/* =========================================================
    DARONG Agent — Grok/GPT-like 3-column UI (Minimal Premium)
    File: /assets/css/agent.css
    ========================================================= */

  /* ========== Design Tokens ========== */
  /* ===== Agent App Reset ===== */
  html, body {
    height: 100%;
  }

  body.agent-app {
    margin: 0;
    font-family: "Inter", "HarmonyOS Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
    background: #fff;
    color: #232323;
  }

  body.agent-app * {
    box-sizing: border-box;
  }

  :root{
    --bg: #ffffff;
    --surface: rgba(255,255,255,.92);
    --surface2: rgba(255,255,255,.78);
    --line: rgba(0,0,0,.08);
    --line2: rgba(0,0,0,.12);

    --text: rgba(0,0,0,.86);
    --muted: rgba(0,0,0,.58);
    --muted2: rgba(0,0,0,.42);

    --shadow: 0 18px 52px rgba(0,0,0,.08);
    --shadow2: 0 12px 32px rgba(0,0,0,.06);

    /* Darong accent (logo palette) */
    --a: #85D8EA;
    --b: #FCD267;

    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 12px;

    --ease: cubic-bezier(.2,.9,.2,1);
  }

  /* ========== Base ========== */
  .agent-app{
    background: var(--bg);
    color: var(--text);
    font-family: "Inter","HarmonyOS Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  }

  *{ box-sizing: border-box; }
  a{ color: inherit; text-decoration: none; }
  button{ font-family: inherit; }

  /* ========== Appbar ========== */
  .appbar{
    position: sticky;
    top: 0;
    z-index: 50;
    height: 64px;
    border-bottom: 1px solid var(--line);
    background: rgba(255,255,255,.82);
    backdrop-filter: blur(14px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
  }

  .brand{
    display: inline-flex;
    align-items: center;
    gap: 10px;
    letter-spacing: .14em;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 650;
    color: var(--text);
  }
  .brand-logo{
    width: 22px;
    height: 22px;
    display: block;
  }

  .appbar-right{
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--muted);
  }

  .appbar-link{
    padding: 8px 10px;
    border-radius: 999px;
    transition: background .18s ease, color .18s ease;
  }
  .appbar-link:hover{
    background: rgba(0,0,0,.04);
    color: rgba(0,0,0,.78);
  }

  .appbar-pill{
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid var(--line2);
    background: rgba(255,255,255,.86);
    transition: transform .14s ease, box-shadow .18s var(--ease), border-color .18s ease;
  }
  .appbar-pill:hover{
    transform: translateY(-1px);
    border-color: rgba(133,216,234,.55);
    box-shadow: 0 12px 26px rgba(133,216,234,.18);
    color: rgba(0,0,0,.78);
  }

  /* ========== Layout ========== */
  .app-layout{
    max-width: 1280px;
    margin: 0 auto;
    padding: 18px;
    display: grid;
    grid-template-columns: 280px minmax(0,1fr) 320px;
    gap: 14px;
  }

  /* subtle global accents */
  .app-layout{
    position: relative;
  }
  .app-layout::before{
    content:"";
    position: absolute;
    inset: -80px;
    background:
      radial-gradient(circle at 12% 0%, rgba(133,216,234,.14), transparent 45%),
      radial-gradient(circle at 90% 0%, rgba(252,210,103,.12), transparent 45%);
    filter: blur(12px);
    opacity: .95;
    pointer-events: none;
    z-index: 0;
  }
  .app-layout > *{ position: relative; z-index: 1; }

  /* ========== Sidebar ========== */
  .sidebar{
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow2);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 64px - 36px);
  }

  .sidebar-top{
    padding: 14px 14px 10px;
    border-bottom: 1px solid var(--line);
  }
  .sidebar-title{
    font-size: 14px;
    font-weight: 650;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
  }
  .sidebar-btn{
    width: 100%;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--line2);
    background: linear-gradient(135deg, rgba(133,216,234,.55), rgba(252,210,103,.45));
    color: rgba(0,0,0,.78);
    font-weight: 650;
    cursor: pointer;
    transition: transform .14s ease, box-shadow .18s var(--ease), opacity .16s ease;
    box-shadow: 0 10px 20px rgba(133,216,234,.16);
  }
  .sidebar-btn:hover{ transform: translateY(-1px); box-shadow: 0 14px 26px rgba(133,216,234,.20); }

