html,body,#root{height:100%}*{box-sizing:border-box;margin:0;padding:0}body{background:#f0f2f5;justify-content:center;align-items:center;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}.chat-container{background:#fff;border-radius:12px;flex-direction:column;width:480px;height:600px;display:flex;overflow:hidden;box-shadow:0 4px 24px #0000001f}.chat-header{color:#fff;background:#4f46e5;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.chat-header h1{font-size:1.1rem;font-weight:600}.status{border-radius:999px;padding:3px 10px;font-size:.75rem;font-weight:500}.status.online{background:#22c55e}.status.offline{background:#ef4444}.messages{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.message{word-break:break-word;background:#f1f5f9;border-radius:8px;padding:10px 14px}.message.own{text-align:right;background:#ede9fe;align-self:flex-end}.message.private{border-left:3px solid #f59e0b}.message.own.private{border-left:none;border-right:3px solid #f59e0b}.dm-label{color:#f59e0b;text-transform:uppercase;letter-spacing:.05em;margin-bottom:2px;font-size:.7rem;font-weight:600;display:block}.sender{color:#4f46e5;margin-right:6px;font-weight:600}.content{color:#1e293b}.typing-bar{color:#64748b;min-height:20px;padding:2px 16px;font-size:.78rem;font-style:italic}.input-area{background:#fff;border-top:1px solid #e2e8f0;gap:8px;padding:8px 16px 12px;display:flex}.sender-input{flex-shrink:0;width:90px}.recipient-input{flex-shrink:0;width:130px}.message-input{flex:1}input{border:1px solid #cbd5e1;border-radius:8px;outline:none;padding:9px 12px;font-size:.9rem;transition:border-color .15s}input:focus{border-color:#4f46e5}button{color:#fff;cursor:pointer;background:#4f46e5;border:none;border-radius:8px;padding:9px 18px;font-size:.9rem;font-weight:500;transition:background .15s}button:hover:not(:disabled){background:#4338ca}button:disabled{cursor:not-allowed;background:#a5b4fc}