:root{
  --font-sans:'Geist',ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'Geist Mono',ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
  --radius:16px;
  --bg:#f8f7f4;--bg-subtle:#eeece6;--surface:#ffffff;--surface-2:#f4f2ed;
  --text:#1c1917;--muted:#6f6961;--faint:#9c958b;--border:#dedbd2;
  --primary:#27231f;--primary-fg:#fffaf0;--accent:#645bff;--accent-soft:#eeedff;
  --success:#18794e;--warning:#9a6700;--danger:#b42318;
  --shadow:0 1px 1px rgba(28,25,23,.04),0 16px 50px rgba(28,25,23,.08);
  color-scheme:light;
}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b0b0a;--bg-subtle:#131311;--surface:#181715;--surface-2:#201f1c;--text:#f4f1ea;--muted:#aaa39a;--faint:#746f67;--border:#333029;--primary:#f4f1ea;--primary-fg:#171512;--accent:#9b8cff;--accent-soft:#242034;--shadow:0 1px 1px rgba(0,0,0,.22),0 18px 60px rgba(0,0,0,.34);color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0b0b0a;--bg-subtle:#131311;--surface:#181715;--surface-2:#201f1c;--text:#f4f1ea;--muted:#aaa39a;--faint:#746f67;--border:#333029;--primary:#f4f1ea;--primary-fg:#171512;--accent:#9b8cff;--accent-soft:#242034;--shadow:0 1px 1px rgba(0,0,0,.22),0 18px 60px rgba(0,0,0,.34);color-scheme:dark}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.hidden{display:none!important}button,input,textarea{font:inherit}.surface{background:color-mix(in srgb,var(--surface) 94%,transparent);border:1px solid var(--border);box-shadow:var(--shadow)}
.login-screen{min-height:100dvh;display:grid;place-items:center;padding:20px;background:radial-gradient(600px 300px at 50% -10%,var(--accent-soft),transparent 70%),var(--bg)}.login-card{width:min(520px,100%);border-radius:28px;padding:24px}.brand-row{display:flex;align-items:center;gap:12px}.brand-row h1{font-size:22px;margin:0;letter-spacing:-.04em}.brand-row p{margin:2px 0 0;color:var(--muted);font-size:13px}.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:var(--primary);color:var(--primary-fg);font:700 20px var(--font-mono)}.brand-row.compact .brand-mark{width:36px;height:36px}.brand-row.compact h1{font-size:18px}.login-copy{margin:44px 0 22px}.eyebrow{font:600 12px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin:0 0 12px}.login-copy h2{font-size:clamp(34px,9vw,54px);line-height:.96;letter-spacing:-.07em;margin:0 0 14px}.login-copy p:not(.eyebrow){color:var(--muted);line-height:1.6;font-size:16px}.login-row{display:flex;gap:10px}.field,.login-row input{height:46px;border-radius:14px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);outline:none}.login-row input{min-width:0;flex:1;padding:0 14px}.login-row input:focus,.search-field:focus-within,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.btn,.icon-btn{border:0;cursor:pointer;min-height:44px;border-radius:14px;transition:background .15s,border-color .15s,transform .08s}.btn:active,.icon-btn:active{transform:translateY(1px)}.btn{padding:0 16px;font-weight:600}.btn-primary{background:var(--primary);color:var(--primary-fg)}.btn-ghost,.icon-btn{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}.full{width:100%}.icon-btn{width:44px;display:grid;place-items:center;font-weight:700}.app{height:100dvh;display:grid;grid-template-columns:300px minmax(0,1fr);padding:10px;gap:10px;background:var(--bg)}.sidebar{border-radius:24px;padding:14px;display:flex;flex-direction:column;min-height:0}.side-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.search-field{display:flex;align-items:center;gap:8px;margin:12px 0;padding:0 12px;box-shadow:none}.search-field input{border:0;background:transparent;color:var(--text);outline:none;min-width:0;width:100%}.mode-panel{display:grid;gap:8px;margin-bottom:16px}.mode-option{text-align:left;border:1px solid var(--border);background:var(--surface-2);border-radius:14px;padding:12px;min-height:64px;color:var(--text)}.mode-option span{display:block;font-weight:650}.mode-option small{display:block;color:var(--muted);margin-top:4px}.mode-option.active{border-color:var(--accent);background:var(--accent-soft)}.section-label{font:600 11px var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin:4px 4px 8px}.chat-list{overflow:auto;display:grid;gap:6px;padding-right:2px}.chat-item{border:0;background:transparent;color:var(--muted);text-align:left;border-radius:12px;padding:11px 12px;line-height:1.25;min-height:42px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-item:hover{background:var(--surface-2);color:var(--text)}.chat-item.active{background:var(--primary);color:var(--primary-fg)}.side-footer{margin-top:auto;padding-top:12px}.status{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:12px}.dot{width:8px;height:8px;border-radius:50%;background:var(--faint)}.dot.ok{background:var(--success)}
