@charset "UTF-8";

:root{
    --grid-min-gap: 5px;
    --card-width: 200px;
    --card-width-max: 320px;
    --phone-card-with: 150px;
    --card-aspect-ratio:1.1;
    --card-margin-top: 10px;
    --card-title-height: 30px;

}

/* 静的ギャラリー */
.gallery { 
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: var(--grid-min-gap);
    margin: 0 auto;
    width: 90%;
}
.gallery-card { 
    width: var(--card-width);
    height: calc(var(--card-width) * var(--card-aspect-ratio));
    background:var(--base-color); 
    border-radius:10px; 
    box-shadow:0 2px 6px rgba(0,0,0,0.15); 
    cursor:pointer; 
    transition: transform 0.2s;
    margin:var(--card-margin-top) auto calc(var(--card-margin-top) + var(--card-title-height));

    padding: 0;
}
.gallery-card:hover { transform:scale(1.03); }
.gallery-card img{ 
    width:100%; 
    height:100%;
    object-fit:cover; 
    border-radius:10px; 
}
.gallery-card .gallery-title{ 
    display: none;
    position: relative;
    height: var(--card-title-height);
    width: 90%;
    bottom: calc(var(--card-title-height) + var(--card-title-height) / 2);
    font-weight:bold; 
    font-size:1.1em; 
    padding:0px;
    text-align: center;
    color: rgba(0,0,0,0);

    margin: 0 auto;

    border-color: var(--text-color);
    border-width:0px;
    border-style: solid;
    border-radius:3px; 
    background-color: rgba(0,0,0,0); 

}

.gallery-card:hover .gallery-title{
    display: block;
}

/* モバイル画面表示 */
@media (max-width: 480px) {
    .gallery-card {
        width: 42vw;
        height: calc(45vw * var(--card-aspect-ratio));
    }
    .gallery { 
        width: 100%;
        margin: 0;
        grid-template-columns: 1fr 1fr;
    }
    .gallery-card:hover { transform:scale(1); }
}



@media (min-width: 1200px) {
    .gallery { 
        grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    }
}

@media (max-width: 960px) {
    .gallery { 
        grid-template-columns: 1fr 1fr 1fr;
    }
}

@media (max-width: 720px) {
    .gallery { 
        grid-template-columns: 1fr 1fr;
    }
}


/* 大画面表示 */
@media (min-width: 1500px) {
    .gallery { 
        width: 98%;
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }
    .gallery-card { 
    width: var(--card-width-max);
    height: calc(var(--card-width-max) * var(--card-aspect-ratio));
    }
}   

/* 全画面表示 */
@media (min-width: 1900px) {
    .gallery { 
        grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    }
}