* { box-sizing: border-box; }

body {
    margin: 0;
    background: white;
    color: black;
    font-family: Arial, Helvetica, sans-serif;
}

header { padding-top: 36px; }

.main-nav {
    width: 90%;
    max-width: 1180px;
    margin: 0 auto;
    min-height: 70px;
    padding: 0 25px;
    background: #777;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 12px 18px;
    color: black;
    text-decoration: none;
    font-size: 17px;
}

.nav-link:hover { background: #888; }
.nav-link.active { font-weight: bold; }

.nav-link.active::before {
    content: "";
    position: absolute;
    width: 6px;
    height: 6px;
    background: black;
    left: 5px;
    top: 50%;
    transform: translateY(-50%);
}

main {
    width: 90%;
    max-width: 1180px;
    margin: 0 auto;
}

.home {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 520px;
}

.home-books {
    padding-top: 22px;
    text-align: center;
}

.home-books h1 {
    margin: 0 0 18px 0;
    padding-left: 45px;
    font-size: 48px;
    font-weight: 600;
    text-align: left;
}

.home-book-cover {
    display: block;
    width: 157px;
    height: auto;
    margin: 0 auto;
}

.home-books p {
    font-size: 20px;
    margin-top: 18px;
}

.publisher-mark {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding-bottom: 30px;
}

.publisher-logo {
    width: 390px;
    max-width: 100%;
    height: auto;
}

.publisher-mark h2 {
    margin: 10px 0 0 0;
    font-size: 40px;
    font-weight: 600;
}

.page-layout {
    display: flex;
    gap: 60px;
    padding: 25px 20px 60px;
}

.books-page, .authors-page { flex: 1; }

.book-entry {
    display: flex;
    gap: 18px;
    margin-bottom: 58px;
    max-width: 800px;
}

.book-entry > img {
    width: 75px;
    height: auto;
    align-self: flex-start;
}

.book-entry h1, .author h1 {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 500;
}

.book-entry h1 span, .author h1 span {
    margin-left: 5px;
    font-size: 12px;
    font-weight: normal;
}

.book-entry p, .author-books p {
    font-size: 12px;
    margin: 5px 0;
}

.page-logo {
    width: 30%;
    padding-top: 20px;
}

.page-logo img {
    width: 100%;
    max-width: 300px;
    height: auto;
}

.author { margin-bottom: 35px; }

.author-books {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.author-books img {
    width: 62px;
    height: auto;
}

.author-books p { width: 90px; }

.about-layout {
    display: grid;
    grid-template-columns: 60% 40%;
    min-height: 500px;
    padding-top: 25px;
}

.about-text {
    padding: 0 35px;
    font-size: 16px;
    line-height: 1.05;
}

.about-text p { margin-bottom: 28px; }

.about-logo {
    padding-top: 5px;
    text-align: center;
}

.about-logo img {
    width: 90%;
    max-width: 390px;
    height: auto;
}

.submissions-layout {
    display: flex;
    gap: 60px;
    padding: 25px 20px 60px;
}

.submissions-layout section { flex: 1; }

.submissions-layout h1 {
    margin: 10px 0;
    font-size: 16px;
    font-weight: normal;
}

.submissions-layout p {
    max-width: 400px;
    font-size: 12px;
}

footer {
    min-height: 30px;
    border-top: 1px solid #ddd;
}

@media (max-width: 700px) {
    header { padding-top: 15px; }

    .main-nav {
        width: 100%;
        min-height: auto;
        padding: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-link {
        padding: 8px 10px;
        font-size: 15px;
    }

    main { width: 94%; }

    .home {
        display: block;
        min-height: 0;
    }

    .home-books h1 {
        padding-left: 0;
        text-align: center;
        font-size: 38px;
    }

    .publisher-mark {
        align-items: center;
        margin-top: 45px;
        padding-bottom: 30px;
        text-align: center;
    }

    .publisher-mark h2 {
        font-size: 30px;
        text-align: center;
    }

    .page-layout, .about-layout, .submissions-layout {
        display: block;
        padding-left: 10px;
        padding-right: 10px;
    }

    .page-logo, .about-logo {
        width: 100%;
        margin-top: 35px;
        text-align: center;
    }

    .author-books {
        gap: 20px;
        flex-wrap: wrap;
    }

    .about-text { padding: 0; }
}