  .chat-list{
    padding: 10px;
    display: grid;
    gap: 8px;
    overflow: auto;
    flex: 1;
  }

  .chat-item{
    width: 100%;
    text-align: left;
    border-radius: 14px;
    border: 1px solid rgba(0,0,0,.06);
    background: rgba(255,255,255,.78);
    padding: 10px 10px;
    cursor: pointer;
    display: grid;
    gap: 4px;
    transition: transform .14s ease, box-shadow .18s var(--ease), border-color .18s ease, background .18s ease;
  }
  .chat-item:hover{
    transform: translateY(-1px);
    border-color: rgba(133,216,234,.35);
    box-shadow: 0 12px 26px rgba(0,0,0,.06);
  }
  .chat-item.is-active{
    border-color: rgba(133,216,234,.55);
    background: rgba(133,216,234,.08);
  }

  .chat-item-title{
    font-size: 13px;
    font-weight: 650;
    color: rgba(0,0,0,.78);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .chat-item-meta{
    font-size: 12px;
    color: var(--muted2);
  }

  .sidebar-foot{
    padding: 12px 14px 14px;
    border-top: 1px solid var(--line);
    display: grid;
    gap: 6px;
  }
  .status-row{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(0,0,0,.62);
  }
  .status-dot{
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(82,212,143,1), rgba(10,135,84,1));
    box-shadow: 0 0 10px rgba(10,135,84,.28);
  }
  .small-muted{
    font-size: 12px;
    color: var(--muted2);
  }

  /* ========== Main ========== */
  .main{
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 64px - 36px);
  }

  .main-head{
    padding: 14px 16px 12px;
    border-bottom: 1px solid var(--line);
    background: rgba(255,255,255,.82);
  }
  .main-head-title{
    font-size: 13px;
    font-weight: 650;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: rgba(0,0,0,.62);
    margin-bottom: 6px;
  }
  .main-head-sub{
    font-size: 13px;
    color: var(--muted);
    line-height: 1.55;
  }

  /* thread */
  .thread{
    flex: 1;
    overflow: auto;
    padding: 16px 0;
    scroll-behavior: smooth;
  }

  .msg{
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 12px;
    padding: 10px 16px;
  }

  .avatar{
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.86);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted2);
    font-size: 12px;
    user-select: none;
  }

  .avatar.agent{
    border: none;
    color: rgba(0,0,0,.72);
    background: radial-gradient(circle at 30% 30%, rgba(252,210,103,.95), rgba(133,216,234,.95));
  }

  .bubble{
    max-width: 820px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: rgba(255,255,255,.88);
    padding: 12px 14px;
    line-height: 1.75;
    font-size: 14px;
    color: var(--text);
  }

  /* user bubble */
  .msg.user .bubble{
    background: rgba(133,216,234,.08);
    border-color: rgba(133,216,234,.28);
  }

  /* assistant bubble */
  .msg.agent .bubble{
    border-color: rgba(252,210,103,.22);
  }

  /* tools */
  .msg-tools{
    margin-top: 8px;
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--muted2);
  }
  .tool-btn{
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    color: inherit;
    opacity: .78;
  }
  .tool-btn:hover{ opacity: 1; }

  /* typing */
  .typing{
    display:inline-flex;
    gap: 6px;
    align-items: center;
  }
  .dot{
    width: 6px; height: 6px;
    border-radius: 999px;
    background: rgba(0,0,0,.35);
    animation: bounce 1.1s infinite;
  }
  .dot:nth-child(2){ animation-delay: .15s; }
  .dot:nth-child(3){ animation-delay: .30s; }
  @keyframes bounce{
    0%, 100%{ transform: translateY(0); opacity: .35; }
    40%{ transform: translateY(-4px); opacity: .65; }
  }

  /* composer */
  .composer{
    border-top: 1px solid var(--line);
    background: rgba(255,255,255,.88);
    padding: 12px 12px 10px;
  }

