/* General Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
}

/* Header */
header {
    background-color: #007bff;
    color: #fff;
    padding: 10px 0;
}

header .logo img {
    max-height: 60px;
}

header .user-info a {
    margin-left: 10px;
}

/* Navigation Bar */
.navbar {
    margin-bottom: 20px;
}

.navbar-nav .nav-link {
    color: #007bff !important;
}

.navbar-nav .nav-link.active {
    font-weight: bold;
}

/* Main Content */
main {
    padding: 20px 0;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px; /* Space between cards */
}

.card {
    flex: 1 1 calc(50% - 20px); /* Two cards per row, adjusted for gap */
    border: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

.card-img-top {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 15px;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.card-body .btn {
    width: 100%;
}

/* Footer */
footer {
    background-color: #343a40;
    color: #fff;
    padding: 15px 0;
    text-align: center;
}

.dropdown-container {
            margin: 20px 0;
        }

        .dropdown-container select {
            padding: 10px;
            font-size: 16px;
        }

        .book-list {
            margin-top: 20px;
        }

        .book-list .book-item {
            margin-bottom: 10px;
        }

        .book-list .book-item a {
            color: #007bff;
            text-decoration: none;
        }

        .book-list .book-item a:hover {
            text-decoration: underline;
        }

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}