:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --panel: #111118;
  --panel2: #161622;
  --line: #1e1e2e;
  --line2: #2a2a3a;
  --text: #e2e8f0;
  --muted: #64748b;
  --soft: #1a1a28;
  --accent: #3b82f6;
  --accent2: #2563eb;
  --green: #22c55e;
  --green-bg: #0a2614;
  --red: #ef4444;
  --red-bg: #2a0f0f;
  --yellow: #f59e0b;
  --purple: #a855f7;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}

*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Microsoft YaHei",sans-serif}
button,input,textarea{font:inherit}
button{cursor:pointer}
h1,h2,p{margin:0}

/* ── Layout ─────────────────────────────────── */
.app-shell{display:grid;grid-template-columns:280px minmax(0,1fr) 260px;height:100vh;gap:0}

.sidebar{
  display:flex;flex-direction:column;gap:0;
  background:var(--panel);border-right:1px solid var(--line);
  min-height:0;overflow:hidden;
}

.sidebar-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 16px 12px;
}
.sidebar-header h1{font-size:18px;font-weight:800}

.badge{border-radius:20px;padding:4px 10px;font-size:11px;font-weight:700;white-space:nowrap}
.badge-on{background:var(--green-bg);color:var(--green)}
.badge-off{background:var(--red-bg);color:var(--red)}

/* ── Filter Tabs ────────────────────────────── */
.filter-tabs{display:flex;gap:0;padding:0 12px 8px;border-bottom:1px solid var(--line)}
.filter-tab{
  flex:1;padding:8px 0;border:none;border-radius:0;
  background:transparent;color:var(--muted);
  font-size:13px;font-weight:600;
  border-bottom:2px solid transparent;
  transition:all .15s;
}
.filter-tab:hover{color:var(--text)}
.filter-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
#notifyToggle{flex:none;width:36px;font-size:16px;padding:6px 0;border-bottom:none;cursor:pointer}

/* ── Search ─────────────────────────────────── */
.search-bar{padding:8px 12px}
.search-bar input{
  width:100%;height:36px;padding:0 12px;font-size:13px;
  border:1px solid var(--line2);border-radius:8px;
  background:var(--panel2);color:var(--text);outline:none;
}
.search-bar input:focus{border-color:var(--accent)}
.search-bar input::placeholder{color:var(--muted);font-size:12px}

/* ── Room / Conversation List ───────────────── */
.room-tree{flex:1;overflow:auto;min-height:0;padding:4px 8px}
.room-tree::-webkit-scrollbar{width:4px}
.room-tree::-webkit-scrollbar-thumb{background:var(--line2);border-radius:4px}

.conv-item{
  display:flex;align-items:center;gap:12px;
  padding:10px 12px;margin-bottom:2px;
  border-radius:10px;cursor:pointer;
  transition:background .15s;
}
.conv-item:hover{background:var(--soft)}
.conv-item.active{background:rgba(59,130,246,0.1)}

.conv-avatar{
  width:42px;height:42px;border-radius:50%;
  background:var(--purple);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;flex-shrink:0;
  overflow:hidden;
}
.conv-avatar img{width:100%;height:100%;object-fit:cover;}
.conv-item.is-c2c .conv-avatar{background:#6366f1}
.conv-item.is-group .conv-avatar{background:#0ea5e9}

.conv-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.conv-top{display:flex;align-items:center;gap:8px}
.conv-name{font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.conv-time{font-size:11px;color:var(--muted);flex-shrink:0}
.conv-bottom{display:flex;align-items:center;gap:8px}
.conv-preview{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.conv-unread{
  background:var(--red);color:#fff;font-size:10px;font-weight:bold;
  padding:2px 6px;border-radius:10px;flex-shrink:0;min-width:18px;text-align:center;
}

/* ── Group Headers ─────────────────────────── */
.group-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 14px 4px;margin-top:4px;
  font-size:12px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:0.5px;
  user-select:none;
}

.sidebar-footer{padding:8px 12px;border-top:1px solid var(--line)}
.sidebar-footer-btn{
  width:100%;padding:10px;border:none;border-radius:8px;
  background:linear-gradient(135deg,#1e293b,#1a1a2e);color:var(--accent);
  font-size:13px;font-weight:600;
  transition:all .2s;border:1px solid var(--line2);
}
.sidebar-footer-btn:hover{background:rgba(59,130,246,0.15);border-color:var(--accent);}
#broadcastBtn{color:#f59e0b;border-color:rgba(245,158,11,0.3);}
#broadcastBtn:hover{background:rgba(245,158,11,0.12);border-color:#f59e0b;}
#autoReplyBtn{color:#22c55e;border-color:rgba(34,197,94,0.3);}
#autoReplyBtn:hover{background:rgba(34,197,94,0.12);border-color:#22c55e;}

