frontend_v2/src/components/BrandModal.astro

---
// 品牌筛选弹窗（仅 markup + 样式）。
// Alpine 状态（modalOpen / modalKeyword / modalLetter / modalResults / modalLoading /
// modalSelected / SPIN_SVG 等）由父级 RunwayLooks 的 showsPage() 提供，本组件渲染在
// .showsroot 的 x-data 作用域内，故可直接引用这些变量，无需 props。
---

<!-- 品牌筛选弹窗：搜索 + A-Z 跳转 + 热门推荐，按需加载，避免一次拉全量 -->
<div class="showsmodal" x-show="modalOpen" x-cloak @keydown.escape.window="closeBrandModal()">
    <div class="showsmodal-mask" @click="closeBrandModal()"></div>
    <div class="showsmodal-panel">
    <header class="showsmodal-head">
        <h3>全部品牌</h3>
        <button class="showsmodal-x" type="button" @click="closeBrandModal()" aria-label="关闭">✕</button>
    </header>
    <div class="showsmodal-search">
        <input
        class="showsmodal-input"
        type="text"
        x-model="modalKeyword"
        @input.debounce.300ms="modalSearch()"
        placeholder="搜索品牌名…"
        autocomplete="off"
        />
        <p class="showsmodal-tip">最多展示 30 条结果，可用搜索或字母筛选缩小范围</p>
    </div>
    <div class="showsmodal-az">
        <button class="az az-hot" type="button" :class="{ active: modalLetter === 'HOT' }" @click="modalPickLetter('HOT')">HOT</button>
        <template x-for="l in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ#'.split('')" :key="l">
        <button class="az" type="button" :class="{ active: modalLetter === l }" @click="modalPickLetter(l)" x-text="l"></button>
        </template>
    </div>
    <div class="showsmodal-body">
        <div class="showsmodal-hint" x-show="!modalKeyword && modalLetter === 'HOT'">热门推荐</div>
        <div class="showsmodal-loading" x-show="modalLoading" x-html="SPIN_SVG"></div>
        <ul class="showsmodal-list">
        <template x-for="b in modalResults" :key="b.id">
            <li>
            <label class="showsmodal-row">
                <input
                type="radio"
                name="modalDesigner"
                :value="b.id"
                x-model="modalSelected"
                :class="{ 'is-checked': modalSelected === b.id }"
                />
                <span class="showsmodal-name" x-text="b.display || b.name"></span>
            </label>
            </li>
        </template>
        <li class="showsmodal-empty" x-show="!modalLoading && modalResults.length === 0">未找到匹配的品牌</li>
        </ul>
    </div>
    <footer class="showsmodal-foot">
        <!-- <span class="showsmodal-counter" x-text="`已选 ${modalSelected.length} / 最多 5 个`"></span> -->
        <button class="showsmodal-ok" type="button" @click="confirmBrandModal()">确定</button>
    </footer>
    </div>
</div>

<style>
  @reference "tailwindcss";
  [x-cloak] { display: none !important; }

  /* ===== 品牌筛选弹窗（语言切换器风格：无 mask、顶部小箭头、干净白底列表） ===== */
  .showsmodal {
    @apply fixed inset-0 z-[60] flex items-start justify-center pt-[14vh] pointer-events-none;
  }
  .showsmodal-mask {
    @apply absolute inset-0 pointer-events-auto cursor-default;
    background: rgba(0, 0, 0, 0.4);
  }
  .showsmodal-panel {
    @apply relative w-full max-w-[680px] max-h-[72vh] bg-white flex flex-col border border-black/10 pointer-events-auto;
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.15);
  }
  /* 顶部小三角箭头（语言切换器同款：白底 + 浅边框） */
  .showsmodal-panel::before {
    content: "";
    position: absolute;
    top: -5px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: white;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    border-left: 1px solid rgba(0, 0, 0, 0.1);
    transform: translateX(-50%) rotate(45deg);
  }
  .showsmodal-head {
    @apply flex items-center justify-between px-4 pt-4 pb-2 shrink-0;
  }
  .showsmodal-head h3 {
    @apply m-0 text-[12px] tracking-[0.22em] uppercase font-bold;
  }
  .showsmodal-x {
    @apply appearance-none bg-transparent border-0 w-6 h-6 inline-flex items-center justify-center cursor-pointer text-[14px] leading-none text-[#999] transition-colors hover:text-black;
  }
  .showsmodal-search {
    @apply px-4 pt-1 pb-3 shrink-0;
  }
  .showsmodal-input {
    @apply w-full border border-black/15 px-3 py-2 text-[13px] outline-none bg-[#fafafa] focus:bg-white focus:border-black;
  }
  .showsmodal-tip {
    @apply mt-2 text-[11px] leading-snug text-black/45 font-mono;
  }
  .showsmodal-az {
    @apply flex flex-wrap gap-1 px-4 pb-3 shrink-0;
  }
  .showsmodal-az .az {
    @apply appearance-none bg-white border border-black/10 w-6 h-6 text-[10px] cursor-pointer leading-none font-mono transition-colors hover:bg-black/5;
  }
  .showsmodal-az .az.active {
    @apply bg-black text-white border-black;
  }
  .showsmodal-az .az-hot {
    @apply w-auto px-2 font-sans font-bold tracking-[0.12em] text-[9px];
  }
  .showsmodal-body {
    @apply flex-1 min-h-0 overflow-y-auto px-2 py-1 overscroll-contain;
  }
  .showsmodal-hint {
    @apply text-[10px] tracking-[0.22em] uppercase text-[#999] px-3 py-2;
  }
  .showsmodal-loading {
    @apply flex justify-center py-6 text-[#bdbdbd];
  }
  .showsmodal-list {
    @apply list-none m-0 p-0;
  }
  .showsmodal-row {
    @apply flex items-center gap-2 w-full cursor-pointer px-3 py-2 text-[13px] transition-colors hover:bg-black/5;
  }
  .showsmodal-row input[type="radio"] {
    @apply appearance-none w-4 h-4 border-[1.5px] border-black bg-white cursor-pointer shrink-0 rounded-full;
  }
  .showsmodal-row input[type="radio"].is-checked {
    @apply bg-white border-black;
    background-image: radial-gradient(circle, #000 36%, transparent 40%);
  }
  .showsmodal-name {
    @apply flex-1 truncate;
  }
  .showsmodal-ct {
    @apply text-[#999] text-[10px] ml-auto;
  }
  .showsmodal-empty {
    @apply py-6 text-center text-[#999] text-[13px];
  }
  .showsmodal-foot {
    @apply flex items-center justify-between px-4 py-3 border-t border-black/5 shrink-0 text-[11px] text-[#888];
  }
  .showsmodal-counter {
    @apply tracking-[0.06em];
  }
  .showsmodal-ok {
    @apply appearance-none bg-black text-white border border-black px-4 py-1.5 cursor-pointer text-[12px] tracking-[0.1em] transition-colors hover:bg-black/85;
  }
</style>