:root{--bg: #16161a;--bg-raised: #1d1d22;--bg-inset: #121215;--border: #2c2c33;--text: #e6e6ea;--text-dim: #9a9aa5;--accent: #c8825a;--accent-dim: #7a4f36;--danger: #e06a5c;--mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;color-scheme:dark}@media(prefers-color-scheme:light){:root{--bg: #faf9f7;--bg-raised: #ffffff;--bg-inset: #f0efec;--border: #dedbd5;--text: #22221f;--text-dim: #6b6b64;--accent: #b5653a;--accent-dim: #d9b49c;--danger: #c0392b;color-scheme:light}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:15px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}.app{display:grid;grid-template-columns:260px 1fr;height:100%}.sidebar{display:flex;flex-direction:column;min-height:0;background:var(--bg-inset);border-right:1px solid var(--border)}.sidebar__head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:14px 14px 10px}.sidebar__brand{font-family:var(--mono);font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--accent)}.sidebar__new{padding:5px 12px;border:1px solid var(--border);border-radius:6px;background:var(--bg-raised);color:var(--text);font-size:13px;cursor:pointer}.sidebar__new:hover{border-color:var(--accent-dim)}.sidebar__list{flex:1;min-height:0;overflow-y:auto;padding:4px 8px 12px}.sidebar__empty{padding:8px 6px;color:var(--text-dim);font-size:13px}.sidebar__item{display:flex;align-items:center;border-radius:7px}.sidebar__item:hover{background:var(--bg-raised)}.sidebar__item--active{background:var(--bg-raised);box-shadow:inset 2px 0 0 var(--accent)}.sidebar__select{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px;padding:8px 10px;border:0;background:none;color:inherit;text-align:left;cursor:pointer}.sidebar__title{overflow:hidden;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.sidebar__time{color:var(--text-dim);font-size:11px}.sidebar__delete{padding:0 10px;border:0;background:none;color:var(--text-dim);font-size:18px;line-height:1;cursor:pointer;opacity:0}.sidebar__item:hover .sidebar__delete{opacity:1}.sidebar__delete:hover{color:var(--danger)}.main{display:flex;flex-direction:column;min-height:0}.banner{padding:6px 16px;background:var(--accent-dim);color:#fff;font-size:13px;text-align:center}.transcript{flex:1;min-height:0;overflow-y:auto;padding:28px 24px 8px}.transcript>*{max-width:780px;margin-inline:auto}.placeholder{padding-top:18vh;color:var(--text-dim);text-align:center}.placeholder h1{margin:0 0 6px;color:var(--accent);font-family:var(--mono);font-size:26px}.turn{margin-bottom:22px}.turn--user{display:flex;justify-content:flex-end}.turn__bubble{max-width:85%;padding:9px 14px;border-radius:14px 14px 3px;background:var(--accent-dim);color:#fff;white-space:pre-wrap}.turn__markdown>:first-child{margin-top:0}.turn__markdown>:last-child{margin-bottom:0}.turn__markdown pre{overflow-x:auto;padding:12px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg-inset);font-family:var(--mono);font-size:13px}.turn__markdown code{font-family:var(--mono);font-size:.9em}.turn__markdown :not(pre)>code{padding:1px 5px;border-radius:4px;background:var(--bg-inset)}.turn__markdown table{display:block;overflow-x:auto;border-collapse:collapse}.turn__markdown th,.turn__markdown td{padding:5px 10px;border:1px solid var(--border)}.turn__thinking,.reasoning__toggle{color:var(--text-dim);font-size:13px}.turn__error{margin-top:8px;padding:9px 12px;border-left:2px solid var(--danger);border-radius:4px;background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);font-size:13px}.reasoning{margin-bottom:8px}.reasoning__toggle{padding:0;border:0;background:none;cursor:pointer;text-decoration:underline dotted}.reasoning__body{margin:6px 0 0;padding:10px 12px;overflow-x:auto;border-left:2px solid var(--border);color:var(--text-dim);font-family:var(--mono);font-size:12px;white-space:pre-wrap}.tool{margin:8px 0;border:1px solid var(--border);border-radius:8px;background:var(--bg-raised);overflow:hidden}.tool--pending{border-color:var(--accent-dim)}.tool__header{display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;border:0;background:none;color:inherit;font-size:13px;text-align:left;cursor:pointer}.tool__chevron{color:var(--text-dim);font-size:11px}.tool__name{color:var(--accent);font-family:var(--mono);font-weight:600}.tool__summary{flex:1;min-width:0;overflow:hidden;color:var(--text-dim);font-family:var(--mono);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.tool__spinner{width:11px;height:11px;flex-shrink:0;border:2px solid var(--accent-dim);border-top-color:transparent;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.tool__spinner{animation:none}}.tool__body{padding:0 12px 12px;border-top:1px solid var(--border)}.tool__label{margin:10px 0 4px;color:var(--text-dim);font-size:11px;letter-spacing:.05em;text-transform:uppercase}.tool__pre{max-height:380px;margin:0;overflow:auto;padding:10px 12px;border-radius:6px;background:var(--bg-inset);font-family:var(--mono);font-size:12px;white-space:pre-wrap;word-break:break-word}.composer{display:flex;gap:10px;align-items:flex-end;max-width:780px;width:100%;margin:0 auto;padding:12px 24px 20px}.composer__input{flex:1;max-height:240px;padding:11px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg-raised);color:var(--text);font:inherit;resize:none}.composer__input:focus{border-color:var(--accent);outline:none}.composer__button{padding:11px 20px;border:0;border-radius:10px;background:var(--accent);color:#fff;font:inherit;font-weight:500;cursor:pointer}.composer__button:disabled{opacity:.4;cursor:default}.composer__button--stop{background:var(--danger)}@media(max-width:720px){.app{grid-template-columns:1fr;grid-template-rows:auto 1fr}.sidebar{border-right:0;border-bottom:1px solid var(--border);max-height:34vh}.transcript,.composer{padding-inline:14px}}