/* BODY and GLOBAL */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f6f8fa;
    color: #333;
}
a { text-decoration: none; color: inherit; }
h1, h2, h3, h4 { color: #2c3e50; margin: 10px 0; }

/* HEADER */
header {
    background-color: #d3bb91;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}
header .logo a {
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
}
header nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}
header nav ul li { margin-left: 20px; }
header nav ul li a {
    color: #fff;
    font-weight: 500;
    transition: color 0.3s;
}
header nav ul li a:hover { color: #ffe066; }

/* MAIN CONTENT */
main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 50px;
    min-height: calc(100vh - 120px);
}

/* HERO SECTION */
.hero {
    text-align: center;
    padding: 30px 20px;
    width: 100%;
    max-width: 1200px;
}
.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}
.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
}

/* Showcase Section */
.showcase {
    text-align: center;
    padding: 40px 20px;
}
.showcase-container {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}
.showcase-item {
    width: 250px;
}
.showcase-item img {
    width: 100%;
    height: 240px;
    border-radius: 10px;
    margin-bottom: 10px;
}

/* FEATURED BOOKS CONTAINER */
.featured-books {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 60px;
}
.featured-books h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #2c3e50;
}

/* CARDS */
.books-container, .authors-container {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    justify-content: center;
}
.book-card, .author-card {
    background-color: #fff;
    border-radius: 8px;
    width: 220px;
    padding: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}
.book-card:hover, .author-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.2);
}
.book-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 5px;
}
.book-card h3 { margin: 10px 0 5px; font-size: 1.1rem; }
.book-card p { font-size: 0.95rem; margin: 5px 0; }
.book-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}
.book-link:hover .book-card, .author-card{
    box-shadow: 0px 4px 12px rgba(0,0,0,0.2);
    transform: translateY(-3px);
}
.author-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 5px;
}
.author-card h3 { margin: 10px 0 5px; font-size: 1.1rem; }

/* BUTTONS */
.btn, button, form button {
    display: inline-block;
    background-color: #d6b6a4;
    color: #fff;
    padding: 8px 15px;
    border: none;
    border-radius: 5px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}
.btn:hover, button:hover, form button:hover { background-color: #fff; }
.btn.disabled { opacity: 0.5; pointer-events: none; }

/* FORMS */
form, .contact-form {
    background-color: #fff;
    padding: 25px 30px;
    border-radius: 10px;
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
    max-width: 400px;
    margin: 30px auto;
    text-align: center;
}
form h2, .contact-info h1, .contact-info h3, .contact-form h3 {
    color: #2c3e50;
    margin-bottom: 15px;
}
form input, form select, form textarea,
.contact-form form input, .contact-form form textarea {
    width: 100%;
    padding: 12px 15px;
    margin: 10px 0;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.3s;
}
form input:focus, form textarea:focus, form select:focus {
    border-color: #d3bb91;
    outline: none;
}
form .error, .error { color: #e74c3c; font-weight: 500; }
form .success, .success { color: #27ae60; font-weight: 500; }

/* TABLES */
table, .orders-table, .cart-form table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    border-radius: 8px;
    margin-top: 20px;
    overflow: hidden;
}
th, td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}
th { background-color: #d3bb91; color: #fff; font-weight: 600; }
tr:hover { background-color: #f1f1f1; }

/* ABOUT PAGE */
.about-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 40px 20px;
}
.about-container h1 { font-size: 2rem; margin-bottom: 20px; }
.about-container p { font-size: 1.05rem; line-height: 1.6; }
.about-images {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}
.about-images img {
    width: 300px;
    border-radius: 10px;
}

/* CONTACT PAGE */
.contact-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

/* BOOK DETAILS PAGE */
.book-details {
    display: flex;
    gap: 140px;
    max-width: 1000px;
    margin: 40px auto;
    align-items: flex-start;
    font-family: Arial, sans-serif;
}
.book-image {
    flex: 0 0 350px;
}
.book-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.book-info {
    flex: 1;
}
.book-info h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}
.book-info p {
    font-size: 1rem;
    margin: 8px 0;
    line-height: 1.5;
}
.book-info .btn {
    display: inline-block;
    margin-top: 15px;
    margin-right: 10px;
    padding: 10px 20px;
    text-decoration: none;
    background-color: #d3bb91;
    color: #fff;
    border-radius: 5px;
    transition: background-color 0.3s;
}
.book-info .btn:hover {
    background-color: #d3bb91;
}

/* CART PAGE */
.cart-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 15px;
}
.cart-summary {
    margin-top: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.remove-link { color: #e74c3c; text-decoration: none; }

/* CHECKOUT PAGE */
.checkout-container { display: flex; gap: 50px; margin-top: 20px; }
.checkout-left, .checkout-right {
    flex: 1;
    padding: 50px;
    border: 1px solid #ccc;
    border-radius: 10px;
    background-color: #fff;
}
.checkout-left table { border-collapse: collapse; }
.checkout-left th, .checkout-left td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: left;
}
.checkout-right input, .checkout-right select, .checkout-right button {
    width: 100%;
    margin-bottom: 15px;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

/* FOOTER */
footer {
    background-color: #d3bb91;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    font-size: 0.9rem;
    position: relative;
    bottom: 0;
    width: 100%;
}

/* RESPONSIVE */
@media(max-width: 768px){
    main { padding: 15px 20px; }
    .books-container { gap: 15px; }
    header { flex-direction: column; align-items: flex-start; }
    header nav ul { flex-direction: column; width: 100%; }
    header nav ul li { margin-left: 0; margin-bottom: 10px; }
    .contact-container { flex-direction: column; gap: 20px; }
    .book-details {
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }
    .book-image {
        flex: 1 1 100%;
        max-width: 80%;
        margin-bottom: 20px;
    }
    .book-info {
        flex: 1 1 100%;
        max-width: 100%;
        text-align: center;
    }
    .book-info .btn {
        margin-right: 0;
        margin-bottom: 10px;
    }
    .hero { padding: 80px 15px; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .books-container { gap: 15px; justify-content: center; }
}
@media(max-width: 480px){
    .book-card { width: 100%; }
    input, select, textarea, button { font-size: 0.95rem; }
    form { padding: 20px 15px; }
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 0.95rem; }
}
@media(max-width: 1024px) {
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
}