:root{--bg:#f7f7f2;--panel:#eeefe9;--ink:#20352f;--muted:#718078;--line:#dce1d8;--accent:#254e40;--gold:#d8edb0}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0;border-radius:8px;padding:10px 15px;color:var(--ink);background:transparent}button:hover{filter:brightness(.95);background-color:#dce4d6}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid #648e72;outline-offset:2px}.primary{background:var(--accent);color:white;font-weight:600}.primary:hover{background:#183e30}.secondary{background:var(--gold);font-weight:600}.subtle{border:1px solid var(--line);font-size:13px}.icon{font-size:22px;padding:2px 8px}.brand{display:flex;align-items:center;gap:12px;font-size:21px;letter-spacing:-.6px}.brand small{display:block;font-size:9px;letter-spacing:2px;font-weight:650;margin-top:4px;color:var(--muted)}.mark{font-family:Georgia,serif;font-style:italic;font-size:38px;font-weight:bold;background:var(--accent);color:var(--gold);height:48px;width:44px;display:flex;align-items:center;justify-content:center;border-radius:12px}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:1.5px;font-weight:700;color:var(--muted)}.welcome{min-height:100vh;padding:34px 5vw;background:radial-gradient(ellipse at 90% 15%,#e4eddb,transparent 48%)}.login-card{margin:9vh auto 40px;max-width:410px}.login-card h1{font:48px/1.1 Georgia,serif;letter-spacing:-1.5px;margin:20px 0}.login-card p{line-height:1.7}.login-card form{margin-top:30px;display:grid;gap:18px}.login-card button{padding:13px}label{display:grid;gap:7px;font-size:13px;font-weight:550}input,select,textarea{border:1px solid var(--line);padding:11px 12px;border-radius:8px;color:var(--ink);background:#fff}input,select{min-width:0;width:100%}.footnote{font-size:11px;color:var(--muted);line-height:1.6}.login-card .footnote{margin-top:25px}#app{display:grid;grid-template-columns:265px 1fr;height:100vh;overflow:hidden}#app[hidden], [hidden]{display:none!important}aside{padding:26px 18px 18px;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:32px;overflow:auto}.sidebar-section{display:grid;gap:10px}.sidebar-section>label{font-size:10px;letter-spacing:1.2px;color:var(--muted)}.row{display:flex;align-items:center;justify-content:space-between;gap:10px}#threadList{display:grid;gap:5px;max-height:55vh;overflow:auto}.thread-link{display:flex;flex-direction:column;text-align:left;gap:5px;width:100%;padding:12px}.thread-link.selected{background:#dde5d5}.thread-link small{font-size:10px;color:var(--muted)}.account{margin-top:auto;display:flex;align-items:center;gap:10px;padding-top:20px;border-top:1px solid var(--line)}.account small{display:block;font-size:10px;color:var(--muted);max-width:130px;overflow:hidden;text-overflow:ellipsis}.avatar{width:30px;height:30px;flex-shrink:0;border-radius:9px;background:#dce8d0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px}.account button{margin-left:auto}main{display:flex;flex-direction:column;min-width:0;height:100vh}header{padding:25px 35px 19px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}header h1{font-size:21px;margin:5px 0 6px;font-weight:600;letter-spacing:-.6px}header #participants{font-size:11px}header select{width:auto;font-size:12px;padding:9px}#history{flex:1;overflow-y:auto;padding:20px max(30px,calc((100% - 800px)/2));scroll-behavior:smooth}.empty{display:flex;min-height:100%;justify-content:center;flex-direction:column;align-items:center;text-align:center;color:var(--muted)}.empty h2{font:29px Georgia,serif;color:var(--ink);margin:20px 0 4px}.empty p{line-height:1.8}.empty-mark{font:italic 60px Georgia,serif;color:#87a47d}.message-card{margin:20px 0 30px;padding:0 4px}.message-top{display:flex;align-items:center;gap:9px;margin-bottom:11px}.message-top strong{font-size:13px}.message-top time{font-size:10px;color:var(--muted)}.message-top .badge{font-size:9px;background:var(--panel);padding:3px 6px;border-radius:4px;color:var(--muted)}.message-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.75;font-size:14px;margin-left:39px}.message-card.assistant{background:#f0f2eb;padding:18px;border-radius:13px}.message-card.assistant .avatar{background:#dee6da;font:italic bold 18px Georgia,serif}.message-card.assistant .message-body{margin-left:0}.attachment{display:inline-flex;gap:8px;font-size:12px;color:var(--accent);background:#fff;border:1px solid var(--line);border-radius:8px;padding:9px 12px;margin:10px 4px 0 0;text-decoration:none}.attachment.unavailable{color:var(--muted)}.error-note{font-size:12px;color:#895139;margin-top:10px}.composer-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 13px}.attach-button{font-size:12px;cursor:pointer;font-weight:500}#composer{padding:10px 32px 13px;max-width:890px;width:100%;align-self:center}#messageForm{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 3px 10px #18372906}textarea{resize:vertical;max-height:220px;min-height:72px;width:100%;border:0;border-radius:0;padding:17px}#composer .footnote{text-align:center;margin:8px 0 0}#uploads{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}#notice{padding:12px 28px;background:#faf0db;color:#755f36;font-size:13px}.provider-notice{font-size:12px;color:#755f36;margin-bottom:10px}dialog{border:1px solid var(--line);border-radius:15px;background:var(--bg);color:var(--ink);padding:30px;width:min(540px,90vw);box-shadow:0 20px 90px #12271830}dialog::backdrop{background:#1a322850;backdrop-filter:blur(2px)}dialog p,dialog li{line-height:1.7;font-size:13px}dialog h2{font:27px Georgia,serif;margin-top:0}.dialog-buttons{display:flex;justify-content:flex-end;gap:10px;margin-top:25px}#importSelection{display:grid;gap:15px;margin:20px 0}#loginError,#importError{color:#9a483f}@media(max-width:800px){#app{grid-template-columns:205px 1fr}aside{padding:20px 12px}header{padding:16px;align-items:flex-start;flex-direction:column;gap:12px}header h1{font-size:18px}#history{padding:15px}#composer{padding:10px}header #threadActions{width:100%}.composer-bottom{flex-wrap:wrap}.brand{font-size:18px}}@media(max-width:550px){#app{grid-template-columns:150px 1fr}aside{padding:15px 8px}.brand{gap:6px;font-size:14px}.mark{width:28px;height:34px;font-size:28px}.brand small{font-size:7px;letter-spacing:1px}#ready{display:none}.message-body{margin-left:0}.account .avatar{display:none}button{padding:9px}#myName{font-size:12px}}

#model{width:auto;max-width:145px;padding:6px;font-size:13px}#usageDetails{font-size:12px;color:var(--muted,#65736d);margin-top:10px}#usageDetails summary{cursor:pointer}#usageBody p{margin:8px 0;line-height:1.5}#contextNote:empty{display:none}