:root{--bg:#f5f7fb;--surface:#fff;--text:#1b2438;--muted:#626e85;--accent-muted:#626e98;--focus:#5261de;--line:#e9edf4;--soft:#eef0ff;--accent:#5261de;--green:#167f68;--orange:#a56b18;--red:#ba4454;--note:#fff9e9;font:14px/1.6 "Segoe UI","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);color-scheme:light}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,summary{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:2px}[hidden]{display:none!important}h1,h2,h3,p{margin:0}a{color:var(--accent);text-decoration:none}svg{width:19px;height:19px;vertical-align:middle;flex:none}button{color:inherit}button svg{pointer-events:none}.shell{display:grid;grid-template-columns:190px minmax(0,1fr);min-height:100dvh}.sidebar{background:var(--surface);border-right:1px solid var(--line);padding:26px 14px 18px;display:flex;flex-direction:column;gap:22px;position:sticky;top:0;height:100dvh}.brand{font-size:19px;font-weight:650;display:flex;align-items:center;gap:10px;padding:0 8px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--accent);color:#fff}.account-select{width:100%;border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 8px;font-size:12px}.nav{display:flex;flex-direction:column;gap:6px}.nav button{border:0;background:transparent;color:var(--muted);padding:11px 12px;display:flex;gap:11px;align-items:center;border-radius:10px;text-align:left}.nav button[aria-current=page]{color:var(--accent);background:var(--soft)}.nav-label{color:var(--muted);font-size:11px;letter-spacing:1px;padding:12px 12px 3px}.sidebar-bottom{margin-top:auto;padding:16px 4px 0;border-top:1px solid var(--line)}.profile{display:flex;align-items:center;gap:9px}.profile-name{font-weight:600;font-size:12px}.availability{border:0;background:#e7f5ef;color:var(--green);border-radius:5px;font-size:11px;padding:2px 5px;max-width:100%}.powered{font-size:10px;color:var(--muted);margin:15px 3px 0}.logout{display:flex;align-items:center;gap:6px;border:0;background:none;color:var(--muted);font-size:12px;margin-top:14px;padding:0}.main{min-width:0}.topbar{height:66px;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.breadcrumb{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:10px}.breadcrumb strong{color:var(--text);font-weight:500}.topbar-right{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:13px}.content{padding:28px 32px}.content.chat-content{padding:0}.page-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:24px}.page-heading h1,h1.heading{font-size:25px;letter-spacing:-.6px;font-weight:650}.subtitle{font-size:12px;color:var(--muted);margin-top:6px}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 13px;font-size:12px;white-space:nowrap}.btn:hover:not(:disabled){background:#f8f9fd}.btn.primary,.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.primary:hover:not(:disabled){background:#4654c9}.btn.soft,.soft{background:var(--soft);color:var(--accent);border-color:transparent}.btn.danger{color:var(--red)}.icon-btn{border:0;background:none;border-radius:6px;padding:5px;color:var(--muted)}.link{color:var(--accent);background:none;border:0;padding:0;font-size:12px}.card{background:var(--surface);border:1px solid var(--line);border-radius:13px;padding:22px;min-width:0}.grid{display:grid;gap:16px}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.stat-value{font-size:30px;font-weight:650;margin:7px 0}.muted{color:var(--muted)}.small{font-size:12px}.tag{font-size:11px;border-radius:5px;padding:3px 7px;background:var(--soft);color:var(--accent);display:inline-flex;gap:4px;align-items:center;white-space:nowrap}.tag.green{background:#e7f5ef;color:var(--green)}.tag.orange{background:#fff5e2;color:var(--orange)}.tag.gray{background:var(--bg);color:var(--muted)}.tag.red{background:#fdeef1;color:var(--red)}.avatar{display:grid;place-items:center;background:var(--soft);color:var(--accent);border-radius:11px;width:37px;height:37px;font-size:14px;font-weight:600;flex:none;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.field{display:block;margin:15px 