:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;color-scheme:dark;--bg:#101318;--surface:#181c23;--elevated:#20252f;--border:#343b48;--text:#edf1f8;--muted:#aeb8c8;--accent:#83b4ff;--solid:#2563eb;--on-solid:#fff;--tint:#223550;--shadow:0 24px 80px #0006;font-size:15px;line-height:1.5;color:var(--text);background:var(--bg)}
:root[data-theme=dark][data-accent=blue]{--bg:#0d1422;--surface:#111c2d;--elevated:#19263b;--border:#2c3c53}
:root[data-accent=purple]{--accent:#c2a1ff;--solid:#7040c8;--tint:#30263f}
:root[data-accent=green]{--accent:#69dfb6;--solid:#127452;--tint:#183b31}
:root[data-accent=orange]{--accent:#ffbe80;--solid:#a9470a;--tint:#3d2c22}
:root[data-accent=pink]{--accent:#f8a3cd;--solid:#b0276b;--tint:#3e2433}
:root[data-theme=light]{color-scheme:light;--bg:#f9fafc;--surface:#fff;--elevated:#f0f3f8;--border:#d5dce6;--text:#172033;--muted:#526078;--accent:#215bc2;--tint:#e8f0ff;--shadow:0 24px 80px #22334426}
:root[data-theme=light][data-accent=purple]{--accent:#713dbb;--tint:#f0e9fc}
:root[data-theme=light][data-accent=green]{--accent:#126849;--tint:#e5f5ee}
:root[data-theme=light][data-accent=orange]{--accent:#9a430e;--tint:#fff0e4}
:root[data-theme=light][data-accent=pink]{--accent:#a62764;--tint:#fce8f2}
*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button,.button{border:1px solid transparent;background:var(--solid);color:var(--on-solid);padding:11px 18px;border-radius:10px;cursor:pointer;font-weight:600;min-height:44px}button:hover{filter:brightness(1.09)}button:disabled{opacity:.6;cursor:wait}.ghost,.secondary{background:transparent;color:var(--muted);border-color:var(--border)}.ghost{border-color:transparent}.ghost:hover,.secondary:hover{background:var(--elevated);color:var(--text)}a{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-size:1.4rem;font-weight:750;text-decoration:none;letter-spacing:-.05em}.brand-mark{color:var(--accent);font-size:1.8rem}.muted{color:var(--muted)}.small{font-size:.8rem}.eyebrow{font-size:.7rem;letter-spacing:.13em;color:var(--muted);font-weight:650}.demo-badge{font-size:.68rem;letter-spacing:.06em;border:1px solid var(--border);padding:5px 9px;border-radius:6px;color:var(--muted);white-space:nowrap}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:30px}h1{font-size:clamp(2rem,3.5vw,3.5rem);font-weight:650;letter-spacing:-.045em;line-height:1.15}h2{font-size:1.35rem;letter-spacing:-.025em}h3{font-size:1rem}label{display:block}input:not([type=radio]),select,textarea{width:100%;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:9px;padding:11px 12px}select{cursor:pointer}textarea{resize:vertical;max-height:240px;min-height:95px}#notice{position:relative;z-index:30;display:flex;align-items:center;justify-content:center;min-height:42px;width:100%;padding:4px 16px;color:var(--text);text-align:center;overflow-wrap:anywhere;font-size:.85rem}#notice:not(:empty){background:var(--elevated);border-bottom:1px solid var(--border);box-shadow:0 4px 18px #0002}#notice[data-state=error]:not(:empty){color:#ffb4ab}:root[data-theme=light] #notice[data-state=error]:not(:empty){color:#9c1c13}
.auth-header{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:auto;padding:25px}.auth-grid{max-width:1100px;margin:7vh auto;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;padding:24px}.intro p{font-size:1.1rem;color:var(--muted);max-width:360px;margin-bottom:28px}.auth-card label{margin:15px 0 5px}.auth-card input{margin-top:7px}.auth-actions{display:flex;gap:10px;margin-top:22px}.auth-actions button{flex:1}.auth-footer{text-align:center;font-size:.8rem;color:var(--muted);padding:20px}details{margin-top:20px}summary{cursor:pointer;font-size:.85rem}#workspace{display:grid;grid-template-columns:266px