:root{font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:#17232d;background:#eef3f6;--green:#075e54;--green2:#128c7e;--mint:#d9fdd3;--line:#e2e8ec;--muted:#667781}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(135deg,#dce9e7,#f4f7f8)}button,input,textarea{font:inherit}.messenger-shell{width:min(1440px,100%);height:100vh;margin:auto;display:grid;grid-template-columns:370px 1fr;background:#fff;box-shadow:0 12px 50px #15352e22;overflow:hidden}.conversation-pane{display:flex;min-width:0;flex-direction:column;border-right:1px solid var(--line);background:#fff}.brand-bar,.chat-header{height:72px;display:flex;align-items:center;gap:12px;padding:10px 16px;background:var(--green);color:#fff}.brand-bar img{width:44px;height:44px;border-radius:50%;background:#fff;object-fit:cover}.brand-bar div,.chat-header div{display:flex;flex:1;min-width:0;flex-direction:column}.brand-bar strong,.chat-header strong{font-size:16px}.brand-bar small,.chat-header small{opacity:.8;margin-top:2px}.back-link,.icon-button{display:grid;place-items:center;width:40px;height:40px;border:0;border-radius:50%;color:inherit;background:#ffffff18;text-decoration:none;font-size:27px;cursor:pointer}.profile-row{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line);background:#f8fafb}.avatar{display:grid;place-items:center;flex:0 0 42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#22a699,#075e54);color:#fff;font-weight:750}.profile-row label{display:flex;min-width:0;flex:1;flex-direction:column}.profile-row label span{font-size:11px;color:var(--muted)}.profile-row input{width:100%;border:0;border-bottom:1px solid transparent;background:transparent;font-weight:650;outline:none}.profile-row input:focus{border-color:var(--green2)}.online-dot{width:10px;height:10px;border-radius:50%;background:#27c46b;box-shadow:0 0 0 3px #d8f8e5}.search-box{display:flex;align-items:center;gap:8px;margin:10px 12px;padding:9px 12px;border-radius:20px;background:#f0f2f5;color:var(--muted)}.search-box input{width:100%;border:0;outline:0;background:transparent}.conversation-list{flex:1;overflow:auto}.conversation-item{width:100%;display:grid;grid-template-columns:48px 1fr auto;gap:12px;align-items:center;padding:13px 14px;border:0;border-bottom:1px solid #f0f2f3;background:#fff;text-align:left;cursor:pointer}.conversation-item:hover,.conversation-item.active{background:#f0f7f5}.conversation-copy{min-width:0}.conversation-copy strong,.conversation-copy span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-copy span{margin-top:4px;font-size:13px;color:var(--muted)}.conversation-meta{align-self:start;color:#84929a;font-size:11px}.connection-status{padding:8px 14px;background:#f7f9fa;color:var(--muted);font-size:11px;text-align:center}.chat-pane{min-width:0;background:#efeae2}.empty-state{height:100%;display:grid;place-content:center;justify-items:center;padding:30px;text-align:center;background:#f8faf9}.empty-icon{font-size:70px}.empty-state h1{margin:16px 0 4px;color:var(--green)}.empty-state p{color:var(--muted)}.empty-state button,.dialog-actions button:last-child{padding:11px 18px;border:0;border-radius:8px;background:var(--green2);color:#fff;font-weight:700;cursor:pointer}.active-chat{height:100%;display:grid;grid-template-rows:72px 1fr auto}.chat-header{background:#f0f2f5;color:#1d2a30;border-bottom:1px solid #d9dfe2}.chat-header .avatar{flex-basis:44px}.secure-label{font-size:12px;color:var(--green);font-weight:700}.messages{overflow-y:auto;padding:22px clamp(18px,6vw,80px);background-color:#efeae2;background-image:radial-gradient(#436d6410 1px,transparent 1px);background-size:18px 18px}.message-row{display:flex;margin:4px 0}.message-row.mine{justify-content:flex-end}.bubble{max-width:min(72%,660px);padding:7px 10px 6px;border-radius:9px;background:#fff;box-shadow:0 1px 1px #00000014;overflow-wrap:anywhere}.mine .bubble{background:var(--mint)}.sender{display:block;margin-bottom:3px;color:#08776a;font-size:12px;font-weight:750}.bubble p{margin:0;white-space:pre-wrap;line-height:1.38}.bubble time{display:block;margin:3px 0 -2px;text-align:right;color:#77878d;font-size:10px}.day-marker{text-align:center;margin:14px}.day-marker span{padding:5px 10px;border-radius:7px;background:#fff;color:#607078;font-size:11px;box-shadow:0 1px 2px #0001}.composer{display:flex;align-items:flex-end;gap:10px;padding:10px 16px max(10px,env(safe-area-inset-bottom));background:#f0f2f5}.composer textarea{flex:1;min-height:44px;max-height:130px;resize:none;padding:11px 16px;border:1px solid transparent;border-radius:22px;outline:0}.composer textarea:focus{border-color:#95cfc7}.composer button{width:46px;height:46px;border:0;border-radius:50%;background:var(--green2);color:#fff;font-size:19px;cursor:pointer}.composer button:disabled{opacity:.5}dialog{width:min(420px,calc(100% - 28px));border:0;border-radius:16px;padding:0;box-shadow:0 24px 80px #0005}dialog::backdrop{background:#061b17aa}dialog form{padding:26px}.dialog-icon{font-size:38px}dialog h2{margin:8px 0}dialog p{color:var(--muted)}dialog label{display:grid;gap:7px;font-weight:650}dialog input{width:100%;padding:11px;border:1px solid #bcc8cd;border-radius:8px;outline:0}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:24px}.dialog-actions button{padding:10px 16px;border:0;border-radius:8px;cursor:pointer}.mobile-only{display:none}.notice{padding:22px;color:var(--muted);text-align:center}.error{color:#b42318}
@media(max-width:760px){.messenger-shell{grid-template-columns:1fr}.conversation-pane{grid-column:1;grid-row:1}.chat-pane{display:none;grid-column:1;grid-row:1}.messenger-shell.chat-open .conversation-pane{display:none}.messenger-shell.chat-open .chat-pane{display:block}.mobile-only{display:grid}.secure-label{display:none}.messages{padding:16px 10px}.bubble{max-width:86%}.brand-bar,.chat-header{height:64px}.active-chat{grid-template-rows:64px 1fr auto}}