*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:#eef5fb;color:#23313d}.app{width:min(1100px,100vw);height:100vh;margin:auto;background:#fff;box-shadow:0 0 30px #0002;display:flex;flex-direction:column}.topbar{height:56px;background:linear-gradient(#fff,#e7f1f8);border-bottom:1px solid #b9cbd8;display:flex;align-items:center;justify-content:space-between;padding:0 20px}.brand{font-size:20px;color:#1684c5}.brand:first-letter{font-size:28px}.status{font-size:13px;padding:6px 10px;border-radius:12px}.online{background:#e5f7e8;color:#28753b}.offline{background:#f5eeee;color:#8a4444}.layout{display:flex;min-height:0;flex:1}.sidebar{width:290px;background:#f2f7fb;border-right:1px solid #c7d7e2;padding:18px}.profile{display:flex;gap:12px;align-items:center;padding-bottom:20px}.avatar{width:46px;height:46px;border-radius:5px;background:#2b9bd0;color:#fff;display:grid;place-items:center;font-size:22px;font-weight:bold;object-fit:cover;cursor:pointer}.contact-avatar{width:34px;height:34px;border-radius:5px;background:#2b9bd0;color:#fff;display:grid;place-items:center;font-size:15px;font-weight:bold;object-fit:cover;flex:none}.profile input{border:1px solid #b8cbd7;border-radius:4px;padding:7px;width:190px;font-size:14px}.sub{font-size:11px;color:#6b7c87;margin-top:4px}.section-title{font-size:11px;color:#66808e;font-weight:bold;border-bottom:1px solid #d2dfe7;padding-bottom:7px}.section-title span{float:right}.contacts{padding-top:7px}.contact{display:flex;align-items:center;gap:9px;padding:9px 7px;border-radius:5px;cursor:pointer;transition:background .12s}.contact:hover{background:#e3eff7}.contact.selected{background:#d7ebf7;border:1px solid #bdd9e8}.contact.self{opacity:.75}.dot{width:9px;height:9px;border-radius:50%;background:#54b95c;flex:none}.contact small{display:block;color:#73828b;font-size:10px;margin-top:2px}.tip{font-size:11px;color:#71818a;line-height:1.45;margin-top:22px;border-top:1px solid #d2dfe7;padding-top:12px}.chat{flex:1;display:flex;flex-direction:column;min-width:0}.chat-head{height:67px;padding:12px 18px;border-bottom:1px solid #d4e0e7;display:flex;justify-content:space-between;align-items:center}.chat-head h1{font-size:17px;margin:0 0 2px}.chat-head span{font-size:12px;color:#71808a}.chat-head button{border:1px solid #bacbd5;background:#fff;border-radius:4px;padding:6px 10px;color:#66757d}.messages{flex:1;overflow:auto;padding:18px;background:linear-gradient(180deg,#fff,#f8fbfd)}.message{margin:8px 0;max-width:75%}.message.mine{margin-left:auto}.meta{font-size:11px;color:#71818a;margin-bottom:3px}.bubble{display:inline-block;padding:9px 12px;border-radius:7px;background:#e8f2f8;border:1px solid #d3e2eb;white-space:pre-wrap;word-break:break-word}.mine .bubble{background:#dff3d9;border-color:#c7e2c0}.system{text-align:center;color:#88959d;font-size:11px;margin:12px}.typing{height:20px;padding:0 18px;font-size:11px;color:#71818a}.composer{display:flex;padding:12px;border-top:1px solid #ccdbe4;background:#f2f7fa}.composer input{flex:1;border:1px solid #b8cbd7;padding:10px;border-radius:4px 0 0 4px;outline:none}.composer button{border:1px solid #1684c5;background:#1684c5;color:#fff;padding:0 20px;border-radius:0 4px 4px 0}@media(max-width:700px){.sidebar{width:220px}.profile input{width:130px}}@media(max-width:520px){.sidebar{display:none}.topbar{height:50px}}

.avatar-image{width:100%;height:100%;border-radius:5px;object-fit:cover;display:block}

.chat-actions{display:flex;gap:7px;align-items:center}.chat-actions button{border:1px solid #bacbd5;background:#fff;border-radius:4px;padding:6px 10px;color:#66757d;cursor:pointer}.chat-actions button:hover{background:#edf6fb}.chat-actions #attention{color:#1684c5;border-color:#a9cfdf}.chat-actions #attention:disabled{opacity:.55;cursor:not-allowed}.attention-shake{animation:msn-shake .55s ease-in-out 0s 2}.attention-flash{animation:msn-flash .8s ease-in-out 0s 2}@keyframes msn-shake{0%,100%{transform:translate(0,0) rotate(0)}15%{transform:translate(-7px,2px) rotate(-1deg)}30%{transform:translate(7px,-2px) rotate(1deg)}45%{transform:translate(-6px,-1px) rotate(-1deg)}60%{transform:translate(6px,1px) rotate(1deg)}75%{transform:translate(-3px,0) rotate(0)}90%{transform:translate(3px,0) rotate(0)}}@keyframes msn-flash{0%,100%{filter:none}50%{filter:brightness(1.16)}}@media(max-width:600px){.chat-actions #clear{display:none}.chat-actions #attention{font-size:12px;padding:6px 8px}}