.books{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto;
    grid-gap: 0.1rem;
    /* gap: 1.5rem; */
}

.book{
    cursor: pointer;
    box-shadow: 5px 5px 20px black;
    overflow: hidden;
    position: relative;
}

.book:hover .book-data{
    opacity: 1;
}

.book:hover{
    transform: translateY(-1px);
}

.book-title{
    display: inline;
}

.book-img{
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    display: block;
}

.book-data{
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.75);
    color: var(--text);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-rating{
    /* display: inline-block; */
}

/* ── Hidden utility ── */
.hidden{
    display: none !important;
}

/* ── Book detail view ── */
.book-detail{
    display: none;
    /* border: 2px solid var(--clr-header); */
}

.book-detail.open{
    display: block;
    animation: fadeIn 0.25s ease;
}



.detail-close{
    color: var(--utilites);
    font-family: inherit;
    font-size: var(--size-sm);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    display: inline;
}

.detail-close:hover{
    text-decoration: underline;
}

.detail-title{
    font-size: var(--size-3xl);
    margin-bottom: 0.25rem;
    /* border: 2px solid var(--clr-header); */
}

.detail-author{
    color: var(--utilites);
    font-size: var(--size-sm);
}

.detail-meta{
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: var(--size-xs);
}

.detail-tag{
    background-color: var(--clr-header);
    color: var(--dark);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
}

.detail-date,
.detail-time{
    color: var(--utilites);
}

.detail-rating{
    margin-bottom: 1.5rem;
    font-size: var(--size-lg);
    color: var(--clr-light);
}

.detail-review{
    line-height: 1.8;
    font-size: var(--size-sm);
    color: var(--text);
    max-width: 65ch;
}