minmax(0,1fr);height:calc(100dvh - 42px)}.sidebar{overflow-y:auto;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:22px 16px;min-height:0}.sidebar-brand{display:flex;align-items:center;justify-content:space-between;padding:0 10px 25px}.new-chat{width:100%;text-align:left;background:var(--tint);color:var(--accent);border:1px solid var(--border);margin-bottom:15px}.nav-item{background:transparent;text-align:left;color:var(--muted);width:100%;padding:11px 12px;font-weight:500}.nav-item:hover{background:var(--elevated);color:var(--text)}.history-heading{margin:24px 12px 10px}#chats{overflow-y:auto;min-height:45px;flex:1}.history{display:block;background:transparent;color:var(--muted);font-size:.8rem;text-align:left;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;width:100%;padding:9px 12px;font-weight:400}.history:hover,.history[aria-current=true]{background:var(--elevated);color:var(--text)}.sidebar-bottom{padding-top:12px}.balance-card{padding:15px;border:1px solid var(--border);border-radius:12px;margin:12px 0;background:var(--bg)}.balance-label{font-size:.8rem;color:var(--muted)}.balance-label span{float:right;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em}.balance-card strong{display:block;font-size:1.4rem;margin:7px 0}.balance-card p{margin:7px 0}progress{width:100%;height:5px;accent-color:var(--accent);display:block;margin:12px 0}.profile{border-top:1px solid var(--border);padding-top:18px;display:flex;align-items:center;gap:10px;font-size:.85rem}.avatar{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--tint);color:var(--accent);font-weight:700}.profile>div{flex:1}.profile strong,.profile #plan{display:block}.profile #plan{font-size:.75rem;color:var(--muted)}.profile button{padding:8px}.mobile-only{display:none}#chat-panel{display:flex;flex-direction:column;min-width:0;min-height:0}.chat-topbar{display:flex;gap:18px;align-items:center;border-bottom:1px solid var(--border);padding:16px 28px;min-height:80px}.model-label{display:flex;gap:10px;align-items:center;font-size:.75rem;color:var(--muted)}#model{background:transparent;border:0;font-size:.9rem;font-weight:600;width:auto;max-width:235px;padding:8px}.chat-topbar>.demo-badge{margin-left:auto}.top-appearance{font-size:.85rem}.chat-body{flex:1;overflow-y:auto;padding:30px;min-height:0;display:flex;flex-direction:column}#welcome{width:100%;max-width:760px;margin:auto;text-align:center;padding:25px 0}.welcome-mark{font-size:3.5rem;color:var(--accent);margin-bottom:15px}#welcome h1{font-size:clamp(1.8rem,3vw,2.8rem);margin:18px 0 12px}#welcome>p{margin:0 0 38px}.suggestions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.suggestions button{display:flex;flex-direction:column;text-align:left;align-items:flex-start;gap:8px;color:var(--text);background:var(--surface);border:1px solid var(--border);padding:18px 15px;border-radius:14px;font-weight:400;min-height:150px}.suggestions button:hover{border-color:var(--accent);background:var(--elevated)}.suggestion-icon{color:var(--accent);font-size:1.5rem}.suggestions strong{font-size:.85rem}.suggestions button>span:last-child{font-size:.75rem;color:var(--muted)}#messages{width:100%;max-width:820px;margin:0 auto}.message{padding:20px 0;overflow-wrap:anywhere}.message strong{font-size:.8rem;color:var(--accent)}.message p{white-space:pre-wrap;margin:9px 0;font-size:.95rem;line-height:1.7}.message.user{margin-left:15%;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px 20px}.message.user strong{color:var(--muted)}.composer-area{padding:12px 30px 18px;width:100%;max-width:880px;margin:0 auto}#send-form{border:1px solid var(--border);border-radius:18px;background:var(--surface);padding:15px}#prompt{background:transparent;border:0;padding:8px 