body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #212529;
}

main {
    padding: 20px;
}

h1, h2 {
    color: #0056b3;
    margin-bottom: 20px;
}

/* Navbar styles */
nav {
    background-color: #343a40;
    padding: 10px 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav a {
    color: #ffffff;
    text-decoration: none;
    padding: 8px 15px;
    margin: 0 5px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

nav a:hover {
    background-color: #495057;
    color: #ffffff;
}


/* Table styles */
table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    background-color: #ffffff;
}

thead {
    background-color: #007bff;
    color: #ffffff;
}

th, td {
    padding: 12px 50px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

tbody tr:nth-of-type(even) {
    background-color: #f8f9fa;
}

tbody tr:hover {
    background-color: #e9ecef;
}

th {
    font-weight: 600;
}

/* Button Styles */
.btn {
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    color: #fff;
    background-color: #0069d9;
    border-color: #0062cc;
}

.btn-danger {
    color: #fff;
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-danger:hover {
    color: #fff;
    background-color: #c82333;
    border-color: #bd2130;
}

/* Form Styles */
form {
    margin-top: 20px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

form p {
    margin-bottom: 15px;
}

form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

form input[type="text"],
form input[type="number"],
form select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

form button[type="submit"] {
    width: auto;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

form button[type="submit"]:hover {
    background-color: #0056b3;
}