:root{color-scheme:light;--bg: #eef1ed;--panel: #fbfcfb;--panel-strong: #ffffff;--text: #1c2420;--muted: #667069;--line: #d9dfd8;--accent: #147a56;--accent-strong: #0b5b43;--blue: #2a67b1;--code-bg: #101412;--code-text: #e6f4ee;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans SC,sans-serif}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:var(--bg);color:var(--text);font-size:16px;line-height:1.5}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:minmax(250px,320px) minmax(0,1fr);min-height:100vh}.side-panel{border-right:1px solid var(--line);background:var(--panel);padding:24px}.brand{display:flex;gap:12px;align-items:center;margin-bottom:34px}.brand-mark{display:grid;width:42px;height:42px;place-items:center;border-radius:8px;background:var(--text);color:#fff;font-weight:800}.brand-kicker,.eyebrow{margin:0;color:var(--accent);font-size:.78rem;font-weight:700;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:1.2rem;line-height:1.2}h2{margin-bottom:0;font-size:1.25rem;line-height:1.25}.settings-group,.prompt-policy{display:grid;gap:10px;margin-bottom:28px}.settings-group label{color:var(--muted);font-size:.85rem;font-weight:700}.settings-group select,.settings-group input{width:100%;min-height:42px;border:1px solid var(--line);border-radius:8px;background:var(--panel-strong);color:var(--text);padding:0 12px}.settings-group input:disabled{opacity:.55}.custom-standard-label{margin-top:8px}.prompt-policy{border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:.92rem}.prompt-policy h2{color:var(--text);font-size:1rem}.chat-panel{display:grid;grid-template-rows:auto minmax(0,1fr) auto;min-width:0;min-height:100vh;background:var(--panel-strong)}.chat-header{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding:18px 24px}.ghost-button{min-height:38px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--text);padding:0 14px}.messages{overflow:auto;padding:28px 24px}.message{display:grid;grid-template-columns:86px minmax(0,820px);gap:18px;max-width:1060px;margin:0 auto 28px}.message-meta{color:var(--muted);font-size:.83rem;font-weight:800}.message-body{min-width:0}.message-body p{margin-bottom:12px}.message.user .message-body{border-left:3px solid var(--blue);padding-left:14px}.message.assistant .message-body{border-left:3px solid var(--accent);padding-left:14px}.message-body code{border-radius:4px;background:#e6ece8;padding:.1rem .25rem;color:#17211c;font-family:SFMono-Regular,Consolas,Liberation Mono,monospace;font-size:.92em}.code-shell{overflow:hidden;border:1px solid #202a25;border-radius:8px;background:var(--code-bg);margin:16px 0}.code-toolbar{display:flex;min-height:38px;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #26332d;color:#a7bbb1;padding:0 12px;font-size:.83rem}.copy-code{min-height:28px;border:1px solid #3d5148;border-radius:6px;background:#18211d;color:var(--code-text);padding:0 10px}pre{overflow:auto;margin:0;padding:16px}pre code,.message-body pre code{display:block;background:transparent;color:var(--code-text);padding:0;white-space:pre}.composer{border-top:1px solid var(--line);background:var(--panel);padding:16px 24px 20px}textarea{display:block;width:min(100%,1060px);min-height:118px;max-height:320px;margin:0 auto;resize:vertical;border:1px solid var(--line);border-radius:8px;background:var(--panel-strong);color:var(--text);padding:14px 16px}textarea:focus,select:focus,input:focus,button:focus-visible{outline:3px solid rgba(20,122,86,.22);outline-offset:2px}.composer-actions{display:flex;width:min(100%,1060px);align-items:center;justify-content:space-between;gap:16px;margin:12px auto 0}.status{min-height:24px;color:var(--muted);font-size:.9rem}#send-button{min-width:92px;min-height:42px;border:0;border-radius:8px;background:var(--accent);color:#fff;font-weight:800;padding:0 20px}#send-button:hover{background:var(--accent-strong)}#send-button:disabled{cursor:wait;opacity:.65}@media(max-width:860px){.app-shell{grid-template-columns:1fr}.side-panel{border-right:0;border-bottom:1px solid var(--line)}.settings-group{grid-template-columns:1fr 1fr;align-items:end}.settings-group label,.settings-group .custom-standard-label{margin:0}.prompt-policy{display:none}.message{grid-template-columns:1fr;gap:6px}}@media(max-width:560px){.side-panel,.chat-header,.messages,.composer{padding-left:16px;padding-right:16px}.settings-group{grid-template-columns:1fr}.chat-header,.composer-actions{align-items:stretch;flex-direction:column}#send-button{width:100%}}