:root{color-scheme:light;--bg:#fff;--side:#f7f7f8;--ink:#262629;--muted:#737379;--line:#e9e9eb;--soft:#f9e8e8;--red:#b32632;--box:#f7f7f8;--focus:#b32632;--app-height:100dvh}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{background:var(--bg);color:var(--ink);font:14px/1.5 'Segoe UI',Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}body.dark{color-scheme:dark;--bg:#19191c;--side:#202023;--ink:#eeeeef;--muted:#b0b0b7;--line:#343439;--soft:#392429;--red:#ef9ba3;--box:#232326;--focus:#ef9ba3}button,input,textarea,select{font:inherit}button{border:0;background:transparent;color:inherit;border-radius:12px;padding:10px 14px;cursor:pointer;min-height:44px}button:hover{background:var(--box)}button:disabled{opacity:.45;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--focus);outline-offset:3px}[hidden]{display:none!important}.primary{background:#b32632;color:#fff}.primary:hover{background:#98202b}.icon-button{width:44px;min-width:44px;height:44px;padding:0;display:inline-grid;place-items:center;font-size:22px}.mobile{display:none}.muted,.small,.composer-caption{color:var(--muted)}.small{font-size:12px}.full{width:100%}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:500;letter-spacing:-.6px}.brand-mark{display:grid;place-items:center;color:var(--red);font-size:32px;font-weight:500;width:30px;line-height:1}.side-brand{display:flex;justify-content:space-between;align-items:center;min-height:44px;padding:0 10px}#app{display:grid;grid-template-columns:244px minmax(0,1fr);height:var(--app-height);overflow:hidden}#sidebar{display:flex;flex-direction:column;gap:18px;min-height:0;background:var(--side);padding:20px 14px 12px}.new-conversation{display:flex;align-items:center;gap:12px;background:var(--soft);color:var(--red);text-align:left;border-radius:16px;padding:12px 18px;margin:5px 0 6px;font-weight:500}.new-conversation:hover{background:var(--soft);filter:brightness(.98)}.new-conversation>span{font-size:23px}.section-label{display:flex;align-items:center;justify-content:space-between;padding-left:12px;color:var(--muted);font-size:12px}.section-label .icon-button{font-size:20px}#library{flex:1;min-height:0;overflow-y:auto;scrollbar-width:thin}.book{margin-bottom:17px}.book-title{display:flex;align-items:center;gap:10px;width:100%;text-align:left;font-weight:500;padding:9px 12px}.book-title span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-title .book-symbol{font-size:18px;color:var(--muted);flex:none}.chat{display:block;text-align:left;width:calc(100% - 20px);margin:3px 0 3px 20px;font-size:13px;padding:9px 12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-height:40px}.chat.active{color:var(--red);background:var(--soft)}.empty-library{padding:0 12px;color:var(--muted);font-size:13px}footer{border-top:1px solid var(--line);padding-top:10px}.nav-control{width:100%;display:flex;align-items:center;gap:11px;text-align:left;font-size:13px}.nav-control>span{font-size:21px}.nav-control.active{color:var(--red);background:var(--soft)}.bottom{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted);gap:3px;margin-top:5px}.bottom>span{flex:1;padding-left:12px}.bottom>button:not(.icon-button){font-size:12px;padding:8px}.bottom .icon-button{font-size:21px}
#main{min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden}.topbar{height:86px;flex:none;display:flex;align-items:center;gap:14px;padding:16px 36px;border-bottom:1px solid var(--line)}.heading{min-width:0;flex:1}.heading p{margin:0 0 4px;color:var(--muted);font-size:12px}.heading h1{margin:0;font-size:18px;font-weight:500;letter-spacing:-.35px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.personal{font-size:11px;color:var(--muted);border:1px solid var(--line);padding:4px 10px;border-radius:20px}#writing{flex:1;min-height:0;display:flex;flex-direction:column}#reading{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scroll-behavior:auto}#messages{max-width:780px;margin:auto;padding:38px 32px 20px;overflow-wrap:anywhere}.message{margin-bottom:38px}.message.user{background:var(--box);border-radius:20px 20px 4px 20px;padding:16px 20px;max-width:88%;margin-left:auto;font-size:14px;line-height:1.65;white-space:pre-wrap}.message.model{padding:0 