add switch button

src/features/language/components/LanguageSwitchButton.vue

@@ -0,0 +1,157 @@
+<!--
+Copyright 2026 Seekra
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<script setup>
+import { ref, computed } from 'vue';
+import { useI18n } from 'vue-i18n';
+import { loadLanguage } from '@/i18n';
+
+const { locale } = useI18n();
+
+const isOpen = ref(false);
+
+const languages = [
+    { code: 'en', label: 'English',    flag: '🇬🇧' },
+    { code: 'de', label: 'Deutsch',    flag: '🇩🇪' },
+    { code: 'fr', label: 'Français',   flag: '🇫🇷' },
+    { code: 'es', label: 'Español',    flag: '🇪🇸' },
+    { code: 'it', label: 'Italiano',   flag: '🇮🇹' },
+    { code: 'pt', label: 'Português',  flag: '🇵🇹' },
+    { code: 'zh', label: '中文',        flag: '🇨🇳' },
+    { code: 'ja', label: '日本語',      flag: '🇯🇵' },
+    { code: 'ar', label: 'العربية',    flag: '🇸🇦' },
+    { code: 'hi', label: 'हिन्दी',     flag: '🇮🇳' },
+];
+
+const currentLanguage = computed(
+    () => languages.find(l => l.code === locale.value) ?? languages[0]
+);
+
+async function selectLanguage(code) {
+    await loadLanguage(code);
+    localStorage.setItem('locale', code);
+    document.documentElement.lang = code;
+    document.documentElement.dir = code === 'ar' ? 'rtl' : 'ltr';
+    isOpen.value = false;
+}
+
+function toggle() {
+    isOpen.value = !isOpen.value;
+}
+
+function closeOnBlur() {
+    // Kleines Delay damit Click auf Option noch registriert wird
+    setTimeout(() => { isOpen.value = false; }, 150);
+}
+</script>
+
+<template>
+    <div class="language-switch" @blur="closeOnBlur" tabindex="-1">
+        <button
+            class="language-button button"
+            @click="toggle"
+            :aria-expanded="isOpen"
+            aria-haspopup="listbox"
+        >
+            <span class="flag">{{ currentLanguage.flag }}</span>
+            <span class="lang-code">{{ currentLanguage.code.toUpperCase() }}</span>
+            <span class="chevron" :class="{ open: isOpen }">▾</span>
+        </button>
+
+        <ul v-if="isOpen" class="language-dropdown" role="listbox">
+            <li
+                v-for="lang in languages"
+                :key="lang.code"
+                role="option"
+                :aria-selected="lang.code === locale"
+                :class="{ active: lang.code === locale }"
+                @click="selectLanguage(lang.code)"
+            >
+                <span class="flag">{{ lang.flag }}</span>
+                <span class="lang-label">{{ lang.label }}</span>
+            </li>
+        </ul>
+    </div>
+</template>
+
+<style scoped>
+.language-switch {
+    position: relative;
+}
+
+.language-button {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    background: none;
+    border: 1px solid var(--dark);
+    border-radius: 6px;
+    padding: 4px 10px;
+    cursor: pointer;
+    font-size: 0.9rem;
+    color: var(--dark);
+}
+
+.language-button:hover {
+    background-color: var(--light-d-1);
+}
+
+.chevron {
+    font-size: 0.75rem;
+    transition: transform 0.2s;
+    display: inline-block;
+}
+
+.chevron.open {
+    transform: rotate(180deg);
+}
+
+.language-dropdown {
+    position: absolute;
+    right: 0;
+    top: calc(100% + 6px);
+    background-color: var(--light-bg);
+    border: 1px solid var(--light-d-1);
+    border-radius: 8px;
+    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
+    list-style: none;
+    margin: 0;
+    padding: 6px 0;
+    min-width: 160px;
+    z-index: 100;
+}
+
+.language-dropdown li {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 8px 16px;
+    cursor: pointer;
+    font-size: 0.9rem;
+}
+
+.language-dropdown li:hover {
+    background-color: var(--light-d-1);
+}
+
+.language-dropdown li.active {
+    font-weight: bold;
+}
+
+.flag {
+    font-size: 1.1rem;
+}
+</style>