/* ── Chat Main ──────────────────────────────── */
.chat-main{display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;background:var(--bg);min-width:0;min-height:0}

.chat-header{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  min-height:48px;padding:12px 20px;
  border-bottom:1px solid var(--line);background:var(--panel);
}
.chat-header h2{font-size:15px;font-weight:700}
.header-avatar{width:38px;height:38px;border-radius:50%;overflow:hidden;flex-shrink:0;background:#6366f1;}
.header-avatar img{width:100%;height:100%;object-fit:cover;}
#currentMeta{margin-top:2px;color:var(--muted);font-size:12px}
.text-button{min-width:56px;height:32px;border:none;border-radius:6px;background:var(--panel2);color:var(--accent);font-size:13px;font-weight:600}
.text-button:hover{background:var(--soft)}

.chat-body{display:flex;overflow:hidden;min-height:0}
.message-list{flex:1;overflow:auto;min-height:0;padding:16px 20px}
.message-list::-webkit-scrollbar{width:4px}
.message-list::-webkit-scrollbar-thumb{background:var(--line2);border-radius:4px}

/* ── Messages ───────────────────────────────── */
.message-row{display:flex;gap:10px;max-width:720px;margin-bottom:14px}
.message-row.outbound{margin-left:auto;flex-direction:row-reverse}

.avatar{
  display:grid;place-items:center;width:36px;height:36px;
  border-radius:50%;background:var(--purple);color:#fff;
  font-size:12px;font-weight:900;flex:0 0 auto;
  overflow:hidden;
}
.avatar img{width:100%;height:100%;object-fit:cover;}
.message-row.outbound .avatar{background:var(--accent)}

.bubble-wrap{min-width:0}
.message-meta{display:flex;align-items:baseline;gap:6px;margin-bottom:4px;color:var(--muted);font-size:11px}
.message-row.outbound .message-meta{justify-content:flex-end}
.sender{color:var(--text);font-size:13px;font-weight:700}

.bubble{
  width:fit-content;max-width:min(580px,100%);
  border:1px solid var(--line);border-radius:12px;
  background:var(--panel);padding:10px 14px;
  line-height:1.6;word-break:break-word;white-space:pre-wrap;font-size:14px;
}
.message-row.outbound .bubble{
  margin-left:auto;border-color:rgba(59,130,246,0.2);background:rgba(59,130,246,0.08);
}

.status{color:var(--yellow);font-size:11px}
.status.sent{color:var(--green)}
.status.failed{color:var(--red)}

/* ── Header Actions ─────────────────────────── */
.header-actions{display:flex;gap:8px;align-items:center}
.header-call-btn{
  height:32px;padding:0 12px;border:1px solid var(--line2);border-radius:6px;
  background:var(--panel2);color:var(--text);font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;gap:4px;white-space:nowrap;
}
.header-call-btn:hover{background:var(--soft)}
.header-call-btn.call-voice{color:#22c55e;border-color:rgba(34,197,94,0.3)}
.header-call-btn.call-video{color:#3b82f6;border-color:rgba(59,130,246,0.3)}

/* ── Composer ───────────────────────────────── */
.composer{
  display:flex;flex-direction:column;gap:0;
  border-top:1px solid var(--line);background:var(--panel);
}

input,textarea{
  width:100%;border:1px solid var(--line2);border-radius:8px;
  background:var(--panel2);color:var(--text);outline:none;transition:border-color .15s;
}
input{height:36px;padding:0 10px;font-size:13px}
textarea{resize:none;min-height:80px;max-height:160px;padding:10px 14px;font-size:14px;line-height:1.5;border:none;border-radius:0;background:transparent}
input:focus,textarea:focus{border-color:var(--accent)}
.composer textarea{border:none;background:transparent}
.composer textarea:focus{border-color:transparent}

.composer-toolbar{
  display:flex;align-items:center;gap:4px;padding:6px 12px;
  border-bottom:1px solid var(--line);
}
.composer-tool-btn{
  display:inline-flex;align-items:center;gap:4px;
  padding:5px 10px;border:1px solid var(--line2);border-radius:6px;
  background:transparent;color:var(--muted);font-size:12px;font-weight:500;
  white-space:nowrap;
}
.composer-tool-btn:hover{background:var(--panel2);color:var(--text);border-color:var(--accent)}

