@import 'reset.css';

:root {
    font-family: ui-sans-serif, system-ui, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
    line-height: 150%;
    color: #57534e;
}

.books {
    background-image: url('../img/books-background.jpg');
    background-size: 41.875rem 31.5625rem; /* 670px 505px */
    text-align: center;
}

.books__shelf {
    position: relative;
    display: grid;
    min-height: 100vh;
    grid-template-columns: repeat(2, 7.5rem); /* 120px */
    padding: 2.5rem 1.75rem; /* 40px 28px */
    margin: 0 auto;
    width: max-content;
    gap: 2rem 1.25rem; /* 32px 20px */
    align-items: end;
    overflow: hidden;
}

.books__shelf::before,
.books__shelf::after {
    content: "";
    position: absolute;
    z-index: 2;
    top: 0;
    width: 1000vh;
    height: 1.25rem; /* 20px */
    background-image: url('../img/bookshelf.jpg');
    background-size: 1.25rem 1.25rem; /* 20px */
    box-shadow: 0 -0.125rem 0.125rem -0.0625rem rgba(255, 255, 255, 0.5) inset,
        0 -0.5rem 2rem -0.25rem rgba(0, 0, 0, 0.35);
}

.books__shelf::before {
    left: 1.25rem; /* 20px */
    transform: rotate(90deg);
    transform-origin: top left;
}

.books__shelf::after {
    right: 1.25rem; /* 20px */
    transform: rotate(-90deg);
    transform-origin: top right;
}

.book {
    position: relative;
    padding-bottom: 1.25rem; /* 20px */
}

.book::before {
    content: "";
    position: absolute;
    inset: 0;
    bottom: 1.25rem; /* 20px */
    opacity: 0.15;
    mix-blend-mode: multiply;
    background: linear-gradient(
        to right,
        rgba(225, 255, 255, 1) 0%,
        rgba(225, 255, 255, 1) 1%,
        rgba(225, 255, 255, 0.2) 2%,
        rgba(0, 0, 0, 0.8) 3%,
        rgba(0, 0, 0, 0.8) 4%,
        rgba(225, 255, 255, 0.2) 5%,
        rgba(225, 255, 255, 0) 6%,
        rgba(225, 255, 255, 0) 100%
    );
    border-radius: .5rem; /* 8px */
}

.book::after {
    position: absolute;
    bottom: 0;
    left: -0.625rem; /* 10px */
    right: -100vw;
    height: 1.25rem; /* 20px */
    background-image: url('../img/bookshelf.jpg');
    background-size: 1.25rem 1.25rem;
    box-shadow: 0 0.125rem 0.125rem -0.0625rem rgba(255, 255, 255, 0.6) inset,
        0 0.5rem 2rem -0.25rem rgba(0, 0, 0, 0.75);
    z-index: 1;
}

.book:nth-child(2n+1):after {
    content: "";
}

.books__title,
.book__title {
    position: absolute;
    width: 0.0625rem;
    height: 0.0625rem;
    padding: 0;
    margin: -0.0625rem;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.book__fig::before {
    content: "";
    position: absolute;
    inset: 0;
    bottom: 1.25rem; /* 20px */
    box-shadow: -0.125rem 0.125rem 0.1875rem -0.0625rem rgba(255, 255, 255, 0.25) inset,
        0.125rem -0.125rem 0.1875rem -0.0625rem rgba(0, 0, 0, 0.25) inset;
    border-radius: .5rem; /* 8px */
}

.book__img {
    max-width: 100%;
    display: block;
    box-shadow: -0.125rem 0.125rem 0.1875rem -0.0625rem rgba(0, 0, 0, 0.25);
    border-radius: .5rem; /* 8px */
}

/* MEDIA QUERIES */

@media screen and (min-width: 28.75rem) { /* 460px */
    .books__shelf {
        grid-template-columns: repeat(3, 7.5rem);
    }

    .book:nth-child(2n+1)::after {
        content: unset;
    }

    .book:nth-child(3n+1)::after {
        content: "";
    }
}

@media screen and (min-width: 32.5rem) { /* 520px */
    .books__shelf {
        grid-template-columns: repeat(3, 8.75rem); /* 140px */
    }
}

@media screen and (min-width: 45rem) { /* 720px */
    .books__shelf {
        grid-template-columns: repeat(4, 8.75rem);
    }

    .book:nth-child(3n+1)::after {
        content: unset;
    }

    .book:nth-child(4n+1)::after {
        content: "";
    }
}

@media screen and (min-width: 53.75rem) { /* 860px */
    .books__shelf {
        grid-template-columns: repeat(5, 8.75rem);
    }

    .book:nth-child(4n+1)::after {
        content: unset;
    }

    .book:nth-child(5n+1)::after {
        content: "";
    }
}

@media screen and (min-width: 61.25rem) { /* 980px */
    .books__shelf {
        grid-template-columns: repeat(4, 12.5rem); /* 200px */
        padding: 4rem 3rem; /* 64px 48px */
        gap: 4rem 1.25rem; /* 64px 20px */
    }

    .books__shelf::before,
    .books__shelf::after {
        height: 1.75rem; /* 28px */
    }

    .books__shelf::before { 
        left: 1.75rem; 
    }

    .books__shelf::after {
        right: 1.75rem; 
    }

    .book {
        padding-bottom: 1.75rem; /* 28px */
    }

    .book__fig::before {
        bottom: 1.75rem;
    }

    .book::before {
        opacity: 0.1; 
        bottom: 1.75rem;
    }

    .book:nth-child(5n+1)::after {
        content: unset; 
    }

    .book:nth-child(4n+1)::after {
        content: "";
        left: -1.25rem; /* 20px */
        height: 1.75rem; /* 28px */
    }
}

@media screen and (min-width: 75rem) { /* 1200px */
    .books__shelf {
        grid-template-columns: repeat(5, 12.5rem); /* 200px */
    }

    .book:nth-child(4n+1)::after {
        content: unset; 
    }

    .book:nth-child(5n+1)::after {
        content: "";
        left: -1.25rem; /* 20px */
        height: 1.75rem; /* 28px */
    }
}