body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #f0f2f5;
}
nav {
    background: #ffffff;
    border-right: 1px solid #ddd;
    color: #333;
    padding: 2em 1em;
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 220px;
    overflow-y: auto;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
}
nav img {
    display: block;
    margin: 0 auto 2em;
    max-width: 100%;
}
nav ul {
    list-style: none;
    padding: 0;
}
nav ul li {
    margin: 1em 0;
}
nav ul li a {
    color: #333;
    text-decoration: none;
    font-size: 1.1em;
    display: block;
    padding: 0.5em 1em;
    border-radius: 5px;
    transition: background 0.3s, color 0.3s;
}
nav ul li a:hover {
    background: #4CAF50;
    color: #fff;
}
.login-form {
    background: #ffffff;
    border-left: 1px solid #ddd;
    color: #333;
    padding: 2em 1em;
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    width: 220px;
    overflow-y: auto;
    box-shadow: -2px 0 4px rgba(0, 0, 0, 0.1);
}
.login-form h2 {
    font-size: 1.2em;
    margin-bottom: 1em;
    color: #4CAF50;
}
.login-form form {
    display: flex;
    flex-direction: column;
}
.login-form form input {
    margin-bottom: 1em;
    padding: 0.5em;
    font-size: 1em;
    border: 1px solid #ddd;
    border-radius: 5px;
}
.login-form form button {
    padding: 0.5em;
    font-size: 1em;
    color: white;
    background: #4CAF50;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}
.login-form form button:hover {
    background: #45a049;
}
main {
    margin-left: 240px;
    margin-right: 240px;
    padding: 2em;
    margin-top: 20px;
    flex-grow: 1;
    background: #ffffff;
    padding-bottom: 60px; /* space for footer */
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    max-width: 1200px;
    padding: 40px;
    background-color: white;
}
h1 {
    font-size: 2.5em;
    margin-bottom: 0.5em;
    color: #4CAF50;
}
p {
    line-height: 1.6;
    margin-bottom: 1.2em;
    font-size: 1.1em;
}
form {
    display: flex;
    flex-direction: column;
}
.contact-form {
    max-width: 50%;
}
form input, form textarea {
    margin-bottom: 1em;
    padding: 0.5em;
    font-size: 1em;
    border: 1px solid #ddd;
    border-radius: 5px;
}
form button {
    padding: 0.5em;
    font-size: 1em;
    color: white;
    background: #4CAF50;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}
form button:hover {
    background: #45a049;
}
footer {
    background: #4CAF50;
    color: white;
    text-align: center;
    padding: 1em 0;
    position: fixed;
    bottom: 0;
    width: 100%;
    left: 0;
}