* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #333;
}

.login-box {
    width: 320px;
    padding: 32px;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 24px;
    font-weight: 600;
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.login-box input:focus {
    border-color: #444;
}

.login-box button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: #222;
    color: white;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s;
}

.login-box button:hover {
    background: #000;
}

.error {
    margin-top: 12px;
    text-align: center;
    color: #d32f2f;
    font-size: 14px;
    min-height: 18px;
}