:root{--logoi-serif: "EB Garamond", "Garamond", Georgia, serif;--logoi-mono: "IBM Plex Mono", "Cascadia Code", "Fira Mono", ui-monospace, monospace;--logoi-display: "Cinzel", Georgia, serif;--chat-col: 46rem}.chat-app{height:100dvh;display:flex;flex-direction:column;background:var(--color-canvas)}.chat-topbar{flex:none;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.55rem clamp(.9rem,3vw,1.6rem);border-bottom:1px solid var(--color-line-strong);background:var(--color-canvas)}.chat-topbar .brand{font-family:var(--logoi-display);font-weight:500;font-size:.88rem;letter-spacing:.3em;color:var(--color-ink);text-decoration:none;text-transform:uppercase;gap:.5rem}.chat-topbar .brand-mark{display:inline-grid;place-items:center;width:1.4rem;height:1.4rem;border:1px solid var(--color-accent-warm);border-radius:2px;color:var(--color-accent-warm);background:transparent;font-size:.9rem;font-family:var(--logoi-display);font-weight:500;letter-spacing:0}.chat-topbar-nav{display:flex;gap:1.25rem}.chat-topbar-nav a{font-family:var(--logoi-mono);font-size:.72rem;color:var(--color-muted);text-decoration:none;letter-spacing:.02em}.chat-topbar-nav a:hover{color:var(--color-accent)}.chat-root{flex:1;min-height:0;display:flex;flex-direction:column}.chat-scroll{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column}.chat-root.is-empty .chat-scroll{justify-content:center}.chat-hero{width:min(var(--chat-col),92%);margin:0 auto;padding:1rem 0 2rem;text-align:center}.chat-hero-title{font-family:var(--logoi-display);font-weight:500;font-size:clamp(1.75rem,4vw,2.6rem);letter-spacing:.08em;margin:0 0 .75rem;color:var(--color-ink);text-transform:uppercase}.chat-hero-sub{font-family:var(--logoi-serif);font-size:1.05rem;line-height:1.65;color:var(--color-muted);max-width:48ch;margin:0 auto 1.5rem}.chat-suggestions{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem}.chat-suggestions button{font-family:var(--logoi-mono);font-size:.72rem;letter-spacing:.01em;padding:.38rem .75rem;background:var(--color-panel);border:1px solid #b5af9e;border-radius:2px;color:var(--color-muted);cursor:pointer;transition:border-color .12s ease,color .12s ease;text-transform:lowercase}.chat-suggestions button:hover:not(:disabled){border-color:var(--color-accent-warm);color:var(--color-accent-warm)}.chat-thread{width:min(var(--chat-col),94%);margin:0 auto;padding:1.4rem 0 1rem;display:flex;flex-direction:column;gap:1.6rem}.chat-user{display:flex;justify-content:flex-end}.chat-user p{margin:0;max-width:85%;padding:0;color:var(--color-muted);font-size:.96rem;line-height:1.45;font-style:italic;text-align:right}.chat-assistant{display:flex;flex-direction:column;gap:.55rem}.chat-answer{font-family:var(--logoi-serif);font-size:17px;line-height:1.65;color:var(--color-ink);max-width:64ch}.chat-answer p{margin:0 0 .8rem}.chat-answer p:last-child{margin-bottom:0}.chat-answer blockquote,.chat-answer .passage-block{margin:.8rem 0;padding:.7rem 1rem;border:.5px solid var(--color-ink);border-radius:0;background:var(--color-panel)}.chat-caret{display:inline-block;width:1px;height:1.05em;background:var(--color-ink);vertical-align:text-bottom;margin-left:2px;animation:chat-caret-blink 1.1s steps(2,start) infinite}@keyframes chat-caret-blink{to{visibility:hidden}}@media(prefers-reduced-motion:reduce){.chat-caret{animation:none}}.chat-error{margin:0;font-size:.88rem;color:var(--state-disputed)}.chat-tools{display:flex;flex-direction:column;gap:.25rem}.tool-drop{border:.5px solid var(--color-line);border-radius:2px;background:var(--color-panel);font-size:.82rem}.tool-drop