* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}
body { 
    font-family: 'Segoe UI', 'Malgun Gothic', sans-serif; 
    background: #f8f9fa; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    height: 100vh; 
}
.login-box { 
    background: white; 
    padding: 40px; 
    border-radius: 8px; 
    box-shadow: 0 4px 12px rgba(0,0,0,0.1); 
    width: 350px; 
    height: 380px;
    min-height: 380px;
    max-height: 380px;
    position: relative; 
}
.lang-container { 
    position: absolute; 
    top: 15px; 
    right: 15px; 
}
select { 
    padding: 4px 6px; 
    border-radius: 4px; 
    border: 1px solid #ccc; 
    font-weight: bold; 
    cursor: pointer; 
    font-size: 12px;
    height: 26px;
    width: 85px;
}
h2 { 
    margin-top: 15px; 
    margin-bottom: 25px; 
    text-align: center; 
    color: #333; 
    font-size: 24px;
    height: 32px;
    line-height: 32px;
    white-space: nowrap;
}
.input-group { 
    margin-bottom: 20px; 
    height: 65px; 
}
.input-group label { 
    display: block; 
    margin-bottom: 5px; 
    font-weight: bold; 
    color: #666; 
    font-size: 14px; 
    height: 18px;
    line-height: 18px;
    white-space: nowrap;
}
.input-group input { 
    width: 100%; 
    padding: 10px; 
    border: 1px solid #ccc; 
    border-radius: 4px; 
    font-size: 16px; 
    height: 42px; 
}
button { 
    width: 100%; 
    padding: 12px; 
    background: #007bff; 
    color: white; 
    border: none; 
    border-radius: 4px; 
    font-size: 16px; 
    font-weight: bold; 
    cursor: pointer; 
    height: 45px;
    white-space: nowrap;
}
button:hover { 
    background: #0056b3; 
}
.error-msg { 
    color: #dc2626; 
    font-size: 13px; 
    margin-top: 12px; 
    text-align: center; 
    font-weight: 500; 
    height: 18px;
    line-height: 18px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}