/* wenyu — "paper & ink" theme. Class names match app.js; do not rename. */
:root{
  color-scheme:light;
  --paper:#f4f0e8;--paper-2:#ede7dc;--card:#fbf9f4;--sidebar:#ebe5d9;
  --ink:#1d1b18;--ink-2:#3b3732;--muted:#6f685d;--faint:#8f877a;
  --line:#d9d1c3;--line-2:#cbc1af;
  --vermilion:#b8432a;--vermilion-soft:#b8432a1a;--moss:#5d6b4f;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  --sans:"Segoe UI Variable Text","Segoe UI",-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"Cascadia Code","SFMono-Regular",Consolas,monospace;
  --r:6px;
  font:15px/1.6 var(--sans);color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
*{box-sizing:border-box}body{margin:0}
button,input,textarea,select{font:inherit}
button{cursor:pointer;color:inherit;border:0;background:transparent}
button:disabled{cursor:wait;opacity:.45}
:focus-visible{outline:2px solid var(--vermilion);outline-offset:3px}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}
::selection{background:#b8432a2e}
.i{width:18px;height:18px;flex-shrink:0;display:block}

/* ---------- layout ---------- */
.app{display:flex;height:100dvh;min-height:480px}
.sidebar{width:264px;flex-shrink:0;background:var(--sidebar);display:flex;flex-direction:column;padding:28px 16px 16px;border-right:1px solid var(--line)}
main{display:flex;flex:1;min-width:0;flex-direction:column;position:relative;overflow:hidden;
  background:
    radial-gradient(ellipse at 80% 0%,#fffdf8 0,transparent 55%),
    var(--paper)}
main::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.4 0 0 0 0 0.33 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
main>*{position:relative}

/* ---------- brand ---------- */
.brand{display:flex;align-items:center;gap:10px;font:600 25px/1 var(--serif);letter-spacing:-.5px;color:var(--ink)}
.brand-mark{display:grid;place-items:center;width:30px;height:30px;border-radius:3px;background:var(--vermilion);color:#fbf4ea;font:600 19px/1 var(--serif);font-style:italic;transform:rotate(-4deg);box-shadow:inset 0 0 0 2px #fbf4ea33}
.brand-dot{width:5px;height:5px;border-radius:50%;background:var(--vermilion);margin-left:-6px;margin-top:12px}
.sidebar .brand{margin:0 10px 30px}

/* ---------- sidebar ---------- */
.new-chat{display:flex;align-items:center;gap:9px;width:100%;padding:11px 12px;background:var(--ink);color:var(--paper);border-radius:var(--r);font-size:14px;font-weight:500;transition:background .2s,transform .2s}
.new-chat:hover{background:#000;transform:translateY(-1px)}
.new-chat>span{display:grid}
kbd{margin-left:auto;font:11px var(--mono);color:#b9b0a1;white-space:nowrap}
.search{display:flex;align-items:center;gap:9px;margin:16px 0 18px;padding:0 10px;border-bottom:1px solid var(--line-2);color:var(--muted)}
.search:focus-within{border-color:var(--ink)}
.search input{width:100%;min-width:0;background:transparent;border:0;outline:0;padding:9px 0;font-size:14px;color:var(--ink)}
input::placeholder,textarea::placeholder{color:var(--faint)}
.history-heading{display:flex;justify-content:space-between;align-items:baseline;padding:4px 10px 10px;font:italic 14px var(--serif);color:var(--muted)}
.history-heading span{font:11px var(--mono);font-style:normal}
#history{overflow-y:auto;flex:1;min-height:0;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.history-empty{font-size:13px;line-height:1.8;color:var(--muted);padding:10px;white-space:pre-line}
.chat-item{display:flex;align-items:center;border-radius:var(--r);margin-bottom:2px;transition:background .15s;border-left:2px solid transparent}
.chat-item:hover{background:#e2dbcd}
.chat-item.active{background:var(--card);border-left-color:var(--vermilion);box-shadow:0 1px 0 var(--line)}
.chat-title{flex:1;min-width:0;text-align:left;padding:9px 10px;font-size:14px;color:var(--ink-2)}
.chat-title>span,.chat-title>small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-title>small{margin-top:3px;color:var(--muted);font-size:12px}
.chat-item.active .chat-title{color:var(--ink)}
.chat-edit{flex:none;padding:6px 9px;border-radius:4px;font-size:16px;color:var(--muted);opacity:0;transition:opacity .15s}
.chat-item:hover .chat-edit,.chat-item.active .chat-edit,.chat-edit:focus-visible{opacity:1}
.chat-edit:hover{background:var(--paper-2);color:var(--ink)}
.delete-chat{font-size:16px;color:var(--muted);padding:7px;opacity:0}
.chat-item:hover .delete-chat,.delete-chat:focus-visible{opacity:1}
.sidebar-bottom{margin-top:12px;border-top:1px solid var(--line-2);padding-top:14px}
.admin-nav{display:flex;align-items:center;gap:9px;width:100%;text-align:left;padding:9px 10px;margin-bottom:10px;border:1px solid var(--line-2);border-radius:var(--r);font-size:13px;color:var(--ink-2)}
.admin-nav:hover{background:var(--card)}
.private-note{display:flex;gap:8px;align-items:center;margin:0 10px 14px;font-size:12px;color:var(--muted)}
.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--moss)}
.profile{display:flex;align-items:center;width:100%;gap:10px;text-align:left;padding:6px 8px;border-radius:var(--r)}
.profile:hover{background:#e2dbcd}
.profile>span:nth-child(2){font-size:14px;font-weight:500}
.profile small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:2px}
.avatar,.account-shortcut{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--card);border:1px solid var(--line-2);font:600 14px var(--serif);color:var(--ink)}
.gear{margin-left:auto;color:var(--muted)}