  .composer-inner{
    display: grid;
    grid-template-columns: 1fr 88px;
    gap: 10px;
    align-items: end;
    padding: 10px;
    border-radius: 16px;
    border: 1px solid rgba(0,0,0,.12);
    background: rgba(255,255,255,.86);
    backdrop-filter: blur(10px);
  }

  #chatText{
    width: 100%;
    resize: none;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    padding: 6px 6px;
    min-height: 20px;
    max-height: 180px;
  }

  .send-btn{
    height: 40px;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,.12);
    cursor: pointer;
    font-size: 14px;
    font-weight: 650;
    color: rgba(0,0,0,.78);
    background: linear-gradient(135deg, rgba(133,216,234,.55), rgba(252,210,103,.45));
    transition: transform .14s ease, opacity .14s ease, box-shadow .18s var(--ease);
    box-shadow: 0 10px 20px rgba(133,216,234,.16);
  }
  .send-btn:hover{ transform: translateY(-1px); box-shadow: 0 14px 26px rgba(133,216,234,.20); }
  .send-btn:disabled{ opacity: .55; cursor: not-allowed; transform:none; }

  /* chips */
  .chips{
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 2px 0;
  }
  .chip{
    border-radius: 999px;
    border: 1px solid rgba(0,0,0,.10);
    background: rgba(255,255,255,.82);
    padding: 8px 10px;
    font-size: 12px;
    color: rgba(0,0,0,.68);
    cursor: pointer;
    transition: transform .12s ease, border-color .18s ease, box-shadow .18s var(--ease);
  }
  .chip:hover{
    transform: translateY(-1px);
    border-color: rgba(133,216,234,.45);
    box-shadow: 0 10px 22px rgba(0,0,0,.06);
  }

  /* hint */
  .composer-hint{
    margin-top: 8px;
    font-size: 12px;
    color: var(--muted2);
    padding: 0 4px;
  }

  /* ========== Right Panel ========== */
  .panel{
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow2);
    overflow: hidden;
    min-height: calc(100vh - 64px - 36px);
    padding: 12px;
    display: grid;
    gap: 12px;
    align-content: start;
  }

  .panel-card{
    border: 1px solid rgba(0,0,0,.06);
    border-radius: 16px;
    background: rgba(255,255,255,.82);
    padding: 12px 12px;
  }

  .panel-kicker{
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--muted2);
    margin-bottom: 8px;
  }
  .panel-title{
    font-size: 14px;
    font-weight: 650;
    margin: 0 0 6px;
  }
  .panel-desc{
    font-size: 13px;
    line-height: 1.65;
    color: var(--muted);
  }

  .panel-list{
    display: grid;
    gap: 10px;
  }
  .panel-row{
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    align-items: center;
  }
  .pill{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 26px;
    padding: 0 10px;
    border-radius: 999px;
    border: 1px solid rgba(0,0,0,.10);
    font-size: 12px;
    background: rgba(255,255,255,.86);
    color: rgba(0,0,0,.72);
  }
  .row-text{
    font-size: 13px;
    color: var(--muted);
  }

  /* ========== Responsive ========== */
  @media (max-width: 1100px){
    .app-layout{ grid-template-columns: 260px minmax(0,1fr); }
    .panel{ display: none; }
  }
  @media (max-width: 820px){
    .app-layout{ grid-template-columns: 1fr; }
    .sidebar{ display: none; }
    .main{ min-height: calc(100vh - 64px - 36px); }
  }
  @media (max-width: 767.98px){
    .appbar{ height: 58px; padding: 0 12px; }
    .composer-inner{ grid-template-columns: 1fr 78px; }
    .msg{ grid-template-columns: 34px 1fr; padding: 10px 12px; }
  }
  /* Role switch */
  .agent-switch{
    display: grid;
    gap: 6px;
    margin: 10px 0 12px;
  }
  .agent-switch-label{
    font-size: 12px;
    color: var(--muted2);
  }
  .agent-switch-select{
    height: 38px;
    border-radius: 12px;
    border: 1px solid var(--line2);
    background: rgba(255,255,255,.86);
    padding: 0 10px;
    outline: none;
  }
  .agent-switch-select:focus{
    border-color: rgba(133,216,234,.55);
    box-shadow: 0 0 0 4px rgba(133,216,234,.16);
  }

