* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #4CAF50, #2E7D32);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 12px;
    width: 320px;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.login-box h2 {
    margin-bottom: 10px;
}

.login-box p {
    margin-bottom: 20px;
    color: #777;
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    outline: none;
    transition: 0.2s;
}

.login-box input:focus {
    border-color: #4CAF50;
}

.login-box button {
    width: 100%;
    padding: 12px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.2s;
}

.login-box button:hover {
    background: #388E3C;
}

.error {
    color: red;
    margin-top: 10px;
    font-size: 14px;
}