/* ---------- header ---------- */
header{height:68px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;flex-shrink:0;border-bottom:1px solid var(--line)}
.header-left,.header-right,.model-picker{display:flex;align-items:center;gap:12px}
.model-spark{width:7px;height:7px;border-radius:50%;background:var(--vermilion)}
select{border:0;background:transparent;color:var(--ink);font:500 15px var(--sans);padding:6px 4px;max-width:220px;cursor:pointer}
select option{background:var(--card);color:var(--ink)}
.model-tag{font-size:12px;border:1px solid var(--line-2);border-radius:4px;color:var(--muted);padding:2px 6px}
.manage-models{display:grid;place-items:center;width:28px;height:28px;border:1px solid var(--line-2);border-radius:var(--r);color:var(--ink-2);transition:background .15s}
.manage-models:hover{background:var(--card)}
.manage-models .i{width:15px;height:15px}
.icon-button{display:grid;place-items:center;width:34px;height:34px;border-radius:var(--r);color:var(--ink-2);font-size:20px;transition:background .15s}
.icon-button:hover{background:var(--paper-2)}
.account-shortcut{width:30px;height:30px;font-size:13px}
.connection{font-size:12px;color:var(--muted);display:flex;align-items:center}
.connection::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--moss);margin-right:8px}
.notice{text-align:center;font-size:13px;color:var(--ink-2);padding:8px;background:var(--vermilion-soft);border-bottom:1px solid var(--line)}