  /* chat item delete button (optional) */
  .chat-item-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
  }
  .chat-item-x{
    border:none;
    background:transparent;
    color: var(--muted2);
    cursor:pointer;
    padding: 2px 6px;
    border-radius: 8px;
    opacity:.65;
  }
  .chat-item-x:hover{ opacity:1; background: rgba(0,0,0,.04); }
  /* ===== Agent Scope Shield (keep main.css but prevent leaking) ===== */
  body.agent-app ul, body.agent-app ol { list-style: none; margin: 0; padding: 0; }
  body.agent-app a { color: inherit; text-decoration: none; }
  body.agent-app button { font-family: inherit; }
  body.agent-app main, body.agent-app section, body.agent-app aside { display: block; }
  /* ===== Force 3-column app layout (must be LAST) ===== */
  body.agent-app .app-layout{
    display: grid !important;
    grid-template-columns: 280px minmax(0, 1fr) 320px !important;
    gap: 14px !important;
    max-width: 1280px !important;
    margin: 0 auto !important;
    padding: 18px !important;
  }

  body.agent-app .sidebar,
  body.agent-app .main,
  body.agent-app .panel{
    visibility: visible !important;
    opacity: 1 !important;
    min-width: 0 !important;
  }

  body.agent-app .main{ display: flex !important; flex-direction: column !important; }
  body.agent-app .panel{ display: grid !important; }

  @media (max-width: 1100px){
    body.agent-app .app-layout{ grid-template-columns: 260px minmax(0,1fr) !important; }
    body.agent-app .panel{ display:none !important; }
  }
  @media (max-width: 820px){
    body.agent-app .app-layout{ grid-template-columns: 1fr !important; }
    body.agent-app .sidebar{ display:none !important; }
    body.agent-app .panel{ display:none !important; }
  }
  /* ===========================
    Agent role switch hardening
    Paste at END of agent.css
    =========================== */

  body.agent-app .agent-scope,
  body.agent-app .agent-scope *{
    box-sizing: border-box !important;
  }

  /* 防止主站对 label/select 的怪样式 */
  body.agent-app .agent-scope label{
    display: block !important;
    margin: 0 0 6px !important;
    padding: 0 !important;
    font-size: 12px !important;
    line-height: 1.2 !important;
    color: rgba(35,35,35,.68) !important;
    letter-spacing: .02em !important;
  }

  /* 强制 select 变成统一的胶囊输入 */
  body.agent-app .agent-scope select{
    width: 100% !important;
    max-width: 100% !important;
    height: 38px !important;
    border-radius: 12px !important;

    border: 1px solid rgba(0,0,0,.10) !important;
    background: rgba(255,255,255,.86) !important;

    padding: 0 10px !important;
    font-size: 13px !important;
    line-height: 38px !important;
    color: rgba(35,35,35,.92) !important;

    outline: none !important;
    appearance: none !important;
    -webkit-appearance: none !important;
  }

  /* focus 的高级感 */
  body.agent-app .agent-scope select:focus{
    border-color: rgba(133,216,234,.55) !important;
    box-shadow: 0 0 0 4px rgba(133,216,234,.16) !important;
  }

  /* 角色模块与按钮间距 */
  body.agent-app .agent-switch{
    margin: 10px 0 12px !important;
  }

  /* 如果主站给 select 加了奇怪的背景图/箭头，这里补一个干净箭头 */
  body.agent-app .agent-switch{
    position: relative;
  }
  body.agent-app .agent-switch::after{
    content: "▾";
    position: absolute;
    right: 12px;
    top: 30px; /* label(约16px)+间距(6px)+微调 */
    font-size: 12px;
    opacity: .55;
    pointer-events: none;
  }
  body.agent-app .sidebar-top{
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
  }

  body.agent-app .sidebar-btn{
    width: 100% !important;
  }
  .app-layout {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px;

    display: grid;
    grid-template-columns: 280px minmax(0, 1fr) 320px;
    gap: 16px;
  }

  /* sidebar */
  .sidebar {
    background: #fff;
    border-radius: 18px;
    border: 1px solid rgba(0,0,0,0.06);
  }

