.login-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    width: 900px;
    min-height: 550px;
    display: flex;
    overflow: hidden;
    position: relative;
}

.left-panel {
    background: linear-gradient(to bottom right, #1a73e8, #0d47a1);
    width: 40%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
}

.left-panel h2 {
    font-size: 28px;
    margin-bottom: 25px;
    font-weight: 600;
}

.left-panel p {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 30px;
    opacity: 0.9;
}

.qrcode-container {
    background: white;
    width: 180px;
    height: 180px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.qrcode-placeholder {
    width: 160px;
    height: 160px;
    background:
            linear-gradient(45deg, #f3f3f3 25%, transparent 25%, transparent 75%, #f3f3f3 75%),
            linear-gradient(45deg, #f3f3f3 25%, white 25%, white 75%, #f3f3f3 75%);
    background-size: 16px 16px;
    background-position: 0 0, 8px 8px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qrcode-placeholder::before {
    content: "";
    position: absolute;
    width: 40px;
    height: 40px;
    background: #1a73e8;
    border-radius: 8px;
}

.wechat-icon {
    font-size: 60px;
    color: #1a73e8;
    position: relative;
    z-index: 2;
}

.scan-text {
    font-size: 14px;
    margin-top: 15px;
    font-weight: 500;
}

.right-panel {
    width: 60%;
    padding: 50px 40px;
}

.right-panel h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 40px;
    font-weight: 600;
}

.tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.tab {
    padding: 12px 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #666;
    transition: all 0.3s ease;
    position: relative;
}

.tab.active {
    color: #1a73e8;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: #1a73e8;
    border-radius: 3px 3px 0 0;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.input-group {
    margin-bottom: 25px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

.input-group input {
    width: 93%;
    padding: 14px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    transition: border 0.3s;
}

.input-group input:focus {
    border-color: #1a73e8;
    outline: none;
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

.send-code {
    position: absolute;
    right: 10px;
    top: 38px;
    background: #1a73e8;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.3s;
}

.send-code:hover {
    background: #0d5bb8;
}

.send-code.disabled {
    background: #cccccc;
    cursor: not-allowed;
}

.agreement {
    display: flex;
    align-items: flex-start;
    margin: 25px 0 30px;
}

.agreement input {
    margin-top: 4px;
    margin-right: 10px;
}

.agreement label {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.agreement a {
    color: #1a73e8;
    text-decoration: none;
}

.agreement a:hover {
    text-decoration: underline;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: #1a73e8;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #0d5bb8;
}

.other-options {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: #666;
}

.other-options a {
    color: #1a73e8;
    text-decoration: none;
    margin: 0 5px;
}

.other-options a:hover {
    text-decoration: underline;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.3s;
}

.close-btn:hover {
    background: #e0e0e0;
}

.close-btn i {
    color: #666;
    font-size: 18px;
}

@media (max-width: 950px) {
    .login-container {
        flex-direction: column;
        width: 90%;
        max-width: 500px;
    }

    .left-panel, .right-panel {
        width: 100%;
    }

    .left-panel {
        padding: 30px;
    }
}