:root{--shft-paper:#f4efe6;--shft-ink:#1c1914;--shft-mute:#6b6458;--shft-line:#ddd4c4;--shft-shift:#9a4d1c;--shft-sidebar:#ebe4d6;--shft-font-display:"Fraunces",serif;--shft-font-ui:"Source Serif 4","Iowan Old Style",Georgia,serif;--shft-font-sans:"IBM Plex Sans",ui-sans-serif,system-ui,sans-serif;--shft-font-mono:"IBM Plex Mono",ui-monospace,monospace;--shft-field:#fffdf8}.shft-shell{min-height:100vh;display:grid;grid-template-columns:248px minmax(0,1fr);background:var(--shft-paper);color:var(--shft-ink);font-family:var(--shft-font-sans)}.shft-sidebar{background:var(--shft-sidebar);border-right:1px solid var(--shft-line);padding:20px 16px;display:flex;flex-direction:column;gap:16px}.shft-sidebar-heading{color:var(--shft-mute);font-size:11px;letter-spacing:.08em;margin:4px 6px 2px;text-transform:uppercase}.shft-mobile-header,.shft-sidebar-scrim{display:none}.shft-topbar{padding-top:20px;color:var(--shft-mute);font-size:12px}.shft-mark{font-family:var(--shft-font-display);font-size:22px;font-weight:500;letter-spacing:.18em}.shft-main{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh}.shft-thread{overflow:auto;padding:48px 0 24px}.shft-col{max-width:720px;margin:0 auto;padding:0 24px}.shft-msg{padding:18px 0;border-bottom:1px solid transparent}.shft-msg-user{color:var(--shft-mute);font-size:15px;display:block;width:100%;text-align:left;background:transparent;border:0;padding:18px 0;font:inherit;cursor:pointer}.shft-msg-assistant{font-family:var(--shft-font-ui);font-size:18px;line-height:1.55}.shft-composer{border-top:1px solid var(--shft-line);padding:16px 0 28px}.shft-composer form{max-width:720px;margin:0 auto;padding:0 24px;display:grid;grid-gap:8px;gap:8px}.shft-composer textarea{width:100%;min-height:72px;resize:none;border:1px solid var(--shft-line);background:var(--shft-field);padding:12px 14px;font:inherit;color:inherit;border-radius:2px}.shft-composer textarea:focus{outline:2px solid var(--shft-shift);outline-offset:1px}.shft-row{display:flex;gap:8px;align-items:center;justify-content:space-between;color:var(--shft-mute);font-size:12px}.shft-composer-tools{justify-content:flex-start;flex-wrap:wrap;gap:10px}.shft-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--shft-line);background:var(--shft-field);color:inherit;font:inherit;font-size:12px;padding:6px 8px;border-radius:2px;max-width:100%}.shft-icon-btn:disabled,.shft-select:disabled{opacity:.55;cursor:not-allowed}.shft-icon-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--shft-line);background:transparent;color:var(--shft-mute);width:32px;height:32px;padding:0;display:grid;place-items:center;cursor:pointer}.shft-chip{display:inline-block;margin:4px 6px 0 0;padding:2px 8px;border:1px solid var(--shft-line);font-family:var(--shft-font-sans);letter-spacing:.02em}.shft-chip,.shft-usage{color:var(--shft-mute);font-size:11px}.shft-usage{line-height:1.4}.shft-msg-user:focus-visible{outline:2px solid var(--shft-shift);outline-offset:2px}.shft-thinking{color:var(--shft-mute);font-family:var(--shft-font-sans);font-size:14px}.shft-error{align-items:center;border:1px solid var(--shft-shift);color:var(--shft-shift);display:flex;font-size:13px;gap:12px;justify-content:space-between;margin:20px 0 0;padding:10px 12px}.shft-error .shft-btn{color:inherit;flex:0 0 auto}.shft-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:var(--shft-ink);color:var(--shft-paper);padding:8px 14px;font:inherit;cursor:pointer}.shft-btn-quiet{background:transparent;color:var(--shft-ink);border:1px solid var(--shft-line)}.shft-list{list-style:none;margin:0;padding:0;display:grid;grid-gap:4px;gap:4px}.shft-list button{width:100%;text-align:left;background:transparent;border:0;padding:8px 6px;font:inherit;color:inherit;cursor:pointer}.shft-list button[data-active=true]{box-shadow:inset 2px 0 0 var(--shft-shift);background:rgba(154,77,28,.06)}@media (prefers-color-scheme:dark){:root{--shft-paper:#161410;--shft-ink:#f3ece3;--shft-mute:#b3aa9c;--shft-line:#3a342c;--shft-sidebar:#1d1914;--shft-field:#1d1914}}@media (max-width:800px){.shft-shell{display:block;position:relative}.shft-sidebar{bottom:0;box-shadow:12px 0 30px rgba(28,25,20,.12);left:0;max-width:320px;position:fixed;top:0;transform:translateX(-105%);transition:transform .18s ease;visibility:hidden;width:min(86vw,320px);z-index:20}.shft-sidebar[data-open=true]{transform:translateX(0);visibility:visible}.shft-sidebar-scrim{background:rgba(28,25,20,.28);border:0;bottom:0;display:block;left:0;padding:0;position:fixed;right:0;top:0;z-index:10}.shft-mobile-header{align-items:center;border-bottom:1px solid var(--shft-line);display:flex;gap:10px;min-height:56px;padding:8px 16px}.shft-mobile-title{flex:1 1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.shft-mobile-header .shft-btn{font-size:12px;padding:7px 9px}.shft-topbar{display:none}.shft-thread{padding-top:28px}.shft-composer{padding-bottom:max(20px,env(safe-area-inset-bottom))}}@media (prefers-reduced-motion:reduce){.shft-sidebar{transition:none}}body,html{margin:0;min-height:100%}body{background:var(--shft-paper)}.customer-session-gate{display:grid;min-height:100vh;place-items:center;padding:2rem}.customer-session-panel{display:grid;grid-gap:.75rem;gap:.75rem;max-width:26rem;text-align:center}.customer-email-otp{display:grid;grid-gap:.5rem;gap:.5rem;text-align:left}.customer-email-otp input{box-sizing:border-box;font:inherit;min-height:2.75rem;width:100%}.customer-email-otp-hint{margin:0;text-align:center}.customer-session-divider{opacity:.65}.customer-session-logout,.customer-session-panel button{cursor:pointer}.customer-session-authenticated{min-height:100vh}.customer-session-logout{position:fixed;right:1rem;top:1rem}