  /* main chat */
  .main {
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 80px);
    background: #fff;
    border-radius: 18px;
    border: 1px solid rgba(0,0,0,0.06);
    overflow: hidden;
  }

  /* right panel */
  .panel {
    background: #fff;
    border-radius: 18px;
    border: 1px solid rgba(0,0,0,0.06);
  }
  /* ===== Role switch (safe, scoped) ===== */
  body.agent-app .agent-switch{
    display: grid;
    gap: 6px;
    margin: 10px 0 12px;
  }
  body.agent-app .agent-switch-label{
    font-size: 12px;
    opacity: .72;
  }
  body.agent-app .agent-switch-select{
    width: 100%;
    height: 38px;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,.10);
    background: rgba(255,255,255,.86);
    padding: 0 10px;
    font-size: 13px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
  }
  body.agent-app .agent-switch-select:focus{
    border-color: rgba(133,216,234,.55);
    box-shadow: 0 0 0 4px rgba(133,216,234,.16);
  }
  /* ===== Sidebar collapse ===== */
  body.agent-app .app-layout{
    --sidebar-w: 300px;
    --panel-w: 320px;
  }

  /* 默认三栏 */
  body.agent-app .app-layout{
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--panel-w);
    gap: 16px;
  }

  /* 折叠态：侧栏变窄，只保留图标/提示 */
  body.agent-app.is-sidebar-collapsed .app-layout{
    grid-template-columns: 72px minmax(0, 1fr) var(--panel-w);
  }

  body.agent-app.is-sidebar-collapsed .sidebar{
    overflow: hidden;
  }

  /* 折叠时隐藏文字/列表，只保留顶部按钮 */
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-title,
  body.agent-app.is-sidebar-collapsed .sidebar .agent-switch,
  body.agent-app.is-sidebar-collapsed .sidebar .chat-list,
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-foot{
    display: none !important;
  }

  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-top{
    padding: 10px !important;
  }

  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-btn{
    width: 100% !important;
    padding: 10px 0 !important;
    border-radius: 14px !important;
  }

  /* 顶部按钮样式 */
  .appbar-icon,
  .sidebar-icon{
    border: 1px solid rgba(0,0,0,.10);
    background: rgba(255,255,255,.8);
    border-radius: 999px;
    height: 34px;
    min-width: 34px;
    padding: 0 10px;
    cursor: pointer;
  }
  .appbar-icon:hover,
  .sidebar-icon:hover{
    border-color: rgba(133,216,234,.55);
    box-shadow: 0 10px 22px rgba(133,216,234,.16);
  }

  /* 手机端：侧栏默认抽屉（可选，防挤压） */
  @media (max-width: 960px){
    body.agent-app .app-layout{
      grid-template-columns: 1fr; /* 先让主区占满 */
    }
    body.agent-app .sidebar{
      position: fixed;
      top: 64px; /* 你的 appbar 高度按实际调 */
      left: 0;
      bottom: 0;
      width: min(86vw, 320px);
      transform: translateX(-105%);
      transition: transform .28s ease;
      z-index: 60;
    }
    body.agent-app.is-sidebar-open .sidebar{
      transform: translateX(0);
    }
  }
  /* Chat row with delete */
  .chat-row{
    position: relative;
    display: grid;
    grid-template-columns: 1fr 28px;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
  }
  .chat-row .chat-item{ width: 100%; }
  .chat-del{
    height: 28px;
    width: 28px;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,.08);
    background: rgba(255,255,255,.75);
    cursor: pointer;
    opacity: .55;
    transition: opacity .15s ease, transform .15s ease, box-shadow .15s ease;
  }
  .chat-row:hover .chat-del{ opacity: 1; }
  .chat-del:hover{
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(0,0,0,.06);
    border-color: rgba(0,0,0,.14);
  }

