 380px;
    margin: 0 auto 4rem;
    position: relative;
    padding: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
}

.e404-dog-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: sepia(0.3) contrast(1.1);
    transition: filter 0.5s ease;
}

.e404-dog-frame:hover .e404-dog-img {
    filter: sepia(0) contrast(1);
}

.e404-dog-frame::before {
    content: '';
    position: absolute;
    inset: -10px;
    border: 1px solid var(--border);
    opacity: 0.3;
    pointer-events: none;
}

.e404-header {
    position: relative;
    margin-bottom: 5rem;
}

.e404-title {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: clamp(8rem, 25vw, 15rem);
    font-weight: 900;
    line-height: .8;
    /* WCAG SC 1.4.3 exemption: this is pure decoration — the "404" numeral is a
       background motif; all user-facing content is in .e404-quote and .e404-suggest.
       Intentionally low-contrast to maintain the ghost watermark aesthetic. */
    color: var(--tag-border);
    margin: 0;
    user-select: none;
}

.e404-quote {
    font-family: 'IM Fell English', serif;
    font-size: 1.5rem;
    font-style: italic;
    color: var(--accent);
    margin-top: -2rem;
    position: relative;
    z-index: 2;
}

.e404-suggest {
    margin-top: 8rem;
}

.e404-slabel {
    font-size: .6rem;
    letter-spacing: .3em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.e404-slabel::before,
.e404-slabel::after {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--border);
}

.e404-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 992px) {
    .e404-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .error404-container {
        padding: 8rem 1.5rem 5rem;
    }

    .e404-dog-frame {
        width: 100%;
        max-width: 240px;
        height: 320px;
    }

    .e404-grid {
        grid-template-columns: 1fr;
    }
}