body {
    margin: 0;
    font-family: 'Nunito', sans-serif;
    background: #fafafa;
    color: #333;
    line-height: 1.6;
}

/* HEADER LAYOUT */
.site-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 25px;
    padding: 60px 20px 40px;
    text-align: left;
}

.site-logo {
    width: 140px; /* adjust as needed */
    height: auto;
}

.header-text h1 {
    font-size: 48px;
    font-weight: 800;
    margin: 0;
}

.tagline {
    font-size: 20px;
    font-weight: 400;
    color: #666;
    margin-top: 10px;
}

/* MOBILE RESPONSIVE */
@media (max-width: 600px) {
    .site-header {
        flex-direction: column;
        text-align: center;
    }

    .site-logo {
        width: 180px;
    }
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.intro {
    text-align: center;
    font-size: 20px;
    margin-bottom: 60px;
}

.book h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    text-align: center;
}

.description {
    text-align: center;
    font-size: 18px;
    color: #555;
    margin-bottom: 30px;
}

.placeholder-cover {
    width: 300px;
    height: 400px;
    border: 3px dashed #bbb;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 18px;
    border-radius: 8px;
    background: #fff;
}

footer {
    text-align: center;
    padding: 40px 20px;
    font-size: 14px;
    color: #777;
}