:root{--bg:#f3f5f3;--panel:#fff;--ink:#192b27;--muted:#6d7d75;--line:#dce4de;--accent:#19694f;--light:#eaf3ed;--danger:#973b33;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button,.button{padding:9px 13px;background:#fff;border:1px solid var(--line);border-radius:7px;color:var(--ink);cursor:pointer;text-decoration:none;white-space:nowrap}button:hover,.button:hover{border-color:var(--accent);background:#f5faf6}button:disabled{opacity:.5;cursor:wait}button.primary{background:var(--accent);color:white;border-color:var(--accent);font-weight:600}button.quiet{margin-left:auto;color:var(--danger)}h1,h2,h3,p{margin:0}h2{font-size:14px;font-weight:650}h3{font-size:17px}p{margin:8px 0}header{display:flex;justify-content:space-between;align-items:center;padding:23px 34px 19px;border-bottom:1px solid var(--line);background:#fff}.identity{display:flex;align-items:center;gap:15px}.seed-mark{font-size:45px;line-height:1;color:var(--accent)}h1{font-size:25px;font-weight:700;letter-spacing:.1em}h1 small{font-size:10px;font-weight:550;letter-spacing:.12em;color:var(--muted);vertical-align:middle;margin-left:10px}.identity p{color:var(--muted);font-size:12px;margin:0}.header-actions{display:flex;gap:9px;align-items:center}.badge{padding:5px 9px;border-radius:5px;background:var(--light);font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--accent)}main{max-width:1600px;margin:0 auto;padding:24px 34px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.section-title{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:13px}.section-title>span{font-size:11px;color:var(--muted)}textarea,input,select{width:100%;border:1px solid var(--line);border-radius:6px;padding:9px 10px;background:#fff;color:var(--ink);outline:none}textarea:focus,input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 2px #19694f0d}textarea{resize:vertical}#input{font-size:15px;min-height:92px;background:#fbfcfb}.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:12px}.switch{display:flex;gap:6px;align-items:center;margin-left:6px;font-size:12px;color:var(--muted)}.switch input{width:auto;accent-color:var(--accent)}.metrics{display:grid;grid-template-columns:repeat(5,1fr);margin:19px 0;border:1px solid var(--line);border-radius:9px;background:#edf1ed}.metrics>div{padding:13px 18px;border-right:1px solid var(--line)}.metrics>div:last-child{border:0}.metrics strong{font:550 24px/1.2 var(--mono);display:block}.metrics span{font-size:11px;color:var(--muted)}.workspace{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(300px,1fr);gap:18px;align-items:start}aside{display:flex;flex-direction:column;gap:15px}.trace-panel{min-height:570px}.trace-controls{display:flex;gap:8px}.trace-controls select{font-size:12px}.trace-note{font-size:11px;color:var(--muted);padding:2px 1px 10px}.empty{text-align:center;padding:80px 12px;color:var(--muted)}.empty-mark{font-size:58px;color:#88a395}.empty p{font-size:13px}.empty-small{font-size:12px;color:var(--muted);padding:5px 0}.event{border-top:1px solid var(--line);padding:10px 0}.event summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:10px;align-items:baseline}.event summary::-webkit-details-marker{display:none}.event .number{font:11px var(--mono);color:var(--muted)}.event .event-type{font:600 11px var(--mono);color:var(--accent)}.event .event-time{font:10px var(--mono);color:var(--muted)}.event .preview{margin:5px 0 0 58px;font-size:12px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere}.event.error .event-type{color:var(--danger)}.event[open] .preview{display:none}pre{font:11px/1.6 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;background:#f5f7f4;border:1px solid var(--line);border-radius:6px;padding:12px;max-height:600px;overflow:auto;margin:9px 0 0}.result{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}.muted{color:var(--muted);font-size:12px}details{margin:12px 0 