:root{--ink: #14161c;--primary: #f2900c;--primary-hover: #d97a00;--primary-soft: #fff4e0;--primary-soft-border: #fde3a1;--danger: #ef4444;--danger-soft: #fdecec;--danger-soft-border: #f8c9c9;--success: #16a34a;--success-soft: #eafaf0;--success-soft-border: #b8ecc9;--warning: #f4a809;--warning-soft: #fff8ea;--warning-soft-border: #fde3a1;--border: #e5e7eb;--border-soft: #f1f2f4;--muted: #9aa0ab}.panel{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:0 1px 2px #1018280a}.panel-header{padding:14px 18px;border-bottom:1px solid var(--border-soft);display:flex;align-items:center;justify-content:space-between;background:#fff}.panel-title{font-size:13.5px;font-weight:700;color:var(--ink);letter-spacing:-.01em}.panel-action{font-size:12.5px;color:#fff;font-weight:600;text-decoration:none;border:none;background:var(--primary);cursor:pointer;padding:7px 14px;border-radius:8px;transition:background .15s,transform .1s;display:inline-flex;align-items:center;gap:5px}.panel-action:hover{background:var(--primary-hover)}.panel-action:active{transform:scale(.97)}.chat-shell{display:flex;height:calc(100vh - 150px);min-height:580px}.chat-shell .panel{display:flex;flex-direction:column}.chat-back-btn{display:none;width:30px;height:30px;border-radius:50%;border:none;background:transparent;color:var(--muted);align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .15s,color .15s}.chat-back-btn:hover{background:var(--border-soft);color:var(--ink)}@media (max-width: 700px){.chat-shell{height:calc(100vh - 90px)}#conv-list-col,#chat-col{width:100%;max-width:100%;flex:0 0 100%;position:absolute;top:0;right:0;bottom:0;left:0;transition:transform .2s ease}#chat-col{transform:translate(100%);z-index:2}.chat-shell{position:relative;overflow:hidden}.chat-shell.chat-active #conv-list-col{transform:translate(-100%)}.chat-shell.chat-active #chat-col{transform:translate(0)}.chat-back-btn{display:flex}}.conv-search{padding:12px 14px;border-bottom:1px solid var(--border-soft);position:relative}.conv-search svg{position:absolute;left:26px;top:50%;transform:translateY(-50%);width:14px;height:14px;stroke:var(--muted);fill:none;stroke-width:2;pointer-events:none}.conv-search input{width:100%;border:1px solid var(--border);border-radius:8px;padding:8px 12px 8px 32px;font-size:13px;outline:none;background:#fafafa;transition:border-color .15s,background .15s}.conv-search input:focus{border-color:var(--primary);background:#fff}.conv-list{overflow-y:auto;flex:1}.conv-list::-webkit-scrollbar,.chat-body::-webkit-scrollbar{width:6px}.conv-list::-webkit-scrollbar-thumb,.chat-body::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:10px}.conv-list::-webkit-scrollbar-track,.chat-body::-webkit-scrollbar-track{background:transparent}.conv-item{display:flex;align-items:center;gap:11px;padding:12px 16px;border-bottom:1px solid var(--border-soft);cursor:pointer;transition:background .15s,box-shadow .15s;position:relative}.conv-item:hover{background:#fafafa}.conv-item.active{background:var(--primary-soft)}.conv-item.active:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary)}.conv-av{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--av-color, #9aa0ab),color-mix(in srgb,var(--av-color, #9aa0ab) 65%,black));border:none;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0;position:relative}.conv-av.bug-type{background:var(--danger-soft);border:1px solid var(--danger-soft-border);color:var(--danger);border-radius:9px}.online-dot{width:9px;height:9px;border-radius:50%;position:absolute;bottom:-1px;right:-1px;border:2px solid #fff}.online-dot.online{background:var(--success)}.online-dot.offline{background:var(--muted)}.conv-info{flex:1;min-width:0}.conv-name-row{display:flex;align-items:center;justify-content:space-between;gap:6px}.conv-name{font-size:13.5px;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{font-size:10.5px;color:var(--muted);flex-shrink:0;font-weight:500}.conv-bottom-row{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-top:2px}.conv-preview{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-bug-tag{display:inline-flex;align-items:center;gap:4px;font-size:10px;font-weight:600;background:var(--danger-soft);color:var(--danger);border:1px solid var(--danger-soft-border);padding:1px 8px;border-radius:20px;margin-top:4px;width:fit-content}.conv-bug-tag:before{content:"";width:4px;height:4px;border-radius:50%;background:var(--danger)}.unread-badge{min-width:18px;height:18px;border-radius:20px;background:var(--primary);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 5px;flex-shrink:0;box-shadow:0 1px 3px #f2900c59}.conv-empty{padding:40px 20px;text-align:center;color:var(--muted);font-size:12.5px}.chat-header{display:flex;align-items:center;gap:11px}.chat-header .conv-av{width:34px;height:34px;border-radius:9px;font-size:12px}.chat-header-text{display:flex;flex-direction:column;gap:1px}.chat-header-name{font-size:13.5px;font-weight:700;color:var(--ink)}.chat-header-role{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:5px}.chat-header-role .dot{width:6px;height:6px;border-radius:50%;background:var(--success)}.chat-header-role .dot.offline{background:var(--muted)}.chat-body{flex:1;overflow-y:auto;padding:20px;background:#fbfbfb;display:flex;flex-direction:column;gap:3px}.date-divider{display:flex;align-items:center;gap:12px;margin:10px 0;color:var(--muted);font-size:11px;font-weight:600}.date-divider:before,.date-divider:after{content:"";flex:1;height:1px;background:var(--border-soft)}.msg-row{display:flex;flex-direction:column;max-width:62%;margin-bottom:8px;animation:msgIn .15s ease-out}@keyframes msgIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.msg-row.mine{align-self:flex-end;align-items:flex-end}.msg-row.theirs{align-self:flex-start;align-items:flex-start}.msg-row.grouped{margin-top:-5px}.msg-row.mine.grouped .msg-bubble{border-top-right-radius:4px}.msg-row.theirs.grouped .msg-bubble{border-top-left-radius:4px}.msg-row:not(.grouped) .msg-sender{margin-top:6px}.msg-sender{font-size:10.5px;font-weight:600;color:var(--muted);margin-bottom:3px;padding:0 4px}.msg-bubble{padding:12px 16px;border-radius:16px;max-width:420px;font-size:13.5px;line-height:1.5;word-break:break-word}.msg-row.mine .msg-bubble{background:var(--ink);color:#fff;border-bottom-right-radius:4px;box-shadow:0 1px 2px #14161c40}.msg-row.theirs .msg-bubble{background:#fff;color:var(--ink);border:1px solid var(--border);border-bottom-left-radius:4px}.msg-bubble.image-msg{padding:0;background:transparent;border:none;box-shadow:none;border-radius:14px;overflow:hidden}.msg-bubble.image-msg img{max-width:220px;max-height:220px;border-radius:14px;border:1px solid var(--border);display:block;object-fit:cover;box-shadow:0 1px 3px #1018281a}.msg-row.mine .msg-bubble.image-msg img,.msg-row.theirs .msg-bubble.image-msg img{border:1px solid var(--border-soft)}.msg-meta{display:flex;justify-content:flex-end;align-items:center;margin-top:6px}.msg-time{font-size:11px;color:#9aa0ab;-webkit-user-select:none;user-select:none}.msg-row.mine .msg-meta svg{width:12px;height:12px;stroke:var(--primary);fill:none;stroke-width:2.5;color:#ffffffbf}#chat-box img{border:1px solid var(--border)!important;box-shadow:0 1px 3px #1018281a!important}.chat-footer{padding:14px 18px;border-top:1px solid var(--border-soft);display:flex;align-items:center;gap:10px;background:#fff;box-shadow:0 -1px 0 var(--border-soft)}.chat-footer input{flex:1;border:1px solid transparent;border-radius:22px;padding:10px 18px;font-size:13.5px;outline:none;background:#f5f6f8;transition:border-color .15s,background .15s,box-shadow .15s}.chat-footer input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px var(--primary-soft)}.chat-footer input:disabled{cursor:not-allowed}.chat-send-btn{width:40px;height:40px;border-radius:50%;background:var(--primary);border:none;color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;cursor:pointer;transition:background .15s,transform .1s;box-shadow:0 2px 5px #f2900c4d}.chat-send-btn:hover{background:var(--primary-hover)}.chat-send-btn:active{transform:scale(.94)}.chat-send-btn:disabled{background:#e5e7eb;box-shadow:none;cursor:not-allowed}.chat-send-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}#attach-btn{background:#f5f6f8;border:1px solid transparent;color:var(--muted);box-shadow:none;font-size:16px}#attach-btn:hover{background:#eef0f3}.empty-chat-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);font-size:13px;gap:10px}.empty-chat-state .icon-wrap{width:56px;height:56px;border-radius:16px;background:#f3f4f6;display:flex;align-items:center;justify-content:center}.empty-chat-state svg{width:26px;height:26px;stroke:#b0b0b0;fill:none;stroke-width:1.6}.empty-chat-state strong{color:#6b7280;font-size:13px;font-weight:600}.empty-chat-state span{font-size:12px}#remove-image{width:32px;height:32px;border:none;border-radius:50%;background:var(--danger);color:#fff;cursor:pointer}.unread-badge{min-width:20px;height:20px;padding:0 6px;border-radius:20px;background:#28a745;color:#fff;font-size:11px;display:inline-flex;align-items:center;justify-content:center;margin-left:8px;font-weight:600}.conv-preview-row{display:flex;justify-content:space-between;align-items:center}.modal-body{padding:0;display:flex;flex-direction:column}#user-list{flex:1;overflow-y:auto;max-height:calc(100vh - 220px)}.chat-embed,.chat-embed body{height:100vh;overflow:hidden}.chat-embed .container-fluid,.chat-embed .row,.chat-embed .chat-shell,.chat-embed #conv-list-col,.chat-embed #chat-col,.chat-embed .panel{height:100%;min-height:0}.chat-embed .panel{display:flex;flex-direction:column}.chat-embed .conv-list,.chat-embed .chat-body{flex:1;min-height:0;overflow-y:auto}.chat-embed .chat-footer-wrapper{flex-shrink:0;background:#fff;border-top:1px solid var(--border-soft)}.chat-embed .chat-footer{display:flex;align-items:center;gap:10px;padding:22px 16px}.chat-embed .chat-footer input{flex:1;min-width:0}.chat-embed .chat-send-btn{flex-shrink:0}.chat-embed .modal-content{height:80vh;display:flex;flex-direction:column}.chat-embed .modal-body{flex:1;overflow:hidden;padding:0}.chat-embed #user-list{flex:1;overflow-y:auto;max-height:none}.chat-embed #user-list:after{display:none;content:""}