/* General Styles */
body {
    font-family: 'Poppins', Arial, sans-serif;
    line-height: 1.8;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #212529;
}

/* Header */
header {
    background: linear-gradient(135deg, #1d3557, #457b9d);
    color: white;
    text-align: center;
    padding: 2.5rem 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-bottom: 5px solid #a8dadc;
}

header h1 {
    margin: 0;
    font-size: 3rem;
    font-weight: bold;
    text-shadow: 2px 4px 6px rgba(0, 0, 0, 0.2);
}

header p {
    margin-top: 0.5rem;
    font-size: 1.2rem;
    color: #f1faee;
}

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}

/* Book Section */
.book-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    background: white;
    margin-bottom: 3rem;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.book-section img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.book-section:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.book-section h2 {
    font-size: 2rem;
    color: #1d3557;
    margin-bottom: 1rem;
    border-bottom: 3px solid #457b9d;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.book-section p {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.book-section a {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 1.5rem;
    background: #457b9d;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.book-section a:hover {
    background: #1d3557;
}

/* Footer */
footer {
    background: #1d3557;
    color: white;
    text-align: center;
    padding: 2rem 0;
    font-size: 0.9rem;
    border-top: 5px solid #a8dadc;
}

footer p {
    margin: 0;
}

/* Buttons */
.book-section a.btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 1.5rem;
    background: #457b9d;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.book-section a.btn:hover {
    background: #1d3557;
}

/* Responsive Design */
@media (max-width: 768px) {
    .book-section {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    header h1 {
        font-size: 2.5rem;
    }

    .book-section h2 {
        font-size: 1.8rem;
    }

    .book-section p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    .book-section {
        padding: 1.5rem;
    }
}