body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background-color: #ffffff;
    padding: 50px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    font-size: 1.8rem;
    color: #003366;
    margin-bottom: 10px;
    font-weight: 700;
}

h2 {
    font-size: 1rem;
    color: #666666;
    margin-bottom: 30px;
    font-weight: 400;
}

.error-message {
    text-align: center;
    color: #d9534f;
    background-color: #f2dede;
    border: 1px solid #ebccd1;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 14px;
}

.input-group {
    margin-bottom: 20px;
}

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

.login-button {
    width: 100%;
    padding: 12px;
    background-color: #003366;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-button:hover {
    background-color: #002244;
}