0}.field>span{display:block;font-size:12px;margin-bottom:6px}.input{border:1px solid var(--line);border-radius:8px;padding:9px 11px;color:var(--text);background:var(--surface);width:100%;min-width:0;font-size:12px}.input:disabled{background:var(--bg)}.notice{padding:13px 16px;border-radius:9px;background:var(--soft);color:var(--accent);font-size:12px;overflow-wrap:anywhere}.notice.warning{background:#fff5e2;color:var(--orange)}.notice.error{background:#fdeef1;color:var(--red)}.divider{height:1px;background:var(--line);margin:17px 0}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}.table th{color:var(--muted);font-weight:500;border-bottom:1px solid var(--line);padding:13px 12px;background:var(--bg);white-space:nowrap}.table td{padding:16px 12px;border-bottom:1px solid var(--line)}.table tr:last-child td{border:0}.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:50px 22px;text-align:center;color:var(--muted);font-size:12px}.empty svg{width:36px;height:36px;color:#a6afd0}.loading-screen{min-height:100dvh;display:grid;place-items:center;color:var(--muted)}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);max-width:min(650px,90vw);padding:12px 19px;color:#fff;background:#252e46;border-radius:10px;box-shadow:0 8px 30px #17244128;z-index:100;font-size:13px;overflow-wrap:anywhere}.login-screen{min-height:100dvh;display:grid;grid-template-columns:1fr 1fr;background:#fff}.login-intro{background:linear-gradient(150deg,#f0f1ff,#f5f7fc);padding:clamp(32px,7vw,100px);display:flex;flex-direction:column;justify-content:center;gap:25px}.login-intro h1{font-size:36px;letter-spacing:-1px}.login-intro p{color:var(--muted);max-width:420px}.login-panel{display:flex;align-items:center;justify-content:center;padding:40px}.login-form{width:100%;max-width:350px}.login-form h2{font-size:26px;margin-bottom:7px}.login-form .btn{width:100%;margin-top:18px;padding:11px}.login-features{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:16px;font-size:12px;color:#56617e}.login-features>div{display:flex;flex-direction:column;gap:8px}.login-features svg{color:var(--accent);width:25px;height:25px}.chat-layout{display:grid;grid-template-columns:266px minmax(300px,1fr) 284px;height:calc(100dvh - 66px);min-height:0}.conversation-column{background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}.conversation-head{padding:23px 18px 17px}.conversation-head h1{font-size:22px;font-weight:650}.inbox-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin:15px 0}.inbox-tabs button{background:var(--bg);border:0;border-radius:7px;padding:8px 9px;font-size:11px;color:var(--muted);text-align:left;white-space:nowrap}.inbox-tabs button.active{background:var(--soft);color:var(--accent)}.search{position:relative}.search svg{position:absolute;left:9px;top:10px;width:15px;height:15px;color:var(--muted)}.search .input{padding-left:31px;background:var(--bg);border:0}.inbox-filter{margin-top:10px;font-size:11px}.list-bar{padding:10px 18px;display:flex;justify-content:space-between;font-size:11px;color:var(--muted);border-block:1px solid var(--line)}.conversation-list{overflow-y:auto;flex:1;min-height:0}.conversation{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);padding:16px 18px;background:transparent}.conversation:hover{background:#f8f9fe}.conversation.active{background:var(--soft);box-shadow:inset 3px 0 var(--accent)}.conversation .avatar{width:34px;height:34px;border-radius:10px;font-size:12px;background:var(--bg)}.conversation .meta{flex:1;min-width:0}.conversation-name{font-size:12px;font-weight:600;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-time{font-size:10px;color:var(--muted)}.conversation-preview{color:var(--muted);font-size:11px;margin:8px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread{font-size:10px;background:var(--accent);color:white;border-radius:5px;padding:0 5px}.pagination{display:flex;justify-content:space-between;align-items:center;padding:10px 15px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.pagination .btn{padding:5px 