  /* Sidebar collapse + mobile drawer */
  body.agent-app .app-layout{
    --sidebar-w: 300px;
    --panel-w: 320px;
  }
  body.agent-app .app-layout{
    display: grid;
    grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--panel-w);
    gap: 16px;
  }
  body.agent-app.is-sidebar-collapsed .app-layout{
    grid-template-columns: 72px minmax(0, 1fr) var(--panel-w);
  }
  body.agent-app.is-sidebar-collapsed .sidebar{
    overflow: hidden;
  }
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-title,
  body.agent-app.is-sidebar-collapsed .sidebar .agent-switch,
  body.agent-app.is-sidebar-collapsed .sidebar .chat-list,
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-foot{
    display: none !important;
  }
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-top{
    padding: 10px !important;
  }
  body.agent-app.is-sidebar-collapsed .sidebar .sidebar-btn{
    width: 100% !important;
    padding: 10px 0 !important;
    border-radius: 14px !important;
  }
  @media (max-width: 960px){
    body.agent-app .app-layout{
      grid-template-columns: 1fr;
    }
    body.agent-app .sidebar{
      position: fixed;
      top: 64px;
      left: 0;
      bottom: 0;
      width: min(86vw, 320px);
      transform: translateX(-105%);
      transition: transform .28s ease;
      z-index: 60;
    }
    body.agent-app.is-sidebar-open .sidebar{
      transform: translateX(0);
    }
  }
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --line:rgba(0,0,0,.08);

  --brand-blue:#85D8EA;
  --brand-gold:#FCD267;

  --r:18px;
  --shadow: 0 18px 60px rgba(0,0,0,.06);
  --ease:cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","Inter",system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 18% 18%, rgba(133,216,234,.28), transparent 55%),
    radial-gradient(circle at 82% 18%, rgba(252,210,103,.22), transparent 50%),
    var(--bg);
}

/* 顶部 */
.appbar{
  position:sticky; top:0; z-index:50;
  height:64px;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 18px;
  background:rgba(255,255,255,.84);
  backdrop-filter: blur(14px);
  border-bottom:1px solid var(--line);
}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.brand-logo{width:26px;height:26px;display:block}
.brand-name{font-weight:700;letter-spacing:.16em;font-size:12px;text-transform:uppercase;opacity:.9}

.appbar-right{display:flex;align-items:center;gap:12px}
.appbar-link{color:var(--muted);text-decoration:none;font-size:13px}
.appbar-pill{
  text-decoration:none;
  font-size:13px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.7);
  color:var(--text);
}

.appbar-icon{
  width:34px;height:34px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.7);
  cursor:pointer;
}

/* 三栏布局 */
.app-layout{
  width:min(1280px, calc(100% - 64px));
  margin:22px auto;
  display:grid;
  grid-template-columns: 320px minmax(0, 1fr) 320px;
  gap:18px;
  align-items:stretch;
}

/* 左栏 */
.sidebar{
  background:rgba(255,255,255,.75);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  min-height: calc(100vh - 120px);
}

.sidebar-top{padding:16px 16px 12px;border-bottom:1px solid var(--line)}
.sidebar-title{font-weight:800;font-size:14px;margin-bottom:10px}

.agent-switch-label{font-size:12px;color:var(--muted);margin-bottom:6px}
.agent-switch-select{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.8);
  outline:none;
}

.sidebar-btn{
  margin-top:10px;
  width:100%;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid rgba(133,216,234,.45);
  background:linear-gradient(90deg, rgba(133,216,234,.35), rgba(252,210,103,.26));
  cursor:pointer;
  font-weight:650;
}

.chat-list{padding:10px 10px 12px;overflow:auto;flex:1}

.chat-row{
  position:relative;
  display:flex;
  align-items:stretch;
  gap:8px;
  margin:8px 0;
}

.chat-item{
  flex:1;
  text-align:left;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.8);
  cursor:pointer;
  display:flex;
  flex-direction:column;
  gap:4px;
}

.chat-row.is-active .chat-item{
  border-color: rgba(133,216,234,.65);
  box-shadow: 0 12px 30px rgba(133,216,234,.18);
}

.chat-item-title{font-size:13px;font-weight:700}
.chat-item-meta{font-size:11px;color:var(--muted)}

.chat-del{
  width:34px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.75);
  cursor:pointer;
}

.sidebar-foot{
  padding:12px 14px;
  border-top:1px solid var(--line);
}
.status-row{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.status-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.12)}
.small-muted{font-size:12px;color:var(--muted);margin-top:6px}

