.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 80vh;
    background-color: #f9f9f9;
    padding: 20px;
    box-sizing: border-box;
}

.login-box {
    background-color: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 30px;
    color: #333;
    font-size: 28px;
}

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

.login-input-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: bold;
}

.login-input-group input {
    width: calc(100% - 20px);
    padding: 12px 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
}

.login-button {
    width: 100%;
    padding: 15px;
    background-color: darkslategray;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 10px;
}

.login-button:hover {
    background-color: darkgray;
}

.social-login {
    margin-top: 25px;
    border-top: 1px solid #eee;
    padding-top: 25px;
}

.social-login p {
    color: #777;
    margin-bottom: 15px;
    font-size: 15px;
}

.kakao-login-button {
    background-color: #FEE500;
    color: #3C1E1E;
    padding: 15px;
    border-radius: 6px;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.kakao-login-button:hover {
    background-color: #FEDA00;
}

.kakao-login-button img {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.signup-link {
    margin-top: 20px;
    font-size: 15px;
    color: #666;
}

.signup-link a {
    color: darkslategray;
    text-decoration: none;
    font-weight: bold;
}

.signup-link a:hover {
    text-decoration: underline;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .login-container {
        height: 70vh;
        padding: 15px;
    }
    
    .login-box {
        padding: 30px 25px;
        max-width: 350px;
    }
    
    .login-box h2 {
        font-size: 24px;
        margin-bottom: 25px;
    }
    
    .login-input-group {
        margin-bottom: 18px;
    }
    
    .login-input-group input {
        padding: 10px 8px;
        font-size: 15px;
    }
    
    .login-button {
        padding: 13px;
        font-size: 16px;
    }
    
    .kakao-login-button {
        padding: 13px;
        font-size: 15px;
    }
    
    .kakao-login-button img {
        width: 22px;
        height: 22px;
    }
}

@media (max-width: 480px) {
    .login-container {
        height: 65vh;
        padding: 10px;
    }
    
    .login-box {
        padding: 25px 20px;
        max-width: 320px;
    }
    
    .login-box h2 {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    .login-input-group {
        margin-bottom: 15px;
    }
    
    .login-input-group label {
        font-size: 14px;
        margin-bottom: 6px;
    }
    
    .login-input-group input {
        padding: 8px 6px;
        font-size: 14px;
    }
    
    .login-button {
        padding: 12px;
        font-size: 15px;
    }
    
    .social-login {
        margin-top: 20px;
        padding-top: 20px;
    }
    
    .social-login p {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    .kakao-login-button {
        padding: 12px;
        font-size: 14px;
    }
    
    .kakao-login-button img {
        width: 20px;
        height: 20px;
        margin-right: 8px;
    }
    
    .signup-link {
        margin-top: 15px;
        font-size: 14px;
    }
}

@media (max-width: 360px) {
    .login-container {
        height: 60vh;
        padding: 8px;
    }
    
    .login-box {
        padding: 20px 15px;
        max-width: 300px;
    }
    
    .login-box h2 {
        font-size: 20px;
        margin-bottom: 18px;
    }
    
    .login-input-group {
        margin-bottom: 12px;
    }
    
    .login-input-group label {
        font-size: 13px;
        margin-bottom: 5px;
    }
    
    .login-input-group input {
        padding: 7px 5px;
        font-size: 13px;
    }
    
    .login-button {
        padding: 10px;
        font-size: 14px;
    }
    
    .kakao-login-button {
        padding: 10px;
        font-size: 13px;
    }
    
    .kakao-login-button img {
        width: 18px;
        height: 18px;
        margin-right: 6px;
    }
    
    .signup-link {
        margin-top: 12px;
        font-size: 13px;
    }
}