:root{--bg: #fafafa;--fg: #1a1a1a;--muted: #6b6b6b;--border: #e2e2e2;--user: #7c3aed;--user-fg: #fff;--assistant: #fff;--accent: #7c3aed}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--fg)}#root{display:flex;flex-direction:column}header{padding:.75rem 1rem;border-bottom:1px solid var(--border);background:#fff;display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}header .spacer{flex:1}header select{font-size:.8rem;padding:.3rem .5rem;border:1px solid var(--border);border-radius:6px;background:#fff;max-width:210px}.account-picker{display:flex;align-items:center}.account-name{font-size:.8rem;padding:.3rem .5rem;border:1px solid var(--border);border-radius:6px;background:#f4f4f4;max-width:210px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-note{font-size:.78rem;color:var(--muted)}header a.signin{font-size:.8rem;color:var(--accent);text-decoration:none}header a.signin:hover{text-decoration:underline}.hello{font-size:.95rem;font-weight:600;color:var(--accent)}.user-menu{position:relative;display:inline-flex}.user-menu-button{background:transparent;border:0;padding:.25rem;cursor:pointer;color:var(--muted);display:inline-flex;align-items:center;border-radius:999px}.user-menu-button:hover{color:var(--accent);background:#f4f4f4}.user-menu-popover{position:absolute;top:calc(100% + .4rem);right:0;min-width:12rem;background:#fff;border:1px solid var(--border);border-radius:8px;box-shadow:0 6px 24px #00000014;padding:.35rem 0;z-index:10}.user-menu-item{display:block;width:100%;text-align:left;background:transparent;border:0;padding:.55rem .9rem;font-size:.9rem;color:var(--fg);cursor:pointer}.user-menu-item:hover{background:#f4f4f4}.thread{flex:1;overflow-y:auto;padding:1rem}.wrap{max-width:720px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:.75rem}.msg{padding:.6rem .85rem;border-radius:12px;word-wrap:break-word;overflow-wrap:anywhere;line-height:1.5;max-width:85%}.msg.user{background:var(--user);color:var(--user-fg);align-self:flex-end;border-bottom-right-radius:3px;white-space:pre-wrap}.msg.assistant{background:var(--assistant);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:3px}.msg.assistant.pending{color:var(--muted)}.empty{color:var(--muted);text-align:center;margin-top:3rem}.tool-status{align-self:flex-start;font-size:.78rem;color:var(--muted);font-style:italic;padding:0 .3rem}.msg.assistant>:first-child{margin-top:0}.msg.assistant>:last-child{margin-bottom:0}.msg.assistant p{margin:.5rem 0}.msg.assistant ul,.msg.assistant ol{margin:.5rem 0;padding-left:1.4rem}.msg.assistant li{margin:.15rem 0}.msg.assistant code{background:#f0f0f0;padding:.1rem .3rem;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em}.msg.assistant pre{background:#f0f0f0;padding:.6rem .75rem;border-radius:8px;overflow-x:auto;margin:.5rem 0}.msg.assistant pre code{background:none;padding:0}.msg.assistant table{border-collapse:collapse;margin:.5rem 0;font-size:.9em}.msg.assistant th,.msg.assistant td{border:1px solid var(--border);padding:.3rem .5rem;text-align:left}.msg.assistant th{background:#f4f4f4}.msg.assistant h1,.msg.assistant h2,.msg.assistant h3{margin:.6rem 0 .3rem;font-size:1rem}.msg.assistant a{color:var(--accent)}.msg.assistant blockquote{margin:.5rem 0;padding-left:.75rem;border-left:3px solid var(--border);color:var(--muted)}.chart-block{width:100%;max-width:560px;margin:.5rem 0}.chart-canvas{position:relative;height:280px}.chart-pending{font-size:.8rem;color:var(--muted);font-style:italic;padding:.5rem 0}.chart-error{font-size:.8rem;color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:.5rem .65rem}.chart-error pre{margin:.4rem 0 0;background:#fff;font-size:.75rem}footer{border-top:1px solid var(--border);background:#fff;padding:.75rem 1rem}.composer{max-width:720px;margin:0 auto;display:flex;gap:.5rem}textarea{flex:1;resize:none;font-family:inherit;font-size:.95rem;padding:.55rem .7rem;border:1px solid var(--border);border-radius:8px;min-height:2.6rem;max-height:8rem}button{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:0 1.1rem;font-size:.9rem;cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}