8px}.chat-pane{min-width:0;display:flex;flex-direction:column;min-height:0;background:var(--bg)}.chat-header{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#fff;border-bottom:1px solid var(--line);padding:19px 22px;min-height:86px}.chat-title{font-size:16px;font-weight:600}.chat-header .btn{padding:6px 9px;font-size:11px}.chat-header .avatar{width:35px;height:35px}.chat-history{flex:1;overflow-y:auto;padding:20px 25px;display:flex;flex-direction:column;gap:19px;min-height:0}.history-date{text-align:center;color:var(--muted);font-size:11px}.load-history{align-self:center;font-size:11px;padding:5px 10px}.message{display:flex;gap:9px;align-items:flex-start;max-width:93%}.message>.avatar{width:29px;height:29px;border-radius:9px;font-size:11px}.message-body{min-width:0;max-width:100%}.message-text{border-radius:0 11px 11px 11px;background:#fff;padding:12px 15px;font-size:13px;line-height:1.75;border:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere}.message-meta{font-size:10px;color:var(--muted);margin-top:5px;overflow-wrap:anywhere}.message.outgoing{align-self:flex-end;flex-direction:row-reverse}.message.outgoing .message-text{background:var(--soft);border:0;border-radius:11px 0 11px 11px}.message.outgoing .message-meta{text-align:right}.message.private{width:100%;max-width:100%;background:var(--note);border:1px solid #f1e8cc;border-radius:10px;padding:12px 14px}.message.private .message-text{background:none;border:0;padding:0}.message.private .message-meta{text-align:left}.activity{align-self:center;background:#fff;border-radius:7px;font-size:11px;padding:5px 12px;color:var(--muted);overflow-wrap:anywhere;max-width:95%;text-align:center}.message img.attachment-image{display:block;max-width:min(100%,340px);max-height:260px;object-fit:contain;border-radius:9px;margin-top:6px}.attachment-link{display:flex;align-items:center;gap:7px;padding:9px 12px;border:1px solid var(--line);background:#fff;border-radius:8px;margin-top:6px;overflow-wrap:anywhere;font-size:12px}.message audio,.message video{max-width:100%;display:block;margin-top:6px}.composer{background:#fff;border-top:1px solid var(--line);padding:15px 20px}.composer.note{background:var(--note)}.compose-tabs{display:flex;gap:16px}.compose-tabs button{padding:0 0 7px;border:0;background:none;font-size:12px;color:var(--muted)}.compose-tabs button.active{color:var(--accent);border-bottom:2px solid var(--accent)}.composer textarea{display:block;width:100%;resize:vertical;border:0;background:transparent;outline:none;min-height:83px;max-height:240px;padding:13px 0;font-size:13px;line-height:1.75}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.composer-info{font-size:10px;color:var(--muted)}.file-chip{display:inline-flex;gap:8px;align-items:center;background:var(--soft);border-radius:7px;padding:5px 9px;font-size:11px;margin:4px 0 8px;max-width:100%;overflow-wrap:anywhere}.file-chip button{border:0;background:none;padding:0;color:var(--red)}.customer-column{background:#fff;border-left:1px solid var(--line);padding:24px 20px;overflow-y:auto;min-height:0}.customer-column h2{font-size:15px;margin-bottom:20px}.properties{display:grid;grid-template-columns:74px minmax(0,1fr);gap:10px 7px;font-size:11px;margin:18px 0}.properties dt{color:var(--muted)}.properties dd{margin:0;text-align:right;overflow-wrap:anywhere}.properties.wide{grid-template-columns:minmax(75px,1fr) minmax(0,2fr)}.label-list{display:flex;gap:6px;flex-wrap:wrap}.customer-column .field{margin:13px 0}.customer-column .input{font-size:11px;padding:7px 8px}.pending-check{padding:11px 18px;background:#fff5e2;color:var(--orange);font-size:11px;border-bottom:1px solid #f3e6c7;display:flex;justify-content:space-between;gap:9px;align-items:flex-start;overflow-wrap:anywhere}.pending-check .link{color:var(--orange);white-space:nowrap}.error-inline{color:var(--red);font-size:12px;overflow-wrap:anywhere}.dialog-backdrop{position:fixed;inset:0;background:#1b243866;z-index:80;display:grid;place-items:center;padding:24px}.dialog{background:#fff;border-radius:16px;padding:26px;max-width:490px;width:100%;max-height:90dvh;overflow:auto;box-shadow:0 