.composer-input-row{display:flex;align-items:flex-end;gap:0}
.composer-input-row textarea{flex:1;min-width:0}

.send-btn{
  min-width:68px;padding:12px 16px;margin:8px 12px 10px 0;
  background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;font-size:14px;font-weight:800;
  border:0;border-radius:8px;letter-spacing:1px;align-self:flex-end;
  box-shadow:0 2px 10px rgba(59,130,246,0.3);
}
.send-btn:hover{background:linear-gradient(135deg,#60a5fa,#3b82f6);box-shadow:0 4px 16px rgba(59,130,246,0.4);}
.send-btn:disabled{cursor:not-allowed;opacity:0.4}

/* ── Reply Bar ──────────────────────────────── */
.reply-bar{
  align-items:center;justify-content:space-between;gap:10px;
  padding:8px 16px;background:#101827;border-top:1px solid var(--line);
  color:var(--muted);font-size:13px;
}
.reply-content{display:flex;align-items:center;gap:8px;min-width:0}
.reply-label{color:var(--accent);font-weight:800}
.reply-target{color:var(--text);font-weight:700;white-space:nowrap}
.reply-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.reply-cancel{
  width:28px;height:28px;border:0;border-radius:6px;
  background:var(--panel2);color:var(--red);font-size:18px;font-weight:800;
}
.reply-cancel:hover{background:var(--soft)}

/* ── Empty & Toast ──────────────────────────── */
.empty-state{display:grid;place-items:center;align-content:center;height:100%;color:var(--muted);text-align:center}
.empty-title{color:var(--text);font-size:16px;font-weight:800}
.empty-copy{margin-top:6px;font-size:13px;color:var(--muted)}

.toast{
  position:fixed;right:18px;bottom:18px;
  max-width:min(380px,calc(100vw - 36px));
  border-radius:10px;background:var(--accent);color:#fff;
  padding:12px 16px;box-shadow:var(--shadow);font-size:13px;font-weight:600;
  animation:fadeIn .2s ease;z-index:9999;
}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ── Mobile ─────────────────────────────────── */
.mobile-toggle{
  display:none;position:fixed;top:10px;left:10px;z-index:100;
  width:40px;height:40px;border:none;border-radius:10px;
  background:var(--accent);color:#fff;font-size:20px;
  box-shadow:0 2px 10px rgba(0,0,0,0.4);cursor:pointer;
}

@media(max-width:780px){
  .mobile-toggle{display:block}
  .app-shell{grid-template-columns:1fr;height:100vh;overflow:hidden}
  .sidebar{
    position:fixed;top:0;left:0;width:300px;height:100vh;z-index:90;
    transform:translateX(-100%);transition:transform 0.25s ease;
    box-shadow:4px 0 20px rgba(0,0,0,0.5);
  }
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay{
    display:none;position:fixed;top:0;left:0;width:100%;height:100%;
    z-index:80;background:rgba(0,0,0,0.5);
  }
  .sidebar-overlay.open{display:block}
  .chat-main{height:100vh}
  .chat-header{padding:10px 10px 10px 56px}
  .message-list{padding:10px}
  .composer{gap:0;padding:0}
  .composer-toolbar{flex-wrap:wrap;padding:4px 8px;gap:2px}
  .composer-tool-btn{padding:4px 6px;font-size:11px}
  .composer textarea{min-height:60px;font-size:15px;padding:8px 10px}
  .header-actions{gap:4px}
  .header-call-btn{padding:0 8px;font-size:11px}
  .send-btn{min-width:56px;padding:10px 12px;font-size:13px;margin:6px 8px 8px 0}
  .template-panel{display:none}
  .app-shell{grid-template-columns:1fr !important}
}

