:root{--bg: #0f1115;--surface: #1a1d24;--surface-2: #21242c;--border: #2b2f3a;--text: #e6e8ec;--muted: #98a2b3;--primary: #3b82f6;--primary-hover: #2f6fe0;--danger: #f87171;--radius: 10px;--font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}.muted{color:var(--muted)}.center-screen{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px}.card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;display:flex;flex-direction:column;gap:8px}.card-title{margin:0;font-size:20px;font-weight:650}.form{margin-top:12px;display:flex;flex-direction:column;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:13px;color:var(--muted)}.input{width:100%;padding:10px 12px;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;color:var(--text);font:inherit;outline:none}.input:focus-visible{border-color:var(--primary);box-shadow:0 0 0 3px #3b82f640}.input[aria-invalid=true]{border-color:var(--danger)}.form-error{margin:0;color:var(--danger);font-size:13px}.btn{padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--surface-2);color:var(--text);font:inherit;cursor:pointer;transition:background .12s ease,border-color .12s ease}.btn:hover:not(:disabled){background:#2a2e38}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}.btn-primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.app-shell{height:100%;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--surface)}.app-header-title{margin:0;font-size:17px;font-weight:650}.app-header-side{display:flex;align-items:center;gap:14px}.app-main{flex:1;display:flex;align-items:center;justify-content:center;padding:24px}.empty-state{max-width:420px;text-align:center}.spinner{width:22px;height:22px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}}.conn{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}.conn-dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.conn-online .conn-dot{background:#34d399}.conn-connecting .conn-dot{background:#fbbf24;animation:pulse 1.2s ease-in-out infinite}.conn-offline .conn-dot{background:var(--danger)}@keyframes pulse{50%{opacity:.35}}@media(prefers-reduced-motion:reduce){.conn-connecting .conn-dot{animation:none}}.workspace{flex:1;min-height:0;display:grid;grid-template-columns:minmax(280px,360px) 1fr}.dialog-list{display:flex;flex-direction:column;min-height:0;border-right:1px solid var(--border);background:var(--surface)}.dialog-list-controls{display:flex;flex-direction:column;gap:10px;padding:12px;border-bottom:1px solid var(--border)}.filter-row{display:flex;flex-wrap:wrap;gap:6px}.chip{padding:4px 10px;border:1px solid var(--border);border-radius:999px;background:var(--surface-2);color:var(--muted);font:inherit;font-size:13px;cursor:pointer}.chip.is-active{background:var(--primary);border-color:var(--primary);color:#fff}.chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.dialog-list-body{flex:1;min-height:0;overflow-y:auto}.dialog-items{list-style:none;margin:0;padding:0}.dialog-item{width:100%;display:flex;flex-direction:column;gap:6px;padding:12px 14px;border:none;border-bottom:1px solid var(--border);border-left:3px solid transparent;background:transparent;color:var(--text);font:inherit;text-align:left;cursor:pointer}.dialog-item:hover{background:var(--surface-2)}.dialog-item.is-active{background:var(--surface-2);border-left-color:var(--primary)}.dialog-item:focus-visible{outline:2px solid var(--primary);outline-offset:-2px}.dialog-item-top{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.dialog-item-title{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dialog-item-time{flex-shrink:0;font-size:12px}.dialog-item-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}.list-note{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:16px 14px}.dialog-list-footer{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-top:1px solid var(--border);font-size:13px}.pager{display:flex;align-items:center;gap:8px}.btn-sm{padding:5px 10px;font-size:13px}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.5;white-space:nowrap}.badge-status{border:1px solid