:root{font-family:Inter,Segoe UI,system-ui,sans-serif;color:#172e36;background:#f4f7f6;font-synthesis:none;--accent:#126759;--muted:#64777b;--border:#dce5e2}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button{border:0;background:var(--accent);color:#fff;border-radius:9px;padding:11px 18px;cursor:pointer;font-weight:600}button:hover{filter:brightness(.93)}button:disabled{opacity:.5;cursor:wait}.secondary{background:#edf2f0;color:#254b44;border:1px solid var(--border)}input,textarea,select{width:100%;border:1px solid #c9d7d2;background:#fff;border-radius:8px;padding:11px;color:inherit}input:focus,textarea:focus,select:focus{outline:2px solid #74b6a7;outline-offset:2px}label{display:block;font-size:14px;font-weight:550;margin:12px 0}label input{margin-top:7px}input[type=checkbox]{width:auto}p{line-height:1.65;color:var(--muted)}h1{font-size:30px;letter-spacing:-1px;margin:6px 0}h2{font-size:20px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:700;color:var(--muted)}.mark{display:inline-grid;place-items:center;width:36px;height:36px;color:#fff;background:var(--accent);border-radius:12px;font-size:22px;font-weight:700}.login{min-height:100dvh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at 80% 20%,#d3e7df,transparent 55%),#f4f7f6}.login-card{max-width:460px;width:100%;padding:40px;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:0 20px 80px #174b3412}.login-card h1{font-size:34px;line-height:1.2;margin:20px 0}.login-card button{width:100%;margin-top:12px}.error{color:#a03338}#shell{display:grid;grid-template-columns:245px 1fr;min-height:100dvh}#shell[hidden],section[hidden],[hidden]{display:none!important}aside{position:sticky;top:0;height:100dvh;display:flex;flex-direction:column;padding:26px 18px;background:#fff;border-right:1px solid 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10px}.brand{font-size:13px}}@media(max-width:600px){#shell{display:block}aside{position:relative;width:100%;height:auto;border-right:0;border-bottom:1px solid var(--border);padding:14px}.brand{margin-bottom:10px}aside>.eyebrow{display:none}nav{display:flex;overflow-x:auto}nav button{white-space:nowrap;font-size:12px;padding:10px}.sidebar-footer{margin-top:10px;display:flex;align-items:center;justify-content:space-between}.sidebar-footer button{padding:6px;font-size:11px}main{padding:20px 14px}.chat-top{flex-wrap:wrap}#messages{max-height:48vh}.composer-footer small{max-width:170px}.login-card{padding:28px}.message{max-width:100%}}