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

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #3498db;
}

main {
    margin-top: 80px;
}

section {
    padding: 60px 0;
}

.hero {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    text-align: center;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('Okładka książki.jpg') no-repeat center center;
    background-size: cover;
    opacity: 0.2;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.book-cover {
    max-width: 300px;
    height: auto;
    border: 5px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0.3);
    margin-bottom: 30px;
}

.book-info h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.book-description {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 800px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.cta-button {
    display: inline-block;
    background-color: #e74c3c;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.2rem;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #c0392b;
}

.about, .author, .reviews {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    margin: 20px auto;
    padding: 30px;
    max-width: 1000px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about h2, .author h2, .reviews h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
    color: #2c3e50;
}

.book-details {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.book-details p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.author p, .reviews p {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.author ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.author li {
    margin-bottom: 10px;
}

.review {
    max-width: 800px;
    margin: 0 auto;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.reviewer {
    font-style: italic;
    text-align: right;
    margin-top: 15px;
}

.order {
    background: linear-gradient(135deg, #76b852 0%, #8DC26F 100%);
    text-align: center;
    padding: 60px 0;
}

.order h2 {
    margin-bottom: 30px;
    font-size: 2rem;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    background-color: rgba(255, 255, 255, 0.8);
}

.submit-button {
    background-color: #27ae60;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-button:hover {
    background-color: #219a52;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px 0;
}

/* Responsive design */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 5px 0;
    }

    .hero .container {
        padding: 0 20px;
    }

    .book-info h1 {
        font-size: 2rem;
    }

    .book-description {
        font-size: 1rem;
    }

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

    .author p, .reviews p {
        font-size: 1rem;
    }
}