/* ── 自动回复面板 ── */
.template-panel{
  display:flex;flex-direction:column;
  background:var(--panel);border-left:1px solid var(--line);
  overflow:hidden;transition:width 0.2s;
}
.template-panel.collapsed{width:40px;min-width:40px;}
.template-panel.collapsed .tpl-body{display:none}
.template-panel.collapsed .tpl-header h3{display:none}
.tpl-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-bottom:1px solid var(--line);
  flex-shrink:0;background:linear-gradient(135deg,rgba(59,130,246,0.08),transparent);
}
.tpl-header h3{margin:0;font-size:14px;font-weight:700;color:var(--accent);white-space:nowrap;}
.tpl-collapse-btn{
  background:none;border:none;color:var(--muted);font-size:18px;cursor:pointer;
  padding:2px 6px;border-radius:4px;
}
.tpl-collapse-btn:hover{background:var(--soft);color:var(--text);}
.tpl-body{display:flex;flex-direction:column;flex:1;overflow:hidden;padding:0;}
.tpl-auto-reply-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px;border-bottom:1px solid var(--line);
  flex-shrink:0;
}
.tpl-auto-switch{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text);cursor:pointer;font-weight:600;}
.tpl-auto-switch input{accent-color:var(--green);width:16px;height:16px;}
.tpl-auto-status{font-size:11px;color:var(--muted);font-weight:600;}
.tpl-auto-status.active{color:var(--green);background:var(--green-bg);padding:2px 8px;border-radius:10px;}
.ar-slots{flex:1;overflow-y:auto;padding:8px 10px 10px;}
.ar-slot-welcome{border-color:var(--accent) !important;background:rgba(59,130,246,0.08) !important;box-shadow:0 0 12px rgba(59,130,246,0.1);}
.ar-slot-welcome .ar-slot-label{color:var(--accent) !important;}
.ar-slot-welcome .ar-slot-hint{color:#60a5fa !important;}
.ar-slot-divider{
  text-align:center;font-size:10px;color:var(--accent);font-weight:600;
  padding:8px 0;margin:4px 0;
  border-bottom:1px dashed rgba(59,130,246,0.3);letter-spacing:0.5px;
}
.ar-slot{
  margin-bottom:10px;padding:10px;border-radius:8px;
  background:var(--panel2);border:1px solid var(--line);
}
.ar-slot-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:8px;
}
.ar-slot-label{font-size:12px;font-weight:700;color:var(--text);}
.ar-slot-hint{font-size:10px;color:var(--accent);font-weight:600;}
.ar-slot:nth-child(1) .ar-slot-label{color:#60a5fa;}
.ar-slot:nth-child(2) .ar-slot-label{color:#34d399;}
.ar-slot:nth-child(3) .ar-slot-label{color:#fbbf24;}
.ar-slot:nth-child(4) .ar-slot-label{color:#c084fc;}
.ar-textarea{
  width:100%;padding:6px 8px;border:1px solid var(--line2);border-radius:6px;
  background:var(--soft);color:var(--text);font-size:12px;resize:vertical;
  min-height:50px;box-sizing:border-box;font-family:inherit;
}
.ar-textarea:focus{outline:none;border-color:var(--accent);}
.ar-save-btn{
  margin-top:6px;width:100%;padding:6px 0;border:none;border-radius:6px;
  background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;font-size:12px;
  cursor:pointer;font-weight:600;letter-spacing:0.5px;
}
.ar-save-btn:hover{background:linear-gradient(135deg,#60a5fa,#3b82f6);box-shadow:0 2px 8px rgba(59,130,246,0.3);}
.ar-upload-btn{
  width:100%;padding:6px 0;border:1px dashed rgba(59,130,246,0.4);border-radius:6px;
  background:rgba(59,130,246,0.05);color:var(--accent);font-size:12px;
  cursor:pointer;margin-top:6px;font-weight:500;
}
.ar-upload-btn:hover{border-color:var(--accent);background:rgba(59,130,246,0.1);box-shadow:0 2px 8px rgba(59,130,246,0.15);}
.ar-media-list{display:flex;flex-wrap:wrap;gap:6px;}
.ar-media-thumb{
  position:relative;width:54px;height:54px;border-radius:6px;overflow:hidden;
  border:1px solid var(--line2);
}
.ar-media-thumb img{width:100%;height:100%;object-fit:cover;}
.ar-media-thumb .ar-del{
  position:absolute;top:1px;right:1px;width:16px;height:16px;
  border-radius:50%;background:rgba(0,0,0,0.7);color:var(--red);
  font-size:11px;border:none;cursor:pointer;display:grid;place-items:center;
  line-height:1;padding:0;
}
.ar-media-thumb .ar-del:hover{background:var(--red);color:#fff;}
.ar-media-preview{margin-bottom:4px;}
.ar-media-preview .ar-file-tag{
  display:flex;align-items:center;gap:6px;padding:7px 10px;
  border-radius:6px;background:var(--soft);border:1px solid var(--line2);
  font-size:11px;color:var(--text);
}
.ar-media-preview .ar-file-tag .ar-del{
  margin-left:auto;background:none;border:none;color:var(--red);
  font-size:13px;cursor:pointer;padding:0 2px;
}
.ar-note{
  padding:8px 14px;font-size:10px;color:var(--muted);text-align:center;
  border-top:1px solid var(--line);flex-shrink:0;
}