feat: enhance layout components, data layer and global styles

- SidebarRail, TopBar, FilterBar: improved navigation and filtering UX

- metrics.js, requests.js: expanded data with multi-range trend series

- composables: enhanced useChat, useNavigation, useRequests

- global.css: refined design tokens and utility classes

- Add DocFilterBar component and LoginView page

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/components/layout/TopBar.vue

@@ -1,56 +1,163 @@
 <template>
   <header class="topbar">
-    <div>
-      <div class="eyebrow">Global finance operations</div>
+    <div class="title-group">
+      <div class="eyebrow">Smart Expense Operations</div>
       <h1>{{ currentView.title }}</h1>
       <p>{{ currentView.desc }}</p>
     </div>
+
     <div class="top-actions">
-      <label class="search">
-        <span v-html="searchIcon"></span>
-        <input :value="search" type="search" placeholder="搜索申请人、单号、费用类型" @input="emit('update:search', $event.target.value)" />
-      </label>
-      <button class="btn" type="button" @click="emit('batchApprove')">
-        <span v-html="checkIcon"></span>
-        批量通过
-      </button>
-      <button class="btn primary" type="button" @click="emit('openChat')">
-        <span v-html="messageIcon"></span>
-        合规对话
-      </button>
+      <span class="search-wrap">
+        <i class="pi pi-search search-icon"></i>
+        <input :value="search" type="search" :placeholder="isChat ? '搜索单号、申请人、目的地' : '搜索申请人、单号、费用类型'" @input="emit('update:search', $event.target.value)" />
+      </span>
+
+      <div v-if="!isChat" class="date-chip">
+        <i class="pi pi-calendar"></i>
+        <span>2024-07-06 ~ 2024-07-12</span>
+      </div>
+
+      <template v-if="isChat">
+        <button class="top-btn primary" type="button" @click="emit('newApplication')">
+          <i class="pi pi-plus"></i>
+          <span>新建出差申请</span>
+        </button>
+      </template>
+      <template v-else>
+        <button class="top-btn primary" type="button" @click="emit('openChat')">
+          <i class="pi pi-sparkles"></i>
+          <span>AI 助手</span>
+        </button>
+      </template>
     </div>
   </header>
 </template>
 
 <script setup>
-import { icons } from '../../data/icons.js'
+import { computed } from 'vue'
 
-defineProps({
+const props = defineProps({
   currentView: { type: Object, required: true },
-  search: { type: String, default: '' }
+  search: { type: String, default: '' },
+  activeView: { type: String, default: '' }
 })
 
-const emit = defineEmits(['update:search', 'batchApprove', 'openChat'])
+const emit = defineEmits(['update:search', 'batchApprove', 'openChat', 'newApplication'])
 
-const searchIcon = icons.search
-const checkIcon = icons.check
-const messageIcon = icons.message
+const isChat = computed(() => props.activeView === 'chat')
 </script>
 
 <style scoped>
 .topbar {
   display: flex;
+  align-items: flex-start;
   justify-content: space-between;
   gap: 24px;
-  padding: 22px 28px;
-  border-bottom: 1px solid var(--line);
-  background: rgba(255,255,255,.9);
-  backdrop-filter: blur(14px);
+  padding: 16px;
+  background: #fff;
+}
+
+.title-group {
+  min-width: 0;
+}
+
+.topbar p {
+  margin-top: 4px;
+  max-width: 720px;
+  color: var(--muted);
+  font-size: 14px;
+  line-height: 1.45;
+}
+
+.top-actions {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 16px;
+  flex-wrap: wrap;
+}
+
+.search-wrap {
+  position: relative;
+  width: 256px;
+}
+
+.search-icon {
+  position: absolute;
+  left: 13px;
+  top: 50%;
+  transform: translateY(-50%);
+  color: var(--muted);
+  font-size: 14px;
+}
+
+.search-wrap input {
+  width: 100%;
+  height: 40px;
+  padding: 0 14px 0 38px;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  font-size: 14px;
+  transition: border-color 160ms ease, box-shadow 160ms ease;
+}
+
+.search-wrap input:focus {
+  border-color: #10b981;
+  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.16);
+  outline: none;
+}
+
+.date-chip {
+  height: 40px;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 32px 0 12px;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  background: #fff;
+  color: var(--text);
+  font-size: 14px;
+  font-weight: 400;
+}
+
+.date-chip .pi {
+  color: #94a3b8;
+}
+
+.top-btn {
+  height: 40px;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 16px;
+  border: 0;
+  border-radius: 6px;
+  font-size: 14px;
+  font-weight: 500;
+  transition: background 160ms ease;
+}
+
+.top-btn.primary {
+  background: var(--primary);
+  color: #fff;
+}
+
+.top-btn.primary:hover {
+  background: #0ea672;
+}
+
+@media (max-width: 760px) {
+  .topbar {
+    flex-direction: column;
+    align-items: stretch;
+    padding: 18px 16px;
+  }
+
+  .top-actions,
+  .search-wrap,
+  .date-chip {
+    width: 100%;
+  }
 }
-.topbar p { margin-top: 6px; color: var(--muted); font-size: 13px; }
-.top-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }
-.search { position: relative; min-width: 300px; }
-.search span { position: absolute; left: 13px; top: 50%; width: 18px; height: 18px; transform: translateY(-50%); color: var(--muted); }
-.search span svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }
-.search input { width: 100%; height: 42px; padding: 0 14px 0 40px; border: 1px solid var(--line); border-radius: var(--radius); }
 </style>