.chat-layout{display:grid;grid-template-columns:280px minmax(0,1fr);min-height:560px;border:1px solid #d6e3e8;border-radius:6px;background:#fff;overflow:hidden}
.chat-sidebar{padding:16px;border-right:1px solid #d6e3e8;background:#f5f9fa;min-width:0}
.chat-heading{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-bottom:12px}
.chat-heading h2{font-size:18px;margin:0;letter-spacing:0}
.chat-heading p{font-size:12px;color:#647780;margin:6px 0;overflow-wrap:anywhere}
.chat-heading button{padding:8px;flex:none}
.chat-heading svg,#chatSend svg{width:18px;height:18px}
#chatSearch{width:100%;margin-bottom:12px;min-height:36px}
.chat-room{display:block;width:100%;text-align:left;background:transparent;color:#223a47;border:0;border-bottom:1px solid #dfe9ed;border-radius:0;padding:14px 10px}
.chat-room.active{background:#e2f2f4;border-left:3px solid #238b94}
.chat-room strong{display:block;overflow-wrap:anywhere;font-size:14px}
.chat-room small{display:block;font-size:12px;font-weight:400;color:#667b85;margin-top:7px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-unread{float:right;background:#14848f;color:white;font-size:11px;padding:2px 6px;border-radius:4px;margin-left:6px}
.chat-conversation{min-width:0;padding:20px;display:flex;flex-direction:column}
.chat-messages{height:400px;overflow:auto;padding:8px 6px;display:flex;flex-direction:column;gap:14px;overscroll-behavior:contain}
.chat-message{align-self:flex-start;max-width:85%;background:#f1f5f7;border-left:3px solid #7d9bb0;padding:11px 14px;border-radius:4px;overflow-wrap:anywhere}
.chat-message.mine{align-self:flex-end;background:#e5f4ef;border-color:#47a486}
.chat-message p{white-space:pre-wrap;margin:7px 0;font-size:14px;line-height:1.5}
.chat-message strong{font-size:12px}.chat-message time{font-size:11px;color:#627b84;display:block}
#chatSendForm{display:flex;gap:8px;align-items:flex-end;margin-top:14px;border-top:1px solid #dfebed;padding-top:14px}
#chatText{width:100%;min-width:0;resize:vertical;border:1px solid #cfdfe5;border-radius:4px;padding:10px;font:inherit;font-size:14px;max-height:160px}
#chatSend{height:42px;width:42px;padding:10px;flex:none}
#chatStatus{font-size:12px;min-height:18px;margin:8px 0 0;color:#677e89}
#chatStatus.error,#chatCreateStatus.error{color:#ae372c}
#chatCreateDialog{width:520px;max-width:calc(100vw - 30px);border:1px solid #cfdde4;border-radius:6px;padding:24px}
#chatCreateDialog::backdrop{background:rgba(16,42,57,.35)}
#chatCreateForm label{display:block;font-size:14px;margin:12px 0}#chatRoomTitle{display:block;width:100%;margin-top:8px}
#chatCreateForm fieldset{border:1px solid #d9e4e9;margin:18px 0;padding:12px;border-radius:4px;max-height:260px;overflow:auto}
#chatPeople label{display:flex;align-items:center;gap:10px}#chatPeople input{width:18px;min-height:18px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:700px){.chat-layout{grid-template-columns:1fr;min-height:0}.chat-sidebar{border-right:0;border-bottom:1px solid #d6e3e8}.chat-sidebar #chatRooms{max-height:170px;overflow:auto}.chat-conversation{padding:14px}.chat-messages{height:360px}.chat-message{max-width:95%}.chat-heading h2{font-size:16px}}