/* ------------------------------------------------------------------ *
 * Homepage-specific styles
 * Grid sits flush against the fixed header.
 * ------------------------------------------------------------------ */

.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    margin-top: var(--header-h);
    height: calc(100vh - var(--header-h));
    min-height: 480px;
}

.grid-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}
.grid-item a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
}
.grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    display: block;
}
.grid-item:hover img,
.grid-item a:focus-visible img {
    transform: scale(1.10);
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    box-shadow: inset 0 0 100px 40px rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}
.grid-item:hover .grid-overlay,
.grid-item a:focus-visible .grid-overlay {
    background: rgba(0, 0, 0, 0.2);
}

.grid-text {
    color: #fff;
    font-size: 18px;
    letter-spacing: 4px;
    text-transform: uppercase;
    font-weight: 400;
    text-align: center;
}
.grid-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    font-weight: 200;
    letter-spacing: 1.5px;
    text-align: center;
    margin-top: 10px;
    transition: color 0.3s;
}
.grid-item:hover .grid-subtitle,
.grid-item a:focus-visible .grid-subtitle {
    color: rgba(255, 255, 255, 0.95);
}

.grid-item-large { grid-column: span 2; }

@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        grid-auto-rows: 50vh;
        height: auto;
        min-height: 0;
        margin-top: var(--header-h);
    }
    .grid-item-large { grid-column: span 1; }
}