18px 75px #101b3c26}.dialog h2{font-size:20px;margin-bottom:12px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.tabs{display:flex;gap:20px;border-bottom:1px solid var(--line);margin:20px 0;overflow:auto}.tabs button{padding:10px 0;border:0;background:none;color:var(--muted);font-size:12px;white-space:nowrap}.tabs button.active,.tabs button[aria-selected=true]{color:var(--accent);border-bottom:2px solid var(--accent)}.mobile-back{display:none}.badge-count{margin-left:auto;background:var(--accent);color:#fff;border-radius:6px;font-size:10px;padding:1px 5px}.toggle{accent-color:var(--accent)}
@media(max-width:1260px){.shell{grid-template-columns:170px minmax(0,1fr)}.chat-layout{grid-template-columns:224px minmax(250px,1fr) 237px}.chat-header{padding:16px}.chat-history{padding:18px}.customer-column{padding:22px 15px}.content{padding:25px}.topbar{padding:0 23px}.conversation{padding:15px}.conversation-head{padding:21px 15px 16px}.chat-header .row{gap:7px}.chat-header .avatar{display:none}}
@media(max-width:1050px){.chat-layout{grid-template-columns:218px minmax(250px,1fr)}.customer-column{grid-column:2;border-left:0;border-top:1px solid var(--line);height:auto;max-height:370px}.chat-layout{height:auto;min-height:calc(100dvh - 66px)}.chat-pane{height:calc(100dvh - 66px);min-height:0}.conversation-column{grid-row:span 2;height:calc(100dvh - 66px);position:sticky;top:66px}.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}.login-intro{padding:40px}.login-intro h1{font-size:29px}}
@media(max-width:760px){.shell{grid-template-columns:72px minmax(0,1fr)}.sidebar{padding:20px 8px 14px;align-items:center;gap:18px}.brand{padding:0}.brand>span:last-child,.nav button span,.nav-label,.account-select,.profile>div:last-child,.logout span{display:none}.nav{width:100%}.nav button{justify-content:center;padding:12px}.nav button .badge-count{display:none}.sidebar-bottom{width:100%;padding:16px 0 0}.profile{justify-content:center}.logout{margin:14px auto 0;padding:5px}.content{padding:22px 18px}.topbar{padding:0 18px}.topbar-right>span{display:none}.chat-layout{grid-template-columns:190px minmax(0,1fr)}.conversation-head{padding:18px 12px}.conversation-head h1{font-size:19px}.conversation{padding:13px 12px}.inbox-tabs{gap:4px}.inbox-tabs button{font-size:10px;padding:7px}.conversation-name{max-width:103px}.chat-header{align-items:flex-start;flex-wrap:wrap;padding:14px}.chat-history{padding:16px 12px}.composer{padding:13px}.composer-info{display:none}.chat-header .small{font-size:10px}.page-heading{flex-wrap:wrap}.cols-2,.cols-3{grid-template-columns:1fr}.login-screen{grid-template-columns:1fr}.login-intro{display:none}.login-panel{min-height:100dvh;padding:26px}.message{max-width:99%}.message>.avatar{display:none}.message-text{padding:10px 12px}.dialog-backdrop{padding:15px}.dialog{padding:22px}}
@media(max-width:580px){.shell{grid-template-columns:58px minmax(0,1fr)}.sidebar{padding:18px 6px}.brand-mark{width:31px;height:31px}.nav button{padding:11px 8px}.chat-layout{display:block;min-height:calc(100dvh - 66px)}.conversation-column{height:calc(100dvh - 66px);position:static}.chat-pane,.customer-column{display:none}.chat-layout.selected .conversation-column{display:none}.chat-layout.selected .chat-pane{display:flex}.chat-layout.selected .customer-column{display:block}.mobile-back{display:inline-flex}.chat-pane{min-height:calc(100dvh - 66px)}.topbar{padding:0 13px;gap:6px}.topbar-right{gap:5px}.topbar-right .btn{padding:6px 8px;font-size:11px}.breadcrumb{font-size:11px;gap:6px}.content{padding:20px 14px}.page-heading h1,h1.heading{font-size:22px}.card{padding:17px}.cols-4{grid-template-columns:1fr 1fr;gap:9px}.btn{padding:7px 10px}.pending-check{padding:10px 12px}.properties{grid-template-columns:80px minmax(0,1fr)}.customer-column{max-height:none}.composer-bottom{gap:5px}.composer-bottom .row{gap:4px}.conversation-head{padding:23px 17px 17px}.conversation{padding:17px}.inbox-tabs{gap:6px}.inbox-tabs button{font-size:11px;padding:9px}.conversation-name{max-width:170px}.conversation-list .empty{padding:45px 15px}}