/* 中栏 */
.main{
  background:rgba(255,255,255,.72);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  min-height: calc(100vh - 120px);
}

.main-head{padding:16px 18px;border-bottom:1px solid var(--line)}
.main-head-title{font-weight:850;font-size:14px}
.main-head-sub{margin-top:4px;font-size:12px;color:var(--muted)}

.thread{
  padding:18px;
  overflow:auto;
  flex:1;
}

.msg{display:flex;gap:10px;margin:12px 0}
.avatar{
  width:32px;height:32px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;
  border:1px solid var(--line);
  background:#fff;
}
.avatar.agent{
  background: radial-gradient(circle at 30% 30%, rgba(252,210,103,.95), rgba(133,216,234,.95));
  color:#0b2a33;
  border:none;
}
.avatar.user{color:#111}

.bubble{
  max-width: 760px;
  padding:12px 14px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.9);
  line-height:1.7;
  font-size:13px;
  white-space:pre-wrap;
}
.msg.user{flex-direction:row-reverse}
.msg.user .bubble{
  background: rgba(133,216,234,.16);
  border-color: rgba(133,216,234,.35);
}

.composer{
  padding:12px 14px;
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.78);
}
.composer-inner{display:flex;gap:10px;align-items:flex-end}
#chatText{
  flex:1;
  min-height:44px;
  max-height:160px;
  resize:none;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--line);
  outline:none;
  background:rgba(255,255,255,.85);
}
.send-btn{
  height:44px;
  padding:0 16px;
  border-radius:14px;
  border:1px solid rgba(133,216,234,.45);
  background: linear-gradient(90deg, rgba(133,216,234,.40), rgba(252,210,103,.30));
  cursor:pointer;
  font-weight:750;
}
.send-btn:disabled{opacity:.6;cursor:not-allowed}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.chip{
  border:1px solid var(--line);
  background:rgba(255,255,255,.78);
  border-radius:999px;
  padding:8px 10px;
  font-size:12px;
  cursor:pointer;
}
.composer-hint{margin-top:8px;font-size:12px;color:var(--muted)}

/* 右栏 */
.panel{
  background:rgba(255,255,255,.70);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  overflow:hidden;
  min-height: calc(100vh - 120px);
  padding:14px;
  display:flex;
  flex-direction:column;
  gap:12px;
}

.panel-card{
  background:rgba(255,255,255,.82);
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px;
}
.panel-kicker{font-size:11px;letter-spacing:.22em;color:var(--muted)}
.panel-title{margin-top:6px;font-weight:850}
.panel-desc{margin-top:6px;font-size:12px;color:var(--muted);line-height:1.7}
.panel-row{display:flex;gap:10px;align-items:center;margin-top:10px}
.pill{
  font-size:11px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(133,216,234,.35);
  background:rgba(133,216,234,.12);
}
.row-text{font-size:12px;color:var(--muted)}

/* 折叠侧栏：桌面端 */
body.is-sidebar-collapsed .app-layout{
  grid-template-columns: 84px minmax(0, 1fr) 320px;
}
body.is-sidebar-collapsed .sidebar-title,
body.is-sidebar-collapsed .agent-switch,
body.is-sidebar-collapsed .sidebar-btn,
body.is-sidebar-collapsed .sidebar-foot,
body.is-sidebar-collapsed .chat-item-title,
body.is-sidebar-collapsed .chat-item-meta{
  display:none;
}
body.is-sidebar-collapsed .chat-list{padding:10px}
body.is-sidebar-collapsed .chat-item{justify-content:center;align-items:center}

/* 响应式 */
@media (max-width: 1060px){
  .app-layout{grid-template-columns: 320px minmax(0,1fr); }
  .panel{display:none;}
}
@media (max-width: 860px){
  .app-layout{
    width: calc(100% - 24px);
    grid-template-columns: minmax(0,1fr);
  }
  .sidebar{
    position: fixed;
    left: 12px;
    top: 76px;
    bottom: 12px;
    width: 320px;
    transform: translateX(-110%);
    transition: transform .28s var(--ease);
    z-index: 60;
  }
  body.is-sidebar-open .sidebar{ transform: translateX(0); }
}