5px;min-height:70px;max-height:180px;resize:vertical}#prompt::placeholder{color:var(--muted)}.compose-footer{display:flex;align-items:center;justify-content:space-between;gap:10px}.style-label{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:.75rem}#mode{background:var(--elevated);width:auto;font-size:.8rem;border:0;padding:9px}#send{white-space:nowrap;flex-shrink:0;font-size:.85rem}.composer-note{text-align:center;color:var(--muted);font-size:.7rem;line-height:1.7;margin:12px 0 0}dialog{width:min(500px,calc(100% - 32px));max-height:calc(100dvh - 40px);overflow:auto;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:26px;box-shadow:var(--shadow)}dialog::backdrop{background:#0008;backdrop-filter:blur(3px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.dialog-heading h2{margin:0}.close-dialog{padding:8px 14px}fieldset{border:0;padding:0;margin:25px 0}legend{font-size:.85rem;font-weight:600;margin-bottom:12px}.choices,.swatches{display:flex;gap:8px;flex-wrap:wrap}.choices label{padding:10px;background:var(--elevated);border:1px solid var(--border);border-radius:9px;flex:1;white-space:nowrap;font-size:.85rem;cursor:pointer}.choices label:has(input:checked){border-color:var(--accent);color:var(--accent)}input[type=radio]{accent-color:var(--solid)}.swatches label{display:flex;flex-direction:column;align-items:center;flex:1;cursor:pointer;font-size:.75rem;gap:7px}.swatches input{appearance:none;width:30px;height:30px;border-radius:50%;background:var(--swatch);border:3px solid var(--surface);outline:1px solid var(--border);margin:2px;cursor:pointer}.swatches input:checked{outline:3px solid var(--accent)}[data-color=blue]{--swatch:#3978ed}[data-color=purple]{--swatch:#9b71e4}[data-color=green]{--swatch:#26b98c}[data-color=orange]{--swatch:#ed9247}[data-color=pink]{--swatch:#df72a8}#appearance-error{color:var(--accent);font-size:.85rem}#save-appearance{width:100%}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:1000px){.suggestions{grid-template-columns:repeat(2,minmax(0,1fr))}.suggestions button{min-height:125px}.chat-topbar{padding:14px 18px;gap:10px}.top-appearance span{display:none}.chat-body{padding:22px}.auth-grid{gap:30px}.composer-area{padding:12px 20px}}
@media(max-width:700px){.auth-grid{grid-template-columns:1fr;margin:15px auto;gap:28px}.intro h1{font-size:2.5rem}.auth-card{padding:22px}.auth-header{padding:20px}.intro{padding:0 4px}.mobile-only{display:block}#workspace{grid-template-columns:1fr}.sidebar{display:none;position:fixed;inset:0 auto 0 0;width:min(300px,86vw);z-index:40;box-shadow:var(--shadow)}.nav-open .sidebar{display:flex}#nav-backdrop{position:fixed;inset:0;background:#0008;border:0;border-radius:0;z-index:35}.chat-topbar{padding:10px;gap:5px;min-height:65px}.model-label{font-size:0;gap:0;min-width:0;flex:1}#model{font-size:.8rem;width:100%;max-width:175px;padding:7px 2px}.chat-topbar>.demo-badge{font-size:.55rem;padding:4px}.top-appearance{padding:8px;font-size:1.1rem}.chat-body{padding:16px}#welcome{padding:12px 0}.welcome-mark{font-size:2.6rem;margin-bottom:8px}#welcome .eyebrow{font-size:.6rem}#welcome h1{font-size:1.9rem}#welcome>p{font-size:.85rem;margin-bottom:24px}.suggestions{gap:9px}.suggestions button{min-height:120px;padding:12px}.suggestions strong{font-size:.8rem}.suggestions button>span:last-child{font-size:.7rem}.composer-area{padding:8px 12px 10px}#send-form{padding:10px;border-radius:15px}.composer-note{font-size:.6rem}.style-label{font-size:.65rem;gap:4px}#mode{font-size:.75rem;padding:9px 5px}#send{padding:9px 12px}.message.user{margin-left:8%}dialog{padding:20px}.choices label{font-size:.8rem;padding:8px}.auth-footer{font-size:.7rem}}


@media(max-width:700px){#prompt,.auth-card input{font-size:16px}}