summary{list-style:none;display:flex;align-items:center;gap:.5rem;padding:.35rem .6rem;cursor:pointer;user-select:none;color:var(--color-accent);font-family:var(--logoi-mono);font-size:11.5px;letter-spacing:.01em}.tool-drop summary::-webkit-details-marker{display:none}.tool-chevron{width:.35rem;height:.35rem;border-right:1px solid var(--color-accent);border-bottom:1px solid var(--color-accent);transform:rotate(-45deg);transition:transform .14s ease;flex:none}.tool-drop[open] .tool-chevron{transform:rotate(45deg)}.tool-name{background:transparent;border:none;border-radius:0;padding:0;font-size:inherit;font-family:inherit;color:inherit;font-weight:400}.tool-summary{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;flex:1;color:var(--color-muted);font-size:10.5px}.tool-state{flex:none;width:.4rem;height:.4rem;border-radius:50%;background:var(--color-faint)}.tool-state.is-settled{background:var(--color-accent)}.tool-detail{padding:.4rem .6rem .5rem;border-top:.5px solid var(--color-line);display:flex;flex-direction:column;gap:.4rem}.tool-input{color:var(--color-muted);font-family:var(--logoi-mono);font-size:10.5px;overflow-wrap:anywhere}.tool-sources{display:flex;flex-wrap:wrap;gap:.3rem}.source-chip{font-family:var(--logoi-mono);font-size:10.5px;border:.5px solid var(--color-accent);border-radius:2px;padding:.05rem .4rem;color:var(--color-accent);background:var(--color-canvas)}.receipt-link{font-family:var(--logoi-mono);font-size:11px;letter-spacing:.05em;color:var(--color-accent);align-self:flex-start;text-decoration:none}.receipt-link:hover{text-decoration:underline}.chat-dock{flex:none;width:min(var(--chat-col),94%);margin:0 auto;padding:.4rem 0 max(.7rem,env(safe-area-inset-bottom))}.chat-quota-wall{margin:0 0 .5rem;padding:.6rem .85rem;background:var(--color-amber-bg);border:.5px solid color-mix(in srgb,var(--state-pending) 40%,var(--color-line));border-radius:2px;font-size:.86rem;color:var(--color-ink)}.chat-composer{display:flex;align-items:flex-end;gap:.5rem;border:1px solid var(--color-line-strong);border-radius:2px;background:var(--color-panel-strong);padding:.55rem .55rem .55rem .9rem;transition:border-color .12s ease}.chat-composer:focus-within{border-color:var(--color-accent);outline:2px solid color-mix(in srgb,var(--color-accent) 18%,transparent);outline-offset:1px}.chat-composer textarea{flex:1;font-family:var(--logoi-serif);font-size:1rem;line-height:1.5;border:none;background:transparent;color:var(--color-ink);resize:none;max-height:9rem;outline:none}.chat-composer textarea::placeholder{color:var(--color-faint)}.chat-composer button{flex:none;font-family:var(--logoi-display);font-size:.8rem;font-weight:500;letter-spacing:.15em;text-transform:uppercase;padding:.5rem 1.1rem;border-radius:2px;border:1px solid var(--color-accent);background:var(--color-accent);color:#fff;cursor:pointer;transition:background .12s ease}.chat-composer button:hover:not(:disabled){background:color-mix(in srgb,var(--color-accent) 85%,#000)}.chat-composer button:disabled,.chat-composer textarea:disabled,.chat-suggestions button:disabled{opacity:.45;cursor:not-allowed}.chat-microline{margin:.45rem 0 0;text-align:center;font-family:var(--logoi-mono);font-size:.68rem;color:var(--color-faint);letter-spacing:.01em}.chat-quota-meter{color:var(--color-accent)}.chat-footnote{flex:none;text-align:center;font-family:var(--logoi-mono);font-size:.68rem;color:var(--color-faint);padding:0 0 .5rem;letter-spacing:.01em}.chat-footnote a{color:var(--color-muted)}.chat-footnote a:hover{color:var(--color-accent)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}