4px;font-size:16px;line-height:1.85}.message-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;font:12px/1.5 'Segoe UI',Arial,sans-serif;color:var(--muted)}.speaker{display:flex;gap:8px;align-items:center;color:var(--red);font-weight:500}.speaker-dot{font-size:16px}.copy{min-height:36px;padding:6px 10px;font-size:12px;color:var(--muted)}.prose p{margin:0 0 18px}.prose p:last-child{margin-bottom:0}.prose ul,.prose ol{padding-left:22px;margin:0 0 18px}.prose h2,.prose h3{font-size:18px;font-weight:500;margin:22px 0 12px}.prose code{font-size:.9em;background:var(--box);padding:2px 4px;border-radius:4px}.prose pre{white-space:pre-wrap;background:var(--box);border-radius:12px;padding:16px;font-size:13px}.prose blockquote{margin:16px 0;padding-left:18px;border-left:2px solid var(--line);color:var(--muted)}.empty{text-align:center;color:var(--muted);padding:clamp(30px,12vh,100px) 0 20px}.empty .empty-mark{font-size:34px;color:var(--red);margin:0 0 14px}.empty h2{color:var(--ink);font-size:23px;font-weight:400;letter-spacing:-.7px;margin:0 0 10px}.empty p{font-size:14px;margin:0}.composer-dock{flex:none;padding:12px 30px max(16px,env(safe-area-inset-bottom));background:var(--bg);width:100%}#composer{max-width:744px;margin:0 auto;border:1px solid var(--line);border-radius:24px;padding:14px;background:var(--bg);box-shadow:0 4px 20px #00000005}#composer:focus-within{border-color:var(--muted)}#prompt{display:block;resize:none;width:100%;height:54px;min-height:54px;max-height:160px;overflow-y:auto;border:0;border-radius:8px;padding:6px 8px;background:transparent;color:var(--ink);font-size:15px;line-height:1.55}#prompt:focus{outline:none}#composer:has(#prompt:focus-visible){outline:2px solid var(--focus);outline-offset:2px}#prompt::placeholder{color:var(--muted)}.composer-tools{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:8px}.mode-switch{display:flex;align-items:center;border-radius:30px;padding:3px;background:var(--box)}.mode-switch button{min-height:36px;font-size:12px;padding:7px 14px;border-radius:24px;color:var(--muted);white-space:nowrap}.mode-switch button[aria-pressed=true]{background:var(--bg);color:var(--red);box-shadow:0 1px 4px #0000000c}.mode-switch span{margin-left:3px}.send-tools{display:flex;align-items:center;gap:8px}.settings-button{font-size:12px;color:var(--muted);padding:8px;white-space:nowrap}.settings-button span{margin-left:5px}.send-button{border-radius:50%;width:42px;min-width:42px;min-height:42px;height:42px;padding:0;font-size:25px}.composer-caption{max-width:730px;margin:9px auto 0;display:flex;justify-content:space-between;gap:10px;font-size:11px;padding:0 4px}#notice{flex:none;margin:10px 28px 0;padding:10px 14px;background:var(--soft);color:var(--red);border-radius:10px;font-size:12px;max-height:90px;overflow-y:auto}
#dashboard{flex:1;min-height:0;overflow-y:auto;padding:32px clamp(20px,4vw,64px)}.dash-head{display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--muted);font-size:13px}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:30px 0 40px}.metrics article{padding:24px;border-radius:18px;background:var(--box);min-width:0}.metrics p{font-size:12px;color:var(--muted);margin:0 0 12px}.metrics strong{display:block;font-size:26px;font-weight:500;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.metrics small{display:block;color:var(--muted);font-size:11px;margin-top:12px}h2{font-size:18px;font-weight:500}.table-wrap{width:100%;overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}td,th{padding:16px 10px;text-align:right;border-bottom:1px solid var(--line);font-weight:400;font-variant-numeric:tabular-nums}th{color:var(--muted);white-space:nowrap}td:first-child,th:first-child{text-align:left}td:first-child{overflow-wrap:anywhere}#cost-note{font-size:12px;color:var(--muted);margin-top:24px}
