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

body {
    font-family: Arial, sans-serif;
    background-color: #fffaf4;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.navbar {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #8b5e3c;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav-links a:hover {
    color: #c47f5a;
}

.hero {
    min-height: 80vh;
    background: linear-gradient(rgba(255, 250, 244, 0.9), rgba(255, 230, 210, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
}

.hero-text {
    max-width: 800px;
}

.hero h1 {
    font-size: 48px;
    color: #6f3f2a;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.button {
    display: inline-block;
    background-color: #c47f5a;
    color: white;
    padding: 14px 28px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
}

.button:hover {
    background-color: #a86645;
}

.intro,
.mission {
    max-width: 900px;
    margin: 70px auto;
    padding: 0 20px;
    text-align: center;
}

.intro h2,
.mission h2 {
    font-size: 34px;
    color: #8b5e3c;
    margin-bottom: 20px;
}

.intro p,
.mission p {
    font-size: 18px;
}

.categories {
    max-width: 1100px;
    margin: 60px auto;
    padding: 0 20px;
    display: flex;
    gap: 30px;
    justify-content: center;
}

.card {
    background-color: #ffffff;
    padding: 35px;
    border-radius: 18px;
    width: 50%;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.card h3 {
    font-size: 28px;
    color: #6f3f2a;
    margin-bottom: 15px;
}

.card p {
    margin-bottom: 20px;
}

.card a {
    color: #c47f5a;
    font-weight: bold;
    text-decoration: none;
}

.card a:hover {
    text-decoration: underline;
}

footer {
    background-color: #6f3f2a;
    color: white;
    text-align: center;
    padding: 25px;
    margin-top: 60px;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .hero h1 {
        font-size: 34px;
    }

    .categories {
        flex-direction: column;
    }

    .card {
        width: 100%;
    }
}

.social-links {
    margin-bottom: 15px;
}

.social-links a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
}

.social-links a:hover {
    text-decoration: underline;
}

.page-header {
    text-align: center;
    padding: 70px 20px 40px;
    background-color: #ffe8d6;
}

.page-header h1 {
    font-size: 42px;
    color: #6f3f2a;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
}

.book-section {
    max-width: 1100px;
    margin: 60px auto;
    padding: 0 20px;
}

.book-section h2 {
    font-size: 32px;
    color: #8b5e3c;
    margin-bottom: 30px;
    text-align: center;
}

.book-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.book-card {
    background-color: white;
    padding: 25px;
    border-radius: 18px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.book-cover {
    height: 220px;
    background-color: #f6d6bd;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6f3f2a;
    font-weight: bold;
    margin-bottom: 20px;
}

.book-card h3 {
    color: #6f3f2a;
    margin-bottom: 10px;
}

.book-card p {
    margin-bottom: 15px;
}

.book-card a {
    color: #c47f5a;
    font-weight: bold;
    text-decoration: none;
}

.book-card a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .book-grid {
        grid-template-columns: 1fr;
    }
}