.quick-reply{text-align:left;display:block;width:100%;margin-top:12px}.quick-reply p{margin-top:6px;white-space:pre-wrap;overflow-wrap:anywhere}
@media(max-width:760px){.powered{font-size:8px;line-height:1.45;overflow-wrap:anywhere;text-align:center;padding:0 2px;white-space:normal}}
.conversation .tag.gray{display:block;max-width:73%;overflow:hidden;text-overflow:ellipsis}.conversation-head .inbox-tabs{margin-top:0}

/* Keep the established workspace compact, readable, and keyboard accessible. */
::selection{background:#dfe3ff;color:var(--text)}
input,textarea{caret-color:var(--accent)}
.conversation-list,.chat-history,.customer-column,.table-wrap,.dialog{scrollbar-width:thin;scrollbar-color:#c4ccdf transparent;scrollbar-gutter:stable}
.conversation-time,.message-meta,.pagination,.badge-count{font-variant-numeric:tabular-nums}
.nav button:hover:not([aria-current=page]),.icon-btn:hover:not(:disabled){background:var(--bg);color:var(--accent)}
.link:hover:not(:disabled){text-decoration:underline;text-underline-offset:3px}
.btn,.icon-btn{min-height:36px}
.composer textarea{border-radius:6px;padding:12px 8px;margin:4px 0}
.composer textarea:focus-visible{outline:2px solid var(--focus);outline-offset:0}
.composer.note textarea:focus-visible{outline-color:var(--orange)}
.composer.note .muted,.message.private .muted{color:#856b32}
.conversation.active .conversation-preview,.conversation.active .conversation-time,.conversation.active .tag.gray{color:var(--accent-muted)}
.chat-header>.row:first-child{flex:1;min-width:0;flex-wrap:nowrap}
.chat-header>.row:first-child>div:last-child{min-width:0}
.chat-header>.row:last-child{flex-shrink:0}
.chat-title{display:flex;align-items:center;flex-wrap:wrap;gap:6px;overflow-wrap:anywhere}
.chat-name{min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-context{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-header .small{overflow-wrap:anywhere}
.customer-column>.row{flex-wrap:nowrap;align-items:flex-start}
.customer-column>.row>div:last-child{min-width:0;flex:1;overflow-wrap:anywhere}
.customer-column .tag{max-width:100%;white-space:normal}
.profile>div:last-child{min-width:0}
.profile-name{overflow-wrap:anywhere}
.compact-account-icon{display:none}
.account-switch{position:relative;display:block;width:100%}
.inbox-tabs button{min-width:0;white-space:normal;overflow-wrap:anywhere}
.conversation>.row,.conversation .meta>.between{flex-wrap:nowrap}
.conversation-name{flex:1;min-width:0}
.conversation-time,.unread{flex-shrink:0}
.conversation .tag.gray{max-width:100%}
.list-bar{align-items:center;gap:8px;min-height:40px}
.list-bar .link{flex-shrink:0}
.file-chip{display:flex;min-width:0}
.file-chip button{flex-shrink:0;margin-left:auto;min-width:32px;min-height:32px}
@media(max-width:760px){
  .account-switch{width:44px;height:40px;flex-shrink:0}
  .account-select{display:block;width:44px;height:40px;padding:0;appearance:none;color:transparent;background:var(--bg)}
  .account-select option{color:var(--text);background:var(--surface)}
  .compact-account-icon{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);pointer-events:none}
  .profile{flex-direction:column;gap:7px}
  .profile>div:last-child{display:block;width:100%}
  .profile-name{display:none}
  .availability{width:100%;min-height:36px;padding:2px 0;font-size:10px}
  .nav button,.logout{min-height:44px}
  .chat-header{align-items:center}
  .chat-header>.row:first-child{flex-basis:100%}
  .composer-bottom{flex-wrap:wrap;gap:8px}
  .composer-bottom>.row:last-child{margin-left:auto}
  .composer .link,.compose-tabs button,.composer .icon-btn,.chat-header .btn{min-height:40px}
  .compose-tabs button{display:inline-flex;align-items:center;gap:4px;padding-bottom:4px}
  .composer-bottom>.row{gap:8px}
}
@media(max-height:620px){.sidebar{overflow-y:auto;gap:12px;padding-top:14px}.sidebar-bottom{padding-top:10px}.nav{gap:3px}}