3px}details>summary{cursor:pointer;color:var(--muted);font-size:12px}.form-card,.tool-card{border:1px solid var(--line);border-radius:7px;padding:10px;margin:9px 0}.form-card summary{color:var(--ink);font-size:13px}.form-meta{font:10px var(--mono);color:var(--muted);margin-bottom:4px}.tool-card strong{font:11px var(--mono)}.tool-card p{font-size:11px;color:var(--muted);margin:3px 0}.birth{background:transparent;font-size:11px;color:var(--muted)}.birth button{font-size:11px}footer{font-size:11px;color:var(--muted);padding:10px 34px 25px}.hidden{display:none!important}#settings{margin:18px 34px 0}.settings-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.settings-grid label{font-size:11px;color:var(--muted)}.settings-grid input,.settings-grid textarea,.settings-grid select{display:block;margin-top:4px}.wide{grid-column:span 2}.inline{display:flex;gap:4px}.inline button{margin-top:4px}#extra_body,#provider{font-family:var(--mono);font-size:12px}#config-result{font-size:12px;color:var(--accent)}#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);max-width:80vw;background:var(--ink);color:white;padding:12px 20px;border-radius:7px;box-shadow:0 4px 25px #0002;z-index:5;white-space:pre-wrap}#toast.error{background:var(--danger)}
@media(min-width:1500px){header,#settings{max-width:1532px;margin-left:auto;margin-right:auto}header{border:0}}
@media(max-width:900px){header{padding:18px}.header-actions{flex-wrap:wrap;justify-content:flex-end}main{padding:18px}.workspace{grid-template-columns:1fr}.metrics{grid-template-columns:repeat(5,1fr)}.metrics>div{padding:10px}.metrics span{font-size:10px}.settings-grid{grid-template-columns:repeat(2,1fr)}#settings{margin:16px 18px 0}}
@media(max-width:560px){header{gap:12px;align-items:flex-start}.header-actions{max-width:140px}.header-actions .badge{width:100%;text-align:right}h1{font-size:20px}.identity{gap:7px}.identity p{max-width:160px}.metrics{grid-template-columns:repeat(3,1fr)}.metrics>div{border-bottom:1px solid var(--line)}.toolbar .switch{width:100%;order:4;margin-left:0}.section-title>span{display:none}.trace-controls{flex-wrap:wrap}.settings-grid{display:block}.settings-grid label{display:block;margin:10px 0}.event summary{grid-template-columns:30px minmax(0,1fr) auto;gap:6px}.event .preview{margin-left:36px}.panel{padding:14px}.trace-panel{min-height:430px}footer{padding:15px 18px}}
 .metric-tokens{display:block;font-size:9px!important;line-height:1.05;color:var(--muted);white-space:nowrap;letter-spacing:-.01em}
 .copy-visible{padding:4px 8px;font-size:10px;color:var(--muted)}
/* Conversation-first shell: one scroll region, composer outside the feed. */
:root{--bg:#f5f3ed;--ink:#243831;--line:#dddcd3;--accent:#235c48;--muted:#68746c}
html,body{height:100%;overflow:hidden}body{height:100dvh;display:flex;flex-direction:column;font-family:'Segoe UI',sans-serif}header{flex:none;padding:12px 24px;min-height:70px;max-width:none;width:100%;margin:0}.identity p,h1 small,.header-actions>a,footer{display:none}.seed-mark{font-size:32px}h1{font:600 25px Georgia,serif;letter-spacing:.14em}.header-actions{max-width:none;flex-wrap:nowrap}.badge{max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#settings-toggle{display:none}#navigation{display:flex;gap:4px;padding:6px 24px;background:#fff;border-bottom:1px solid var(--line);flex:none}#navigation button{border:0;background:transparent;color:var(--muted);min-height:44px}#navigation button[aria-current=page]{background:var(--light);color:var(--accent);font-weight:650}main{display:flex;flex-direction:column;width:100%;max-width:1000px;min-height:0;flex:1;padding:0 24px;margin:0 auto;overflow:hidden}#conversation{position:relative;flex:1;min-height:0;display:flex;flex-direction:column}#chat-scroll{overflow-y:auto;overscroll-behavior:contain;flex:1;padding:20px 8px;scrollbar-gutter:stable}#older-messages{display:block;margin:0 