:root{--midnight: #0a0806;--charcoal: #141210;--bark: #1e1a16;--drift: #2c251e;--sand: #c4a882;--gold: #d4943a;--amber: #e8a84c;--ivory: #f0ebe3;--border: rgba(255,255,255,.07)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{font-family:Instrument Sans,sans-serif;background:var(--midnight);color:var(--ivory);font-size:14px;-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;height:100dvh}#top-bar{display:flex;align-items:center;gap:12px;padding:0 16px;height:52px;background:var(--charcoal);border-bottom:1px solid var(--border);flex-shrink:0;z-index:10}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}.logo img{height:22px;opacity:.9}.logo-label{font-size:11px;letter-spacing:.14em;color:var(--gold);font-weight:600;text-transform:uppercase}.bar-divider{width:1px;height:20px;background:var(--border);flex-shrink:0}.channel-filters{display:flex;gap:4px;flex:1;overflow-x:auto}.ch-filter{display:flex;align-items:center;gap:5px;padding:4px 11px;border-radius:100px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid transparent;background:transparent;color:var(--sand);transition:all .15s;white-space:nowrap;flex-shrink:0}.ch-filter:hover{background:var(--bark);color:var(--ivory)}.ch-filter.active{background:var(--bark);border-color:var(--border);color:var(--ivory)}.ch-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;display:inline-block}#main{display:flex;flex:1;overflow:hidden}#sidebar{width:300px;flex-shrink:0;display:flex;flex-direction:column;background:var(--charcoal);border-right:1px solid var(--border);overflow:hidden}.status-tabs{display:flex;padding:10px 10px 0;gap:2px;flex-shrink:0}.status-tab{flex:1;padding:7px 4px;text-align:center;font-size:12px;font-weight:500;cursor:pointer;border-radius:8px 8px 0 0;color:var(--sand);border:1px solid transparent;border-bottom:none;background:transparent;transition:all .15s;display:flex;align-items:center;justify-content:center;gap:4px;white-space:nowrap}.tab-count{display:inline-flex;align-items:center;justify-content:center;min-width:16px;height:16px;padding:0 4px;border-radius:8px;font-size:10px;font-weight:700;background:var(--drift);color:var(--sand)}.status-tab.active{color:var(--ivory);background:var(--bark);border-color:var(--border)}.status-tab.active .tab-count{background:var(--gold);color:var(--midnight)}.search-box{padding:10px;flex-shrink:0}.search-wrap{position:relative}.search-input{width:100%;padding:8px 12px 8px 34px;background:var(--bark);border:1px solid var(--border);border-radius:8px;color:var(--ivory);font-size:13px;font-family:inherit;outline:none;transition:border-color .15s}.search-input:focus{border-color:#d4943a66}.search-input::placeholder{color:#c4a88259}.search-icon{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--sand);opacity:.45;pointer-events:none}#conv-list{flex:1;overflow-y:auto;padding:0 8px 8px}#conv-list::-webkit-scrollbar{width:3px}#conv-list::-webkit-scrollbar-thumb{background:var(--drift);border-radius:3px}.conv-item{display:flex;align-items:flex-start;gap:10px;padding:10px;border-radius:10px;cursor:pointer;margin-bottom:2px;transition:background .1s;border:1px solid transparent}.conv-item:hover{background:var(--bark)}.conv-item.active{background:var(--drift);border-color:#d4943a33}.conv-avatar{width:38px;height:38px;border-radius:50%;background:var(--drift);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--sand);flex-shrink:0;letter-spacing:.04em}.conv-body{flex:1;min-width:0}.conv-top{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-bottom:4px}.conv-name{font-weight:600;font-size:13px;color:var(--ivory);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{font-size:11px;color:var(--sand);opacity:.5;white-space:nowrap;flex-shrink:0}.conv-bottom{display:flex;align-items:center;gap:6px}.conv-preview{font-size:12px;color:var(--sand);opacity:.65;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.conv-unread{flex-shrink:0;min-width:18px;height:18px;padding:0 4px;border-radius:9px;background:var(--gold);color:var(--midnight);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}.conv-empty{padding:24px 