input,select{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:12px;width:100%;min-height:44px}.entrance{max-width:400px;margin:0 auto;padding:clamp(24px,12vh,120px) 24px 40px;height:100%;overflow-y:auto}.entrance h1{font-size:25px;line-height:1.35;font-weight:500;margin:36px 0 8px}.entrance>p{font-size:13px;margin:0 0 32px}.entrance form{display:grid;gap:12px}.entrance label{font-size:12px;color:var(--muted)}.entrance .primary{margin-top:8px}#login-note,#name-error{color:var(--red);font-size:12px}dialog{border:1px solid var(--line);border-radius:24px;padding:26px;background:var(--bg);color:var(--ink);width:min(400px,calc(100% - 32px));max-height:calc(100dvh - 32px);overflow:auto;box-shadow:0 16px 70px #0002}dialog::backdrop{background:#0005}dialog h2{margin:0 0 20px}dialog label{display:block;font-size:13px;margin:18px 0 8px}dialog input{margin-bottom:20px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px}.dialog-head{display:flex;justify-content:space-between;align-items:center}.dialog-head h2{margin:0}.model-label{font-size:12px;color:var(--muted);margin:2px 0 22px}#settings-dialog .small{line-height:1.6;margin:18px 0 22px}.dash-head select{width:auto;font-size:13px}
@media(max-width:1050px){#app{grid-template-columns:220px minmax(0,1fr)}.topbar{padding:14px 24px}.metrics{gap:12px}.metrics article{padding:18px}.metrics strong{font-size:23px}}
@media(max-width:760px){.mobile{display:inline-grid}#app{display:block;position:relative}#main{height:100%}#sidebar{position:absolute;left:0;top:0;bottom:0;width:min(300px,calc(100% - 44px));z-index:30;transform:translateX(-100%);visibility:hidden;transition:transform .18s ease}#app.menu-open #sidebar{transform:translateX(0);visibility:visible}#scrim{position:absolute;inset:0;border-radius:0;background:#0006;width:100%;height:100%;z-index:25}.topbar{height:72px;padding:10px 14px 10px 6px;gap:7px}.heading h1{font-size:16px}.heading p{font-size:11px}.personal{display:none}#messages{padding:26px 20px 12px}.message.model{font-size:16px;line-height:1.85;padding:0}.message.user{max-width:94%;padding:14px 16px;font-size:14px}.message{margin-bottom:30px}.composer-dock{padding:10px 12px max(10px,env(safe-area-inset-bottom))}#composer{padding:10px;border-radius:22px}#prompt{font-size:16px;max-height:min(140px,25dvh);min-height:50px;height:50px}.composer-tools{gap:4px}.mode-switch button{padding:8px 11px;min-height:40px}.send-tools{gap:2px}.settings-button{font-size:11px;padding:8px 6px;min-height:44px}.send-button{min-height:44px;height:44px;width:44px;min-width:44px}.composer-caption{font-size:10px;padding:0 4px;margin-top:7px}.metrics{grid-template-columns:1fr;margin:24px 0}.metrics article{padding:20px}.metrics strong{font-size:28px}#dashboard{padding:24px 20px}#notice{margin:8px 16px 0}input,select{font-size:16px}.empty{padding:48px 0 20px}.empty h2{font-size:22px}}
@media(max-width:360px){#messages{padding:22px 14px 8px}.mode-switch button{padding:8px 9px}.settings-button{padding:8px 3px;font-size:11px}.settings-button span{margin-left:1px}.composer-dock{padding-left:8px;padding-right:8px}#composer{padding:8px}.composer-caption{font-size:10px}.dash-head{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){#sidebar{transition:none}}
/* Conversation actions remain visible on touch screens. */
.message-actions{display:flex;gap:8px;justify-content:flex-start;margin-top:14px;white-space:normal}
.message.user .message-actions{justify-content:flex-end;margin-top:8px}
.message-action{font-size:12px;color:var(--muted);padding:7px 10px;min-height:36px}
.message-action:hover{background:var(--soft);color:var(--red)}
.history-button{font-size:12px;color:var(--muted);padding:8px 10px;flex:none}
#edit-banner{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 6px 10px;color:var(--red);font-size:12px;border-bottom:1px solid var(--line);margin-bottom:8px}
#edit-banner button{font-size:12px;flex:none;padding:6px 8px}
.send-button{width:auto;min-width:76px;padding:0 12px;font-size:12px;border-radius:24px;white-space:nowrap}
.send-button span{font-size:18px;margin-left:4px}
.version-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.version-row p{font-size:13px;margin:0 0 4px}.version-row small{font-size:11px;color:var(--muted)}.version-row button{font-size:12px;color:var(--red);flex:none;padding:8px}
#versions-note{font-size:12px;color:var(--muted)}#regenerate-dialog>p{font-size:13px}
@media(max-width:760px){.message-action{min-height:44px}.history-button{padding:6px;font-size:11px}.send-button{min-width:70px;padding:0 10px}.send-button span{margin-left:2px}.settings-button{font-size:11px}#edit-banner{font-size:11px}.mode-switch button{padding:8px 9px}}