:root{color-scheme:light;--ink:#28241f;--muted:#716a60;--line:#e9e5de;--paper:#f7f5f1}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:white;font:15px/1.5 system-ui,-apple-system,sans-serif}a{color:inherit}button,input,textarea{font:inherit;color:inherit}button,a,input,textarea{touch-action:manipulation}button{cursor:pointer;background:white;border:1px solid var(--line);border-radius:8px;padding:10px 14px}button:hover{background:var(--paper)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--ink);outline-offset:3px}.primary{background:var(--ink);color:white;border-color:var(--ink)}.primary:hover{background:#464036}.brand{font-size:34px;font-weight:750;letter-spacing:-2px;text-decoration:none}.brand small{display:block;font-size:11px;letter-spacing:0;font-weight:400}.eyebrow{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}.fine{font-size:12px;color:var(--muted)}h1,h2,p{margin-top:0}h1{letter-spacing:-.04em}input,textarea{border:1px solid var(--line);border-radius:8px;padding:12px;width:100%;background:white}label{display:block;margin-bottom:8px}.login-page>.brand{display:block;margin:28px 6vw}.login-card{max-width:420px;margin:40px auto;padding:24px}.welcome-face{display:block;margin-bottom:24px;border-radius:50%}.login-card h1{font-size:40px;margin-bottom:8px}.login-card form{margin:28px 0 16px}.login-card button{margin-top:12px;width:100%}.login-card .fine{margin-top:16px}.messenger-shell{display:grid;grid-template-columns:250px minmax(0,1fr);height:100dvh;max-width:1360px;margin:auto}.sidebar{padding:30px 24px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:8px}.sidebar>.brand{margin-bottom:32px}.sidebar>a:not(.brand),.sidebar button{font-size:13px;text-decoration:none;text-align:left;padding:12px;border:0}.sidebar .selected{background:var(--paper);border-radius:8px}.sidebar-bottom{margin-top:auto;display:grid;gap:12px}.sidebar-bottom a{font-size:12px;padding:0 12px}.conversation{min-width:0;display:flex;flex-direction:column;min-height:0}.chat-heading{display:flex;align-items:center;gap:12px;padding:20px 32px;border-bottom:1px solid var(--line)}.chat-heading img{border-radius:50%}.chat-heading h1{font-size:23px;margin:0}.chat-heading p{font-size:12px;color:var(--muted);margin:0}.chat-heading button{margin-left:auto;font-size:12px}.demo-strip{font-size:11px;text-align:center;color:var(--muted);padding:9px;background:var(--paper);margin:0}#thread{flex:1;overflow-y:auto;padding:32px max(24px,calc((100% - 700px)/2));overscroll-behavior:contain}.bubble{max-width:85%;width:fit-content;background:var(--paper);padding:14px 18px;border-radius:4px 18px 18px;margin-bottom:18px;white-space:pre-wrap;overflow-wrap:anywhere}.bubble b{display:block;font-size:11px;margin-bottom:5px;color:var(--muted)}.bubble.owner{margin-left:auto;background:var(--ink);color:white;border-radius:18px 4px 18px 18px}.bubble.owner b{color:#ddd7ce}.bubble a{display:block;font-size:13px;margin-top:12px}.bubble img,.bubble video{max-width:100%;max-height:200px;display:block;border-radius:8px;margin-top:8px}.composer-area{padding:12px 32px 20px;border-top:1px solid var(--line)}.suggestions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.suggestions button{font-size:12px;padding:7px 11px}#message-form{display:flex;gap:10px;align-items:center}#message-input{resize:vertical;max-height:140px;min-height:48px}.attach{font-size:28px;cursor:pointer;margin:0;padding:4px}#pending-files{font-size:12px;margin-bottom:8px}.composer-area .fine{margin:8px 0 0}dialog{border:1px solid var(--line);border-radius:14px;max-width:460px;width:calc(100% - 32px);padding:28px;color:var(--ink)}dialog::backdrop{background:#28241f55}dt{font-weight:600;margin-top:16px}dd{margin:4px 0;color:var(--muted);font-size:13px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(max-width:700px){.messenger-shell{grid-template-columns:1fr}.sidebar{padding:10px 16px;flex-direction:row;flex-wrap:wrap;border-right:0;border-bottom:1px solid var(--line);gap:4px}.sidebar>.brand,.sidebar>.eyebrow,.sidebar>.selected,.sidebar>button{display:none}.sidebar>a:not(.brand){padding:4px;font-size:11px}.sidebar-bottom{margin:0 0 0 auto;display:flex;align-items:center}.sidebar-bottom button,.sidebar-bottom>a:first-child{display:none}.sidebar-bottom a{font-size:11px;padding:4px}.messenger-shell{grid-template-rows:auto minmax(0,1fr)}.chat-heading{padding:14px 18px}#thread{padding:22px 16px}.composer-area{padding:12px 14px}.bubble{max-width:92%}.suggestions{gap:5px}.suggestions button{font-size:11px}.login-card{margin:16px auto}.demo-strip{font-size:10px}}@media(prefers-reduced-motion:no-preference){button{transition:background-color .12s}}