12px;text-align:center;font-size:12px;color:var(--sand);opacity:.45}#thread-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--midnight)}#empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--sand);opacity:.35;text-align:center;padding:40px}#empty-state p{font-size:13px;margin-top:4px}#thread-header{display:none;align-items:center;gap:12px;padding:10px 20px;background:var(--charcoal);border-bottom:1px solid var(--border);flex-shrink:0}#thread-header.visible{display:flex}.thread-avatar{width:38px;height:38px;border-radius:50%;background:var(--drift);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--sand);flex-shrink:0;letter-spacing:.04em}.thread-info{flex:1;min-width:0}.thread-name{font-weight:600;font-size:14px;color:var(--ivory);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thread-meta{display:flex;align-items:center;gap:8px;margin-top:3px}.thread-channel-label{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--sand);opacity:.7}.status-badge{padding:2px 8px;border-radius:100px;font-size:11px;font-weight:600;letter-spacing:.04em}.status-badge.open{background:#22c55e26;color:#4ade80}.status-badge.pending{background:#f59e0b26;color:#fbbf24}.status-badge.resolved{background:#6b728033;color:#9ca3af}.thread-actions{display:flex;gap:8px;flex-shrink:0}.action-btn{padding:6px 14px;border-radius:8px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid var(--border);background:var(--bark);color:var(--sand);font-family:inherit;transition:all .15s;white-space:nowrap}.action-btn:hover{background:var(--drift);color:var(--ivory)}.action-btn.primary{background:var(--gold);color:var(--midnight);border-color:transparent;font-weight:600}.action-btn.primary:hover{background:var(--amber)}#messages{flex:1;overflow-y:auto;padding:24px 20px;display:none;flex-direction:column;gap:12px}#messages.visible{display:flex}#messages::-webkit-scrollbar{width:3px}#messages::-webkit-scrollbar-thumb{background:var(--bark);border-radius:3px}.date-divider{text-align:center;font-size:11px;color:var(--sand);opacity:.35;letter-spacing:.08em;padding:8px 0}.msg-row{display:flex;gap:10px;align-items:flex-end}.msg-row.staff{flex-direction:row-reverse}.msg-avatar-sm{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:600;flex-shrink:0}.msg-row.customer .msg-avatar-sm{background:var(--drift);color:var(--sand)}.msg-row.staff .msg-avatar-sm{background:#d4943a26;color:var(--gold)}.msg-content{max-width:68%;display:flex;flex-direction:column;gap:4px}.msg-row.staff .msg-content{align-items:flex-end}.msg-bubble{padding:10px 14px;border-radius:14px;font-size:13px;line-height:1.55;word-break:break-word;white-space:pre-wrap}.msg-row.customer .msg-bubble{background:var(--bark);color:var(--ivory);border-bottom-left-radius:4px}.msg-row.staff .msg-bubble{background:#d4943a1a;border:1px solid rgba(212,148,58,.18);color:var(--ivory);border-bottom-right-radius:4px}.msg-time{font-size:10px;color:var(--sand);opacity:.4;padding:0 2px}#reply-bar{display:none;flex-direction:column;gap:8px;padding:12px 20px 16px;background:var(--charcoal);border-top:1px solid var(--border);flex-shrink:0}#reply-bar.visible{display:flex}.reply-note{font-size:11px;color:var(--sand);opacity:.45}.reply-row{display:flex;gap:10px;align-items:flex-end}#reply-input{flex:1;padding:10px 14px;background:var(--bark);border:1px solid var(--border);border-radius:10px;color:var(--ivory);font-size:13px;font-family:inherit;resize:none;outline:none;min-height:42px;max-height:120px;line-height:1.5;transition:border-color .15s}#reply-input:focus{border-color:#d4943a66}#reply-input::placeholder{color:#c4a8824d}.send-btn{width:42px;height:42px;border-radius:10px;background:var(--gold);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}.send-btn:hover{background:var(--amber)}#back-btn{display:none}@media(max-width:640px){#sidebar{width:100%;position:absolute;inset:52px 0 0;z-index:5}#thread-panel{position:absolute;inset:52px 0 0;z-index:6;transform:translate(100%);transition:transform .25s ease}#thread-panel.mobile-open{transform:translate(0)}#back-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:var(--bark);border:1px solid var(--border);cursor:pointer;color:var(--ivory);flex-shrink:0}.thread-actions .action-btn:not(.primary){display:none}.ch-filter .ch-label{display:none}}