*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;font-size:14px;color:#333;background:#f0f2f5;overflow:hidden}
input,select,textarea{outline:none;border:1px solid #d9d9d9;border-radius:6px;padding:8px 12px;font-size:14px;transition:border-color .2s;font-family:inherit}
input:focus,textarea:focus{border-color:#1677ff;box-shadow:0 0 0 2px rgba(22,119,255,.1)}
button{cursor:pointer;border:none;border-radius:6px;font-size:14px;padding:8px 16px;transition:all .2s;font-family:inherit}
.btn-primary{background:#1677ff;color:#fff}.btn-primary:hover{background:#4096ff}
.btn-default{background:#fff;color:#333;border:1px solid #d9d9d9}.btn-default:hover{border-color:#1677ff;color:#1677ff}
.btn-danger{background:#ff4d4f;color:#fff}.btn-danger:hover{background:#ff7875}
.btn-sm{padding:4px 10px;font-size:12px}
.btn-block{width:100%;padding:10px}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1677ff 0%,#0050b3 100%)}
.login-box{background:#fff;border-radius:12px;padding:40px;width:360px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.login-logo{display:flex;align-items:center;gap:10px;margin-bottom:24px;justify-content:center;font-size:18px;font-weight:700;color:#1677ff}
.form-group{margin-bottom:14px}
.form-group input{width:100%}
.login-tip{text-align:center;color:#999;font-size:12px;margin-top:12px}

/* Workspace */
.workspace{display:flex;height:100vh;background:#fff}

/* Nav Bar */
.nav-bar{width:60px;background:#1e2a3a;display:flex;flex-direction:column;align-items:center;padding:12px 0;flex-shrink:0;position:relative}
.nav-top{margin-bottom:16px}
.agent-avatar{width:40px;height:40px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;cursor:pointer;position:relative}
.status-dot{position:absolute;bottom:1px;right:1px;width:10px;height:10px;border-radius:50%;border:2px solid #1e2a3a;background:#52c41a}
.status-dot.busy{background:#faad14}
.status-dot.offline{background:#8c8c8c}
.status-menu{position:absolute;left:56px;top:12px;background:#fff;border-radius:8px;box-shadow:0 4px 20px rgba(0,0,0,.15);z-index:100;min-width:120px;overflow:hidden}
.status-item{padding:10px 16px;cursor:pointer;font-size:13px}.status-item:hover{background:#f5f5f5}
.nav-icons{flex:1;display:flex;flex-direction:column;gap:4px;width:100%}
.nav-icon{width:100%;height:44px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.5);cursor:pointer;border-radius:0;position:relative;transition:all .2s}
.nav-icon:hover,.nav-icon.active{color:#fff;background:rgba(255,255,255,.1)}
.nav-icon.active{color:#1677ff}
.nav-icon svg{width:20px;height:20px}
.nav-badge{position:absolute;top:6px;right:6px;background:#ff4d4f;color:#fff;font-size:10px;border-radius:10px;padding:0 4px;min-width:16px;height:16px;display:flex;align-items:center;justify-content:center}
.nav-bottom{margin-top:auto;display:flex;flex-direction:column;gap:4px;width:100%}