.main-shell{min-width:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:10px}.topbar{height:64px;border-radius:22px;display:flex;align-items:center;gap:12px;padding:0 12px 0 16px}.title-stack{min-width:0;flex:1}.title-stack h2{margin:0;font-size:17px;letter-spacing:-.03em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.title-stack p{margin:3px 0 0;color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.top-actions{display:flex;gap:8px;align-items:center}.scroll-area{overflow:auto;padding:4px 0 8px;display:flex;flex-direction:column;gap:12px}.empty-state{border-radius:24px;padding:26px;margin:0 auto;width:min(780px,100%);box-shadow:none}.empty-state h3{font-size:clamp(30px,8vw,56px);letter-spacing:-.07em;line-height:.95;margin:0 0 12px}.empty-state p:not(.eyebrow){max-width:620px;color:var(--muted);line-height:1.6}.prompt-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.prompt-chips button{border:1px solid var(--border);background:var(--surface-2);color:var(--text);border-radius:999px;padding:9px 12px;cursor:pointer}.messages{width:min(860px,100%);margin:0 auto;display:grid;gap:10px}.bubble{padding:15px 16px;border-radius:18px;line-height:1.58;border:1px solid var(--border);background:var(--surface);overflow-wrap:anywhere}.bubble.user{margin-left:auto;max-width:min(720px,92%);background:var(--primary);color:var(--primary-fg);border-color:transparent}.bubble.assistant{max-width:100%}.bubble h1,.bubble h2,.bubble h3{letter-spacing:-.04em;line-height:1.1;margin:14px 0 8px}.bubble p{margin:0 0 10px}.bubble ul,.bubble ol{padding-left:22px}.bubble code{font-family:var(--font-mono);font-size:.92em;background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:1px 4px}.bubble pre{overflow:auto;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:12px}.sources,.timeline,.model-grid{width:min(1120px,100%);margin:0 auto}.sources{border:1px solid var(--border);background:var(--surface);border-radius:18px;padding:14px}.sources h4{margin:0 0 10px}.source-row{padding:10px 0;border-top:1px solid var(--border)}.source-row:first-of-type{border-top:0}.source-row a{color:var(--text);font-weight:600}.source-row small{color:var(--muted);line-height:1.45}.timeline{display:flex;gap:8px;overflow:auto;padding-bottom:2px}.timeline-step{flex:0 0 auto;border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:8px 11px;color:var(--muted);font-size:12px}.timeline-step.active{background:var(--accent-soft);color:var(--text);border-color:var(--accent)}.model-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px}.model-card{border:1px solid var(--border);background:var(--surface);border-radius:20px;padding:14px;min-height:168px;box-shadow:var(--shadow);position:relative;overflow:hidden}.model-card:before{content:'';position:absolute;inset:0 0 auto;height:3px;background:var(--card-accent,var(--accent))}.model-card h4{margin:0 0 10px;font-size:14px}.model-card .meta{color:var(--muted);font-size:12px;margin-bottom:10px}.model-card .body{color:var(--muted);font-size:13px;line-height:1.52;max-height:260px;overflow:auto}.model-card.loading .body:after{content:'';display:block;width:100%;height:7px;border-radius:999px;margin-top:14px;background:linear-gradient(90deg,var(--surface-2),var(--accent-soft),var(--surface-2));background-size:200% 100%;animation:shimmer 1.2s infinite}@keyframes shimmer{to{background-position:-200% 0}}.error{color:var(--danger)}.composer{border-radius:24px;padding:10px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px}.composer textarea{border:1px solid transparent;background:transparent;color:var(--text);resize:none;outline:none;min-height:48px;max-height:168px;padding:13px 8px;line-height:1.45}.composer-actions{display:flex;align-items:end;gap:8px}.recording{border-color:var(--danger)!important;color:var(--danger)!important}.mobile-only{display:none}.scrim{display:none}
@media(max-width:760px){.app{display:block;padding:0}.sidebar{position:fixed;z-index:30;inset:8px auto 8px 8px;width:min(330px,calc(100vw - 16px));transform:translateX(calc(-100% - 12px));transition:transform .2s ease}.sidebar.open{transform:translateX(0)}.scrim.show{display:block;position:fixed;z-index:20;inset:0;background:rgba(0,0,0,.38);backdrop-filter:blur(2px)}.main-shell{height:100dvh;padding:8px;grid-template-rows:auto minmax(0,1fr) auto}.mobile-only{display:grid}.topbar{height:58px;border-radius:18px}.top-actions .btn-ghost{display:none}.scroll-area{padding-bottom:2px}.empty-state{padding:22px 18px;border-radius:20px}.composer{border-radius:20px;grid-template-columns:1fr}.composer-actions{justify-content:space-between}.composer textarea{min-height:44px}.messages,.sources,.timeline,.model-grid{width:100%}.bubble.user{max-width:94%}}