body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: #f0f2f5;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box h1 {
    margin-bottom: 24px;
    font-size: 24px;
    color: #333;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #ccc;
    outline: none;
    font-size: 16px;
}

button {
    background: #007bff;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s;
}

button:hover {
    background: #0056b3;
}

.footer {
    margin-top: 20px;
    font-size: 13px;
    color: #777;
}

.footer a {
    color: #007bff;
    text-decoration: none;
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert.info {
    background: #e7f3fe;
    color: #31708f;
}

.alert.success {
    background: #d4edda;
    color: #155724;
}

.alert.warning {
    background: #fff3cd;
    color: #856404;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
}