/* Session Panel */
.session-panel{width:280px;border-right:1px solid #f0f0f0;display:flex;flex-direction:column;flex-shrink:0;background:#fafafa}
.panel-header{padding:14px 16px;border-bottom:1px solid #f0f0f0;background:#fff;display:flex;align-items:center;justify-content:space-between}
.panel-header h3{font-size:15px;font-weight:600}
.panel-tabs{display:flex;gap:0}
.tab{padding:6px 12px;cursor:pointer;font-size:13px;color:#8c8c8c;border-bottom:2px solid transparent;transition:all .2s}
.tab.active{color:#1677ff;border-bottom-color:#1677ff}
.tab em{font-style:normal;font-size:11px;background:#f0f0f0;color:#666;border-radius:10px;padding:1px 5px;margin-left:3px}
.tab em.badge-red{background:#ff4d4f;color:#fff}
.session-search{padding:8px 12px;background:#fff;border-bottom:1px solid #f0f0f0}
.session-search input{width:100%;background:#f5f5f5;border-color:#f5f5f5;font-size:13px;padding:6px 10px}
.session-list{flex:1;overflow-y:auto}
.session-item{padding:12px 16px;cursor:pointer;border-bottom:1px solid #f0f0f0;background:#fff;transition:background .15s;display:flex;gap:10px;align-items:flex-start}
.session-item:hover{background:#f5f8ff}
.session-item.active{background:#e6f4ff;border-left:3px solid #1677ff}
.session-item.unread .session-name{font-weight:600}
.session-avatar{width:38px;height:38px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:15px}
.session-avatar.waiting{background:#fa8c16}
.session-body{flex:1;min-width:0}
.session-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:3px}
.session-name{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.session-time{font-size:11px;color:#bbb;flex-shrink:0}
.session-preview{font-size:12px;color:#999;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.session-badges{display:flex;gap:4px;margin-top:4px}
.s-badge{font-size:10px;padding:1px 5px;border-radius:4px}
.s-badge.waiting{background:#fff7e6;color:#fa8c16;border:1px solid #ffd591}
.s-badge.active{background:#f6ffed;color:#52c41a;border:1px solid #b7eb8f}
.unread-dot{width:8px;height:8px;border-radius:50%;background:#ff4d4f;flex-shrink:0;margin-top:6px}

/* Chat Main */
.chat-main{flex:1;display:flex;flex-direction:column;background:#f5f7fa;position:relative;min-width:0}
.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#bbb;gap:12px}
.chat-empty p{font-size:15px;color:#999}
.chat-empty .sub{font-size:13px;color:#bbb}
.chat-area{flex:1;display:flex;flex-direction:column;height:100%}

/* Chat Header */
.chat-header{padding:12px 20px;background:#fff;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.chat-header-left{display:flex;align-items:center;gap:12px}
.visitor-avatar{width:38px;height:38px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;cursor:pointer}
.visitor-name{font-size:15px;font-weight:600}
.visitor-meta{font-size:12px;color:#999}
.chat-header-right{display:flex;gap:8px}

/* Messages */
.messages-wrap{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:12px}
.messages{display:flex;flex-direction:column;gap:12px}
.msg-row{display:flex;gap:10px;align-items:flex-end}
.msg-row.agent{flex-direction:row-reverse}
.msg-avatar{width:34px;height:34px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.msg-avatar.visitor{background:#52c41a}
.msg-bubble{max-width:60%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.6;word-break:break-word;position:relative}
.msg-row.visitor .msg-bubble{background:#fff;border-radius:2px 12px 12px 12px;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.msg-row.agent .msg-bubble{background:#1677ff;color:#fff;border-radius:12px 2px 12px 12px}
.msg-row.system{justify-content:center}
.msg-system{background:#f0f0f0;color:#999;font-size:12px;padding:4px 12px;border-radius:10px}
.msg-time{font-size:11px;color:#bbb;margin-top:4px;text-align:right}
.msg-row.visitor .msg-time{text-align:left}
.msg-img{max-width:200px;max-height:200px;border-radius:8px;cursor:pointer;display:block}
.msg-file{display:flex;align-items:center;gap:8px;padding:8px 12px;background:rgba(255,255,255,.2);border-radius:8px;cursor:pointer}
.msg-row.visitor .msg-file{background:#f5f5f5}
.msg-file-icon{font-size:24px}
.msg-file-info .name{font-size:13px;font-weight:500}
.msg-file-info .size{font-size:11px;opacity:.7}

/* Toolbar */
.toolbar{padding:8px 16px;background:#fff;border-top:1px solid #f0f0f0;display:flex;align-items:center;gap:4px;flex-shrink:0}
.tool-btn{background:none;border:none;padding:6px;color:#8c8c8c;border-radius:6px;display:flex;align-items:center;justify-content:center}
.tool-btn:hover{background:#f5f5f5;color:#1677ff}
.tool-btn svg{width:18px;height:18px}
.tool-tip{font-size:11px;color:#bbb}

