/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* GLOBAL */
body {
    font-family: 'Montserrat', sans-serif;
    background: #FFFFFF;
    color: #1A1A1A;
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ALTERNATING SECTION BACKGROUNDS */
.alt1 {
    background: #F7F7F7;
}

.alt2 {
    background: #FFFFFF;
}

/* HERO */
.hero {
    text-align: center;
    padding: 80px 24px 60px;
    background: #FFFFFF;
    border-bottom: 1px solid #E5E5E5;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
}

.tagline {
    font-size: 1.1rem;
    font-weight: 500;
    color: #4A5568;
    margin-top: 8px;
}

/* SECTIONS */
.section {
    padding: 100px 0;
}

.section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 700;
}

/* BOOK GRID (NEW) */
.book-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    align-items: start;
    margin-top: 40px;
}

.book-cover {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* AUTHORS */
.authors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.author {
    text-align: center;
}

.author img {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 100%;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 16px;
}

.author h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    font-weight: 600;
    text-align: center;
}

.author p {
    color: #4A5568;
    text-align: left;
    margin: 0 auto;
    max-width: 650px;
}

/* ENDORSEMENTS */
.endorsements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.endorsement-card {
    background: #FFFFFF;
    border: 1px solid #E5E5E5;
    padding: 24px;
    border-radius: 12px;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.endorsement-card:hover {
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transform: translateY(-4px);
}

.endorsement-card span {
    display: block;
    margin-top: 12px;
    color: #4A5568;
    font-size: 0.9rem;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 40px 0;
    background: #F7F7F7;
    margin-top: 60px;
    font-size: 0.9rem;
    color: #4A5568;
}

/* ANIMATIONS */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.4rem;
    }

    .book-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .book-cover {
        max-width: 260px;
        margin: 0 auto 24px;
    }
}