mtb_dcatadmin_plus/resources/views/distributor/pages/login.blade.php

<style>
    .login-box {
        margin-top: -10rem;
        padding: 5px;
    }
    .login-card-body {
        padding: 1.5rem 1.8rem 1.6rem;
    }
    .card, .card-body {
        border-radius: .25rem
    }
    .login-btn {
        padding-left: 2rem!important;;
        padding-right: 1.5rem!important;
        width: 100%;
    }
    .content {
        overflow-x: hidden;
    }
    .form-group .control-label {
        text-align: left;
    }
    .justify-content-between {
        margin-top: 1rem;
    }
    #captcha {
        width: 185px;
        float: left;
    }
    .captcha-img {
        float: right;
        width: 110px;
        height: 34px;
    }
</style>

<div class="login-page bg-40">
    <div class="login-box">
        <div class="login-logo mb-2">
            {{ trans('admin.site_name') }}
        </div>
        <div class="card">
            <div class="card-body login-card-body shadow-100">
                {{--                <p class="login-box-msg mt-1 mb-1">{{ __('admin.welcome_back') }}</p>--}}

                <form id="login-form" method="POST" action="{{ admin_url('auth/login') }}">

                    <input type="hidden" name="_token" value="{{ csrf_token() }}"/>

                    <input type="hidden" name="timeZoneName" id="timeZoneName"  value=""/>


                    <fieldset class="form-label-group form-group position-relative has-icon-left">
                        <input
                            type="text"
                            class="form-control {{ $errors->has('username') ? 'is-invalid' : '' }}"
                            name="username"
                            placeholder="{{ trans('admin.username') }}"
                            value="{{ old('username') }}"
                            required
                            autofocus
                        >

                        <div class="form-control-position">
                            <i class="feather icon-user"></i>
                        </div>

                        <label for="email">{{ trans('admin.username') }}</label>

                        <div class="help-block with-errors"></div>
                        @if($errors->has('username'))
                            <span class="invalid-feedback text-danger" role="alert">
                                            @foreach($errors->get('username') as $message)
                                    <span class="control-label" for="inputError"><i class="feather icon-x-circle"></i> {{$message}}</span><br>
                                @endforeach
                                        </span>
                        @endif
                    </fieldset>

                    <fieldset class="form-label-group form-group position-relative has-icon-left">
                        <input
                            minlength="5"
                            maxlength="20"
                            id="password"
                            type="password"
                            class="form-control {{ $errors->has('password') ? 'is-invalid' : '' }}"
                            name="password"
                            placeholder="{{ trans('admin.password') }}"
                            required
                            autocomplete="current-password"
                        >

                        <div class="form-control-position">
                            <i class="feather icon-lock"></i>
                        </div>
                        <label for="password">{{ trans('admin.password') }}</label>

                        <div class="help-block with-errors"></div>
                        @if($errors->has('password'))
                            <span class="invalid-feedback text-danger" role="alert">
                                            @foreach($errors->get('password') as $message)
                                    <span class="control-label" for="inputError"><i class="feather icon-x-circle"></i> {{$message}}</span><br>
                                @endforeach
                                            </span>
                        @endif

                    </fieldset>
                    <fieldset class="form-label-group form-group position-relative has-icon-left">
                        <input
                            minlength="6"
                            maxlength="6"
                            id="captcha"
                            type="captcha"
                            class="form-control"
                            name="captcha"
                            placeholder="{{ trans('admin.captcha') }}"
                            required
                        >
                        <img src="/dist/captcha?{{ time() }}" alt="captcha" class="captcha-img" onclick="this.src='/dist/captcha?'+Math.random()">

                        <div class="form-control-position">
                            <i class="feather icon-image"></i>
                        </div>
                        <label for="captcha">{{ trans('admin.captcha') }}</label>

                        <div class="help-block with-errors"></div>
                        @if($errors->has('captcha'))
                            <span class="invalid-feedback text-danger" role="alert">
                                            @foreach($errors->get('captcha') as $message)
                                    <span class="control-label" for="inputError"><i class="feather icon-x-circle"></i> {{$message}}</span><br>
                                @endforeach
                            </span>
                        @endif

                    </fieldset>

                    <button type="submit" class="btn btn-primary float-letf login-btn">
                        {{ __('admin.login') }}
                        <i class="feather icon-arrow-right"></i>
                    </button>

                    <div class="form-group d-flex justify-content-between align-items-center">
                        <div class="text-left">
                            @if(config('admin.auth.remember'))
                                <fieldset class="checkbox">
                                    <div class="vs-checkbox-con vs-checkbox-primary">
                                        <input id="remember" name="remember"  value="1" type="checkbox" {{ old('remember') ? 'checked' : '' }}>
                                        <span class="vs-checkbox">
                                                        <span class="vs-checkbox--check">
                                                          <i class="vs-icon feather icon-check"></i>
                                                        </span>
                                                    </span>
                                        <span> {{ trans('admin.remember_me') }}</span>
                                    </div>
                                </fieldset>
                            @endif
                        </div>
                    </div>

                    <div class="form-group d-flex justify-content-between align-items-center">
                        <div class="text-left">
                            <a class="lang-item" href="javascript:void(0);" data-lang="en">English</a>
                            / <a class="lang-item" href="javascript:void(0);" data-lang="zh_CN">中文</a>
                        </div>
                    </div>

                </form>

            </div>
        </div>
    </div>
</div>

<script>
    var getTimeZoneInfo = function () {
        const date = new Date();

        // 尝试获取时区名称（现代浏览器）
        let timeZoneName;
        try {
            timeZoneName = Intl.DateTimeFormat().resolvedOptions().timeZone;
        } catch (e) {
            timeZoneName = null;
        }

        // 计算偏移量（兼容所有浏览器）
        const offsetMinutes = date.getTimezoneOffset();
        const offsetHours = -offsetMinutes / 60;
        const offsetString = `UTC${offsetHours >= 0 ? '+' : ''}${offsetHours}`;

        return {
            name: timeZoneName || 'Unknown', // 时区名称（如 "Asia/Shanghai"）
            offset: offsetString,            // 偏移量（如 "UTC+8"）
            offsetMinutes: offsetMinutes     // 分钟差（如 -480）
        };
    }

    Dcat.ready(function () {

        $('#timeZoneName').val(getTimeZoneInfo().name);

        // ajax表单提交
        $('#login-form').form({
            validate: true,
        });
    });
</script>
<script>

    document.querySelectorAll('.lang-item').forEach(item => {
        item.addEventListener('click', function() {
            const lang = this.getAttribute('data-lang');
            switchLanguage(lang);
        });
    });

    function switchLanguage(lang) {
        fetch(`/dist/language-switch?lang=${encodeURIComponent(lang)}`, {
            method: 'GET'
        })
            .then(response => {
                if (!response.ok) {
                    throw new Error('Network response was not ok');
                }
                return response.json();
            })
            .then(data => {
                if (data.success) {
                    window.location.reload();
                } else {
                    throw new Error(data.error || 'Language switch failed');
                }
            })
            .catch(error => {
                console.error('Language Switch Error:', error);
                alert('Failed to switch language. Please try again.');
            });
    }
</script>