/* Input Area */
.input-area{padding:12px 16px;background:#fff;display:flex;gap:10px;align-items:flex-end;flex-shrink:0}
.input-area textarea{flex:1;resize:none;border-radius:8px;font-size:14px;line-height:1.6;max-height:120px}
.btn-send{background:#1677ff;color:#fff;padding:8px 20px;border-radius:8px;font-size:14px;align-self:flex-end;height:38px}
.btn-send:hover{background:#4096ff}

/* Quick Panel */
.quick-panel{position:absolute;bottom:120px;left:0;right:0;background:#fff;border-top:1px solid #f0f0f0;max-height:280px;overflow-y:auto;z-index:50;box-shadow:0 -4px 20px rgba(0,0,0,.1)}
.quick-panel-header{display:flex;gap:8px;padding:10px 16px;border-bottom:1px solid #f0f0f0}
.quick-panel-header input{flex:1}
.quick-panel-header button{background:none;border:none;font-size:18px;color:#999;cursor:pointer}
.quick-item{padding:10px 16px;cursor:pointer;border-bottom:1px solid #f5f5f5;transition:background .15s}
.quick-item:hover{background:#f0f5ff}
.quick-item .q-title{font-size:13px;font-weight:500;color:#333;margin-bottom:3px}
.quick-item .q-content{font-size:12px;color:#999;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Visitor Panel */
.visitor-panel{width:260px;border-left:1px solid #f0f0f0;background:#fff;overflow-y:auto;flex-shrink:0}
.visitor-panel-header{padding:14px 16px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;font-weight:600}
.visitor-panel-header button{background:none;border:none;font-size:18px;color:#999;cursor:pointer}
.info-section{padding:16px}
.info-section h4{font-size:12px;color:#999;text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}
.info-item{display:flex;gap:8px;margin-bottom:8px;font-size:13px}
.info-label{color:#999;flex-shrink:0;min-width:50px}
.info-value{color:#333;word-break:break-all}
.history-item{padding:8px 0;border-bottom:1px solid #f5f5f5;cursor:pointer}
.history-item:hover{color:#1677ff}
.history-item .h-no{font-size:12px;color:#1677ff}
.history-item .h-msg{font-size:12px;color:#999;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.history-item .h-time{font-size:11px;color:#bbb}

/* Transfer */
.transfer-agent{display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;cursor:pointer;transition:background .15s}
.transfer-agent:hover{background:#f5f8ff}
.transfer-agent .t-avatar{width:36px;height:36px;border-radius:50%;background:#1677ff;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.transfer-agent .t-name{font-size:13px;font-weight:500}
.transfer-agent .t-status{font-size:12px;color:#999}
.transfer-agent .t-btn{margin-left:auto}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal-box{background:#fff;border-radius:10px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #f0f0f0}
.modal-header h3{font-size:16px;font-weight:600}
.modal-header button{background:none;border:none;font-size:20px;color:#999;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center}
.modal-body{padding:20px}
.modal-footer{padding:16px 20px;border-top:1px solid #f0f0f0;display:flex;justify-content:flex-end;gap:10px}

/* Stats */
.stat-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #f5f5f5}
.stat-row .s-label{color:#666;font-size:13px}
.stat-row .s-val{font-size:18px;font-weight:700;color:#1677ff}

/* Toast */
.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{background:#fff;border-radius:8px;padding:12px 16px;box-shadow:0 4px 20px rgba(0,0,0,.15);display:flex;align-items:center;gap:10px;min-width:200px;animation:slideIn .3s ease}
.toast.success{border-left:4px solid #52c41a}
.toast.error{border-left:4px solid #ff4d4f}
.toast.info{border-left:4px solid #1677ff}
@keyframes slideIn{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Scrollbar */
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#d9d9d9;border-radius:2px}
::-webkit-scrollbar-thumb:hover{background:#bbb}