auto 24px;font-size:13px}#messages{display:flex;flex-direction:column;gap:24px}.message{min-width:0;max-width:92%;padding:18px 22px;background:#fff;border:1px solid var(--line);border-radius:4px 18px 18px 18px}.message.owner{align-self:flex-end;background:#e7eee6;border-color:#d6e0d4;border-radius:18px 4px 18px 18px}.message-meta{display:flex;gap:12px;align-items:center;color:var(--muted);font-size:12px;margin-bottom:10px}.message-meta strong{color:var(--accent)}.message-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;line-height:1.7}.message-copy{margin-left:auto;border:0;background:transparent;min-height:44px;font-size:12px;padding:4px 8px}#new-messages{position:absolute;bottom:12px;align-self:center;box-shadow:0 3px 16px #0002}#chat-empty{text-align:center;color:var(--muted);margin:30px}.stimulus.panel{flex:none;border:0;border-top:1px solid var(--line);border-radius:0;background:var(--bg);padding:12px 0 max(12px,env(safe-area-inset-bottom))}.compose-row{display:flex;align-items:flex-end;gap:10px}#input{min-height:62px;max-height:160px;resize:none;font-size:16px;line-height:1.5;border-radius:12px;padding:12px;background:#fff}#run{min-height:62px;border-radius:12px}.stimulus .section-title{margin:0}.stimulus .toolbar{margin-top:6px;gap:8px}.stimulus .toolbar button{min-height:36px;font-size:12px}.switch{margin:0;font-size:12px}.switch input,input[type=checkbox]{width:auto}.workspace,.metrics{display:none}body[data-screen=trace] .workspace,body[data-screen=forms] .workspace{display:block;overflow:auto;min-height:0;padding:16px 0}body[data-screen=trace] .workspace aside,body[data-screen=forms] .trace-panel{display:none}body:not([data-screen=chat]) #conversation,body:not([data-screen=chat]) .stimulus{display:none}body[data-screen=forms] aside>section:first-child{display:none}body[data-screen=settings] main{display:none}body[data-screen=settings] #settings{display:block!important;overflow:auto;margin:0 auto;padding:24px;max-width:1000px;width:100%;min-height:0;border:0;border-radius:0}.settings-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.wide{grid-column:span 2}.trace-panel{min-height:0}.trace-controls{flex-wrap:wrap}.trace-controls select{min-width:0;max-width:100%}pre{white-space:pre;max-width:100%;overflow:auto}.panel,aside,.workspace{min-width:0}button,.button,select{min-height:44px}button:focus-visible,a:focus-visible{outline:3px solid #83ac94;outline-offset:2px}.auth-panel{width:min(440px,calc(100% - 32px));margin:24px auto;overflow:auto}.auth-panel label{display:block;margin:12px 0}.auth-panel input{font-size:16px}.locked main,.locked #navigation,.locked #settings,.locked .header-actions{display:none!important}#toast{bottom:160px;max-width:calc(100vw - 32px);font-size:13px}
@media(max-width:600px){header{padding:8px 14px;min-height:56px}.identity{gap:8px}.badge{font-size:10px;max-width:170px}.header-actions .badge{width:auto;text-align:left}#navigation{padding:3px 8px;justify-content:space-between;gap:0}#navigation button{padding:8px 12px;font-size:13px}main{padding:0 12px}#chat-scroll{padding:16px 0}.message{max-width:98%;padding:12px 14px}.message-text{font-size:16px;line-height:1.6}.message-meta{gap:8px;font-size:11px}.message-copy{font-size:11px;padding:4px}#messages{gap:16px}.compose-row{gap:7px}#run{padding:8px 12px;font-size:13px}#input{min-height:60px;max-height:120px}.stimulus .toolbar{justify-content:space-between;flex-wrap:nowrap}.stimulus .toolbar #explore{display:none}.toolbar .switch{width:auto;order:0}.stimulus .toolbar .quiet{margin-left:auto}.section-title{flex-wrap:wrap}.settings-grid{display:block}.settings-grid label{display:block;margin-bottom:14px}body[data-screen=settings] #settings{padding:16px}.event summary{grid-template-columns:35px minmax(0,1fr) auto}.event .preview{margin-left:0}.copy-visible{font-size:12px}.auth-panel{margin:16px auto}}