/* Global styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: linear-gradient(to right, #ece9e6, #ffffff); /* Light gradient background */
    line-height: 1.6;
    transition: background 0.5s ease;
}

/* Header styles */
header {
    background: linear-gradient(to right, #667eea, #764ba2); /* Gradient header */
    color: white;
    padding: 15px 20px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    transition: background 0.3s ease;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    animation: fadeInDown 1s ease-in-out; /* Animation */
}

/* Navigation styles */
nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    transition: opacity 0.3s ease-in-out;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    transition: background-color 0.3s, transform 0.3s;
}

nav ul li a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
    transform: scale(1.1); /* Subtle scaling effect */
}

/* Section styles */
section {
    padding: 20px;
    margin: 20px auto;
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    max-width: 90%;
    transition: transform 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

section:hover {
    transform: scale(1.02);
    background-color: rgba(255, 255, 255, 0.9);
}

#home {
    text-align: center;
    animation: fadeIn 1.5s ease-in-out;
}

#searchBar {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 5px;
    transition: box-shadow 0.3s ease;
}

#searchBar:focus {
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.5);
}

/* Category list styles */
.category-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 10px;
}

.category-list button {
    padding: 12px 18px;
    border: none;
    background: linear-gradient(to right, #36d1dc, #5b86e5);
    color: white;
    cursor: pointer;
    border-radius: 5px;
    transition: background 0.3s ease, transform 0.3s ease;
}

.category-list button:hover {
    background: linear-gradient(to right, #f09819, #ff512f);
    transform: scale(1.1);
}

/* Book list styling */
.book-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    animation: fadeInUp 1.5s ease-in-out;
}

.book-item {
    background-color: #fff;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    width: 150px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.book-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    background-color: #f9f9f9;
}

/* Footer styles */
footer {
    background: linear-gradient(to right, #667eea, #764ba2);
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 20px;
    position: fixed;
    bottom: 0;
    width: 100%;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.3);
}

/* Form styles */
form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

form label {
    font-weight: bold;
    margin-bottom: 5px;
}

form input, form textarea {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 100%;
    transition: border-color 0.3s, box-shadow 0.3s;
}

form input:focus, form textarea:focus {
    border-color: #764ba2;
    box-shadow: 0 0 8px rgba(118, 75, 162, 0.3);
}

form button {
    padding: 12px;
    background: linear-gradient(to right, #36d1dc, #5b86e5);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

form button:hover {
    background: linear-gradient(to right, #ff512f, #f09819);
    transform: translateY(-2px);
}

/* Responsive styles for screens up to 600px */
@media screen and (max-width: 600px) {
    header h1 {
        font-size: 1.5rem;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    #searchBar {
        margin-top: 15px;
        font-size: 14px;
    }

    .category-list {
        flex-direction: column;
    }

    .category-list button {
        width: 100%;
        margin-bottom: 10px;
    }

    .book-item {
        width: 100%;
        max-width: 150px;
    }

    footer {
        padding: 10px 0;
    }

    section {
        padding: 15px;
    }
}

/* Hamburger button styles */
.nav-toggle {
    display: none; /* Hidden by default, shown on smaller screens */
    font-size: 24px;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
}

/* Responsive nav styles */
@media screen and (max-width: 600px) {
    .nav-toggle {
        display: block; /* Show the hamburger button */
    }

    nav {
        display: none; /* Hide the navigation by default */
        position: absolute;
        top: 60px;
        right: 0;
        background-color: #333;
        width: 100%;
        text-align: center;
        transition: transform 0.3s ease;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    nav ul li {
        margin: 0;
    }

    nav.active {
        display: block; /* Show the navigation when active */
        transform: translateY(0);
    }
}

/* Keyframes for animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}