body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #333;
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 15px;
}

input, select, button {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

#logoutBtn {
    background-color: #f44336;
    margin-bottom: 20px;
}

#logoutBtn:hover {
    background-color: #da190b;
}

.api-section {
    margin-bottom: 30px;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.api-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.api-form input, .api-form select {
    flex: 1;
    min-width: 150px;
}

.api-btn {
    margin-top: 10px;
}

#response {
    margin-top: 20px;
    padding: 15px;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#response pre {
    white-space: pre-wrap;
    word-wrap: break-word;
}

#message {
    margin-top: 10px;
    color: red;
}