.login-container {
    padding: 40px 50px;
    width: 500px;
    max-width: 90vw;
    backdrop-filter: blur(10px);
    background: #FFFFFF 0% 0% no-repeat padding-box;
    box-shadow: 4px -2px 24px #FFFFFF;
    border-radius: 30px;
    margin: 0 auto;
}

.login-title {
    text-align: center;
    font-size: 42px;
    font-weight: 900;
    color: #1D1D1D;
    letter-spacing: 1px;
}

.login-title-eg {
    letter-spacing: 5.4px;
    color: #1D1D1D;
    font-weight: 300;
}

.basic-field {
    margin-bottom: 15px;
    position: relative;
}

.basic-input-wrapper {
    position: relative;
    display: block;
}

.basic-icon {
    position: absolute;
    left: 0;
    bottom: 16px;
    width: 20px;
    color: #9e9e9e;
    font-size: 16px;
    z-index: 2;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.basic-input {
    width: 100%;
    padding: 20px 0 12px 30px;
    background: transparent;
    border: none;
    border-bottom: 2px solid #e0e0e0;
    color: #333;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    box-sizing: border-box;
}

.basic-input:focus {
    border-bottom-color: var(--primary-color);
}

.basic-input:hover:not(:focus) {
    border-bottom-color: #bdbdbd;
}

.basic-input:focus + .basic-label,
.basic-input:not(:placeholder-shown) + .basic-label,
.basic-input.has-content + .basic-label {
    top: 0;
    font-size: 12px;
    color: var(--primary-color);
    transform: translateY(0);
}

.basic-input:focus ~ .basic-icon {
    color: var(--primary-color);
}

.basic-label {
    position: absolute;
    left: 30px;
    top: 20px;
    font-size: 16px;
    color: #888;
    transition: all 0.3s ease;
    pointer-events: none;
    transform-origin: left top;
    background: transparent;
}

.basic-login-btn {
    width: 100%;
    padding: 16px;
    background: #1D1D1D;
    border: none;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 40px 0 20px 0;
    box-shadow: 0 2px 8px rgba(36, 49, 108, 0.2);
    border-radius: 29px;
}

.basic-login-btn:hover {
    background: #111;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(36, 49, 108, 0.3);
}

.basic-login-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(36, 49, 108, 0.2);
}

.basic-help-section {
    text-align: right;
}

.basic-help-link {
    color: #7A7A7D;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.basic-join-link {
    color: #1D1D1D;
    text-decoration: underline;
    font-size: 14px;
    transition: color 0.3s ease;
}

.basic-help-link:hover, .basic-join-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.basic-divider {
    text-align: center;
    margin: 30px 0;
    position: relative;
    color: #888;
    font-size: 14px;
}

.basic-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, #ddd 20%, #ddd 80%, transparent);
}

.basic-divider span {
    padding: 0 15px;
    position: relative;
    z-index: 1;
}

.password-toggle {
    position: absolute;
    top: 30%;
    right: 5%;
}

#password-visible, #password-invisible {
    cursor: pointer;
    color: var(--secondary-text-color);
}

#password-visible:hover, #password-invisible:hover {
    color: var(--primary-color);
    transition: color 0.3s ease;
}

/* 반응형 개선 */
@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
        margin: 20px auto;
        border: #bdbdbd 1px solid;
    }
    
    .login-title {
        font-size: 24px;
    }
    
    .basic-field {
        margin-bottom: 10px;
    }
}