body {
    background: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.login-container {
    background: #fff;
    padding: 32px 32px 28px 32px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    width: 340px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.login-container h2 {
    margin-bottom: 24px;
    text-align: center;
    font-size: 1.6em;
    font-weight: bold;
}
.login-form {
    width: 100%;
    display: flex;
    flex-direction: column;
}
.login-form label {
    margin-bottom: 6px;
    font-weight: bold;
    font-size: 1em;
}
.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 18px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
    box-sizing: border-box;
}
.form-text.res-error {
    color: #e74c3c;
    font-size: 0.95em;
    margin-bottom: 12px;
    /* input과 에러 메시지 간격 조정 */
    margin-top: -4px;
}
.login-form button {
    width: 100%;
    padding: 12px;
    background: #1680fa;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    margin-top: 6px;
}
.login-form button:hover {
    background: #0d5ec2;
}