var(--border);color:var(--muted);background:var(--surface-2)}.badge-open{color:#93c5fd;border-color:#1e3a5f}.badge-in_progress{color:#fcd34d;border-color:#4a3a12}.badge-closed{color:var(--muted)}.badge-unread{background:var(--primary);color:#fff;min-width:20px;justify-content:center}.badge-cat{background:var(--surface-2);border:1px solid var(--border);color:var(--muted)}.dialog-view{display:flex;flex-direction:column;min-height:0}.dialog-view.is-empty{align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center}.dialog-view-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border);background:var(--surface)}.dialog-view-title{margin:0;font-size:16px;font-weight:650}.dialog-view-sub{font-size:13px}.dialog-view-head-side{display:flex;align-items:center;gap:8px;flex-shrink:0}.dialog-view-meta{display:flex;align-items:center;gap:14px;padding:8px 18px;font-size:12px;border-bottom:1px solid var(--border)}.link{color:var(--primary);text-decoration:none}.link:hover{text-decoration:underline}.history{flex:1;min-height:0;overflow-y:auto;padding:16px 18px}.history-empty{flex:1;display:flex;align-items:center;justify-content:center;padding:24px}.history-items{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.msg{display:flex}.msg-in{justify-content:flex-start}.msg-out{justify-content:flex-end}.msg-system{justify-content:center}.msg-bubble{max-width:min(680px,78%);display:flex;flex-direction:column;gap:3px;padding:8px 12px;border-radius:12px;background:var(--surface);border:1px solid var(--border)}.msg-in .msg-bubble{border-bottom-left-radius:4px}.msg-out .msg-bubble{background:#1e3a5f;border-color:#24507f;border-bottom-right-radius:4px}.msg-system .msg-bubble{background:transparent;border-style:dashed;max-width:90%}.msg-author{font-size:11px;font-weight:600;color:var(--muted)}.msg-text{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.msg-attachment{margin:0;font-style:italic}.msg-time{align-self:flex-end;font-size:11px}.msg-attachments{display:flex;flex-direction:column;gap:6px;margin:2px 0}.attach{display:inline-flex}.attach-image{display:block}.attach-image img{max-width:260px;max-height:260px;border-radius:8px;display:block}.attach-image.is-loading{width:200px;height:120px;border-radius:8px;background:var(--surface-2);border:1px solid var(--border)}.attach-file,.attach-error{display:inline-flex;align-items:center;gap:8px;font-size:13px}a.attach-file{color:var(--primary);text-decoration:none}a.attach-file:hover{text-decoration:underline}.msg-foot{display:flex;align-items:center;justify-content:space-between;gap:10px}.msg-status{font-size:11px;color:var(--muted);white-space:nowrap}.msg-status-sent{color:#93c5fd}.msg-status-delivered{color:#34d399}.msg-status-failed{color:var(--danger)}.msg-bubble.is-failed{border-color:var(--danger)}.msg-retry{display:flex;align-items:center;gap:8px;margin-top:4px;flex-wrap:wrap}.ticket-actions{display:flex;flex-direction:column;gap:6px;padding:10px 18px;border-bottom:1px solid var(--border);background:var(--surface)}.ticket-actions-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.ticket-actions-assign{display:flex;align-items:center;gap:6px}.ticket-actions-close{margin-left:auto}.input-sm{width:auto;padding:5px 10px;font-size:13px}.ticket-actions-error{margin:0;font-size:13px;color:var(--danger)}.ticket-actions-error.muted{color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.composer{display:flex;flex-direction:column;gap:8px;padding:10px 14px;border-top:1px solid var(--border);background:var(--surface)}.composer-row{display:flex;align-items:flex-end;gap:8px}.composer-text{flex:1;min-height:40px;max-height:160px;resize:vertical;line-height:1.4}.composer-attach{flex-shrink:0}.composer-file-input{display:none}.composer-file{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.composer-file-remove{border:none;background:transparent;color:var(--muted);cursor:pointer;font-size:18px;line-height:1;padding:0 4px}.composer-file-remove:hover{color:var(--text)}.composer-closed{padding:14px 18px;border-top:1px solid var(--border);text-align:center}@media(max-width:720px){.workspace{grid-template-columns:1fr}}