:root{color-scheme:light dark;--bg:#fafafa;--surface:#fff;--text:#202124;--muted:#62666d;--line:#dedfe3;--accent:#315cce;--accent-text:#fff;--user:#edf1fa;--error:#b22d36;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px}
@media(prefers-color-scheme:dark){:root{--bg:#111315;--surface:#191c20;--text:#e9eaed;--muted:#a0a5ae;--line:#333840;--accent:#91b0ff;--accent-text:#101a30;--user:#202936;--error:#ff9a9f}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:8px;padding:9px 13px;background:var(--surface);color:var(--text);font-size:.875rem}button:hover{border-color:var(--muted)}button:disabled{cursor:default;opacity:.5}button:focus-visible,input:focus-visible,textarea:focus-visible,main:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}.app{height:100vh;height:100dvh;max-width:1060px;margin:auto;display:flex;flex-direction:column;padding:0 32px}header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}h1{margin:0;font-size:1.125rem;font-weight:650;letter-spacing:-.025em}.header-controls{display:flex;gap:8px;align-items:center}.mode-switch{display:flex;padding:3px;background:var(--surface);border:1px solid var(--line);border-radius:9px;margin-right:10px}.mode-switch button{border:0;background:transparent;font-size:.75rem;letter-spacing:.04em;padding:7px 10px}.mode-switch button[aria-pressed=true]{background:var(--text);color:var(--bg)}main{flex:1;min-height:0;overflow:auto;padding:28px 0;scrollbar-width:thin}#empty-state{height:100%;min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px}.empty-mark{color:var(--accent);font-size:3rem;line-height:1;margin-bottom:16px}h2{font-size:1.375rem;letter-spacing:-.035em;font-weight:600;margin:0 0 10px}#empty-state p{color:var(--muted);font-size:.9375rem;line-height:1.6;margin:0 0 20px}.message{max-width:780px;margin:0 auto 28px}.message-label{font-size:.8125rem;color:var(--muted);margin-bottom:8px;font-weight:600}.message-content{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}.message.user .message-content{padding:14px 18px;background:var(--user);border-radius:10px}.message.assistant .message-content{padding:0 2px}.message-error{font-size:.875rem;color:var(--error);white-space:pre-wrap;overflow-wrap:anywhere;margin:10px 0 0}.message.assistant[data-pending=true] .message-content:empty::after{content:'Thinking…';color:var(--muted)}footer{padding:0 0 max(20px,env(safe-area-inset-bottom));width:100%;max-width:780px;margin:0 auto}.conversation-tools{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;color:var(--muted);font-size:.8125rem}.text-button{border:0;background:transparent;color:var(--muted);padding:5px 0;font-size:.8125rem}#composer{display:flex;align-items:flex-end;gap:12px;border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--surface)}textarea,input{color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:10px 12px;width:100%;font-size:1rem}textarea{resize:vertical;line-height:1.5}#prompt{border:0;resize:none;padding:3px 5px;max-height:180px;min-height:54px}#prompt:focus{outline:none}.send-controls{display:flex;gap:6px}.primary{background:var(--accent);color:var(--accent-text);border-color:var(--accent);font-weight:600}.footer-note{display:flex;justify-content:space-between;gap:10px;margin:10px 2px 0;color:var(--muted);font-size:.75rem}#status[data-error=true]{color:var(--error)}dialog{width:min(480px,calc(100% - 32px));max-height:calc(100dvh - 40px);padding:26px;background:var(--surface);color:var(--text);border:1px solid var(--line);border-radius:14px;overflow:auto}dialog::backdrop{background:#0008}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.dialog-heading h2{margin:0}.dialog-heading button{border:0;padding:6px 10px}#settings-form>label:not(.checkbox){display:block;margin:16px 0 7px;font-size:.875rem;font-weight:550}.checkbox{display:flex;gap:9px;align-items:center;font-size:.875rem;margin-top:12px}.checkbox input{width:16px;height:16px;accent-color:var(--accent)}.muted{color:var(--muted);font-weight:400}.settings-note{font-size:.8125rem;color:var(--muted);line-height:1.6;margin:18px 0 10px}#test-result{font-size:.875rem;line-height:1.5;overflow-wrap:anywhere}#test-result[data-error=true]{color:var(--error)}.dialog-actions{display:flex;justify-content:space-between;margin-top:18px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:600px){.app{padding:0 16px}header{align-items:flex-start;flex-direction:column;gap:14px;padding:18px 0}.header-controls{width:100%;justify-content:space-between}.mode-switch{margin-right:auto}main{padding:22px 0}footer{padding-bottom:max(14px,env(safe-area-inset-bottom))}.footer-note{font-size:.75rem}.footer-note>span:last-child{display:none}#composer{gap:6px;padding:10px}.send-controls{flex-direction:column}dialog{padding:22px}.message{margin-bottom:24px}}