body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    width: 500px;
    text-align: center;
}

.logo {
    margin-bottom: 30px;
    max-width: 300px;
    height: auto;
}

h1 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #666;
}

.form-group input {
    width: 100%;
    padding: 12px;
    box-sizing: border-box;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.captcha-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.captcha-group input {
    width: 150px;
}

.captcha-group img {
    height: 40px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
}

.btn {
    width: 100%;
    padding: 12px;
    background-color: #4a7c7c;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 20px;
    font-size: 16px;
}

.btn:hover {
    background-color: #3b6363;
}

.forgot-password {
    display: block;
    margin-top: 15px;
    color: #4a7c7c;
    text-decoration: none;
}

.forgot-password:hover {
    text-decoration: underline;
}

.announcement {
    margin-top: 30px;
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    padding: 0 20px;
}

.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}