.ticket-workspace{display:grid;grid-template-columns:clamp(230px,32%,310px) minmax(0,1fr);height:clamp(520px,73dvh,820px);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.chat-sidebar{display:flex;flex-direction:column;min-height:0;border-inline-end:1px solid var(--line)}
.chat-list-heading{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:18px 16px}.chat-list-heading h2{font-size:18px}
.chat-search{padding:0 16px 14px;border-bottom:1px solid var(--line)}.chat-search label{margin:0;font-size:12px}.chat-search>div{display:flex;gap:6px;margin:5px 0 10px}.chat-search input{min-width:0;margin:0}.chat-search select{margin:5px 0 0}
.chat-list{overflow:auto;flex:1}.chat-ticket{display:block;width:100%;text-align:start;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:16px;background:transparent;color:var(--ink);font-weight:400}.chat-ticket:hover:not(:disabled),.chat-ticket.selected{background:var(--surface-soft)}
.chat-ticket-title{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-weight:700;overflow-wrap:anywhere}.chat-preview{display:block;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;color:var(--muted);font-size:13px;margin:4px 0}.chat-owner{display:block;overflow-wrap:anywhere;font-size:12px;color:var(--muted)}.chat-ticket-meta{display:block;font-size:11px;color:var(--muted)}.chat-unread{flex:none;background:var(--green);color:var(--on-green);font-size:11px;min-width:21px;text-align:center;border-radius:10px;padding:0 5px}
.chat-pagination{display:flex;align-items:center;gap:2px;border-top:1px solid var(--line);padding:8px 10px;font-size:12px;flex-wrap:wrap}.chat-pagination span{margin-inline-end:auto}.chat-pagination button{font-size:12px;padding:6px 9px}
.chat-detail,.chat-conversation{min-height:0;min-width:0;height:100%}.chat-conversation{display:flex;flex-direction:column;position:relative}.chat-heading{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px 20px;border-bottom:1px solid var(--line)}.chat-heading>div{flex:1;min-width:150px}.chat-heading h2{font-size:18px;overflow-wrap:anywhere}.chat-meta{font-size:12px;color:var(--muted);margin:4px 0 0}.chat-back{display:none}
.chat-messages{flex:1;min-height:0;overflow:auto;padding:20px;background:color-mix(in srgb,var(--paper) 45%,white);display:flex;flex-direction:column;gap:16px;overscroll-behavior:contain}.chat-message{max-width:80%;align-self:flex-start}.chat-message.own{align-self:flex-end}.chat-bubble{white-space:pre-wrap;overflow-wrap:anywhere;padding:12px 16px;background:var(--surface-soft);border-radius:12px;line-height:1.65}.chat-message.own .chat-bubble{background:var(--green);color:var(--on-green)}.chat-message.own .chat-meta{text-align:end}.chat-system{color:var(--muted);font-size:12px;align-self:center;text-align:center}.chat-older{border-bottom:1px solid var(--line);border-radius:0;font-size:12px}.chat-new-messages{align-self:center;font-size:12px;margin:6px}
.chat-composer{padding:12px 20px 16px;border-top:1px solid var(--line);background:var(--surface)}.chat-composer label{margin:0;font-size:12px}.chat-composer textarea{margin:6px 0 8px;min-height:64px;max-height:180px}.chat-composer>div{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.chat-composer small{color:var(--muted);font-size:11px}.chat-error:empty{display:none}.chat-error{padding:8px 16px;color:var(--danger);font-size:12px;background:var(--surface-warm)}.chat-closed{padding:20px;text-align:center;color:var(--muted);border-top:1px solid var(--line)}.chat-empty{padding:40px 24px;text-align:center;color:var(--muted)}.chat-detail>.chat-empty{display:flex;height:100%;align-items:center;justify-content:center;flex-direction:column;gap:8px}.chat-empty strong{color:var(--ink)}
#chatNewDialog{width:min(540px,calc(100vw - 24px));max-height:90dvh;overflow:auto}#chatNewDialog h2{margin-bottom:20px}
@media(max-width:760px){.ticket-workspace{display:block;height:auto;min-height:450px}.chat-sidebar{border:0;max-height:75dvh;min-height:450px}.chat-detail{display:none}.ticket-workspace.chat-selected{height:76dvh;min-height:450px}.chat-selected .chat-sidebar{display:none}.chat-selected .chat-detail{display:block}.chat-heading{padding:12px}.chat-heading h2{font-size:16px}.chat-heading>div{min-width:100px}.chat-back{display:block}.chat-heading button{font-size:12px;padding:8px 10px}.chat-messages{padding:14px}.chat-message{max-width:90%}.chat-composer{padding:10px 12px max(12px,env(safe-area-inset-bottom))}.chat-composer small{display:none}}
@media(prefers-reduced-motion:reduce){.ticket-workspace *{scroll-behavior:auto;transition:none}}
@media(max-width:760px){
  body:has(.ticket-workspace.chat-selected){overflow:hidden}
  .ticket-workspace.chat-selected{position:fixed;inset:var(--chat-top,0px) 0 auto;z-index:90;height:var(--chat-height,100dvh);min-height:0;border:0;border-radius:0}
  .chat-selected .chat-heading{padding-top:max(12px,env(safe-area-inset-top))}
}