From 5c0ba37eda80d39e6ceca59bb1d5f4942f858995 Mon Sep 17 00:00:00 2001
From: "Somhairle H. Marisol" <muqiu-han@outlook.com>
Date: Thu, 17 Sep 2026 14:32:37 +0800
Subject: chore: establish Strategy Lab source baseline (development, not
 release)

---
 frontend/src/components/Modal.svelte | 63 ++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 frontend/src/components/Modal.svelte

(limited to 'frontend/src/components/Modal.svelte')

diff --git a/frontend/src/components/Modal.svelte b/frontend/src/components/Modal.svelte
new file mode 100644
index 0000000..c9f334c
--- /dev/null
+++ b/frontend/src/components/Modal.svelte
@@ -0,0 +1,63 @@
+<script lang="ts">
+  import type { Snippet } from 'svelte';
+
+  interface Props {
+    title: string;
+    onClose: () => void;
+    wide?: boolean;
+    children?: Snippet;
+  }
+  let { title, onClose, wide = false, children }: Props = $props();
+
+  function onBackdrop(e: MouseEvent) {
+    if (e.target === e.currentTarget) onClose();
+  }
+
+  function onKeydown(e: KeyboardEvent) {
+    if (e.key === 'Escape') onClose();
+  }
+
+  let container: HTMLDivElement;
+  $effect(() => {
+    container?.focus();
+  });
+</script>
+
+<div
+  class="overlay"
+  onclick={onBackdrop}
+  role="presentation"
+  onkeydown={onKeydown}
+  tabindex="-1"
+  bind:this={container}
+>
+  <div class="dialog card" role="dialog" aria-modal="true" aria-label={title}>
+    <div class="spread">
+      <h2>{title}</h2>
+      <button class="btn ghost" onclick={onClose} aria-label="关闭">✕</button>
+    </div>
+    <div class="content">
+      {@render children?.()}
+    </div>
+  </div>
+</div>
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(15, 30, 35, 0.35);
+    display: grid;
+    place-items: center;
+    z-index: 50;
+    padding: 1rem;
+  }
+  .dialog {
+    width: min(760px, 100%);
+    max-height: 88vh;
+    overflow: auto;
+    padding: 1.1rem 1.2rem;
+  }
+
+  .content { margin-top: 0.6rem; }
+</style>
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