:root {
    --primary-purple: #8A2BE2;
    --light-purple: #E6E6FA;
    --dark-purple: #4B0082;
    --deep-blue: #1E3A8A;
    --gradient-purple-blue: radial-gradient(circle at center, var(--dark-purple) 0%, var(--deep-blue) 100%);
    --gradient-purple: linear-gradient(135deg, #9370DB 0%, #8A2BE2 100%);
    --text-white: #FFFFFF;
    --text-dark: #333333;
    --text-light: #555555;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: #F9F9FF;
    color: var(--text-dark);
    margin: 0;
}

.bible-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.header-banner {
    background: white;
    border: 1px solid #eee;
    padding: 30px 20px;
    text-align: center;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
}

.book-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.book-header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
}

.book-icon {
    font-size: 2rem;
}

.book-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 10px;
}

.chapters-heading {
    background: var(--gradient-purple);
    color: var(--text-white);
    text-align: center;
    font-size: 1.2rem;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    margin: 30px auto;
    font-weight: 600;
}

.chapter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 12px;
    margin-bottom: 40px;
}

.chapter-box {
    border: 2px solid #D8BFD8;
    padding: 12px 5px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    font-weight: 600;
}

.chapter-box a {
    text-decoration: none;
    color: var(--text-dark);
    display: block;
}

.chapter-box:hover {
    background-color: var(--light-purple);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

.back-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.back-link {
    padding: 12px 20px;
    background-color: white;
    border: 1px solid #D8BFD8;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.back-link:hover {
    background-color: var(--light-purple);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

@media (max-width: 768px) {
    .chapter-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    }

    .back-link {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .book-header {
        flex-direction: column;
    }

    .chapter-grid {
        grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
    }
}