/* ---------- welcome ---------- */
.conversation{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;scroll-behavior:smooth;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.welcome{max-width:920px;margin:0 auto;padding:28px 48px 12px;animation:arrive .7s both}
.welcome-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--line)}
.space-label{display:flex;align-items:center;gap:8px;font:11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.motion-button{font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:4px 0;border-bottom:1px solid transparent}
.motion-button:hover{color:var(--ink);border-bottom-color:var(--ink)}
.hero-stage{position:relative;min-height:320px;display:flex;align-items:center}
.hero-copy{z-index:1;padding-top:12px;pointer-events:none;max-width:560px}
.hello{margin:0 0 18px;font:italic 17px var(--serif);color:var(--vermilion)}
h1{margin:0 0 22px;font:400 clamp(40px,5vw,66px)/1.04 var(--serif);letter-spacing:-.025em;color:var(--ink)}
.hero-copy h1{text-wrap:balance}
.welcome-description{margin:0;font-size:16px;line-height:1.75;color:var(--ink-2)}
.orb-scene{position:absolute;right:-10px;top:10px;width:320px;height:300px;transform:translate3d(var(--orb-x,0px),var(--orb-y,0px),0);transition:transform .6s ease-out;pointer-events:none}
.enso{width:100%;height:100%;overflow:visible}
.enso-stroke{fill:none;stroke:var(--ink);stroke-width:13;stroke-linecap:round;stroke-dasharray:610 1000;stroke-dashoffset:0;transform:rotate(-70deg);transform-origin:160px 150px;opacity:.9;animation:ink-draw 2.2s cubic-bezier(.6,.05,.3,1) both}
.enso-echo{fill:none;stroke:var(--ink);stroke-width:2.5;stroke-linecap:round;stroke-dasharray:420 1000;transform:rotate(-40deg);transform-origin:160px 150px;opacity:.3;animation:ink-draw 2.6s .3s cubic-bezier(.6,.05,.3,1) both}
.seal rect{fill:var(--vermilion)}
.seal text{fill:#fbf4ea;font:600 27px var(--serif)}
.seal{animation:seal-in .5s 1.8s both}
.suggestion-heading{display:flex;align-items:center;gap:14px;margin:6px 0 14px;font:italic 15px var(--serif);color:var(--muted)}
.suggestion-line{flex:1;height:1px;background:var(--line)}
.suggestions{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--line)}
.suggestions button{display:flex;align-items:flex-start;gap:12px;min-width:0;text-align:left;padding:18px 16px 18px 0;transition:background .2s}
.suggestions button+button{border-left:1px solid var(--line);padding-left:16px}
.suggestions button:hover{background:#ece6da}
.suggestion-icon{color:var(--vermilion);padding-top:2px}
.suggestions strong{display:block;margin-bottom:4px;font:500 17px var(--serif);color:var(--ink)}
.suggestions small{display:block;font-size:13px;line-height:1.5;color:var(--muted)}
.suggestion-arrow{margin-left:auto;color:var(--faint);transition:transform .2s,color .2s}
.suggestions button:hover .suggestion-arrow{transform:translateX(3px);color:var(--vermilion)}

/* ---------- composer ---------- */
.composer-area{width:min(920px,100%);margin:0 auto;padding:16px 48px 14px;flex-shrink:0}
.composer{background:var(--card);border:1px solid var(--line-2);border-radius:10px;padding:16px 16px 11px;box-shadow:0 1px 0 var(--line),0 14px 30px -18px #3b302040;transition:border-color .2s,box-shadow .2s}
.composer:focus-within{border-color:var(--ink);box-shadow:0 1px 0 var(--line),0 18px 36px -18px #3b302055}
.composer textarea{display:block;resize:none;width:100%;min-height:52px;max-height:180px;padding:0 2px;background:transparent;border:0;outline:0;color:var(--ink)}
.composer-toolbar,.composer-options,.send-controls{display:flex;align-items:center;gap:10px}
.composer-toolbar{justify-content:space-between;margin-top:8px}
.attach-file,.thinking{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--ink-2);white-space:nowrap;transition:background .15s,border-color .15s,color .15s}
.attach-file .i,.thinking .i{width:15px;height:15px}
.attach-file:hover,.thinking:hover{background:var(--paper-2);border-color:var(--line-2)}
.thinking[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.context-note{font-size:12px;color:var(--muted)}
#credit-balance{color:var(--moss)}
.keyboard-tip{font:11px var(--mono);color:var(--faint)}
.send{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--vermilion);color:#fff7ee;font-size:18px;transition:transform .2s,background .2s}
.send:hover{background:#9c3620;transform:translateY(-1px)}
.send.stop{background:var(--ink);font-size:12px;animation:send-pulse 1.6s ease-in-out infinite}
.footer-note{margin:12px 0 0;text-align:center;font-size:12px;line-height:1.6;color:var(--muted)}
.icp-link{display:inline-block;margin-top:4px;font-size:12px;color:var(--faint)}
.icp-link:hover{color:var(--ink);text-decoration:underline}
.draft-files{display:flex;flex-wrap:wrap;gap:6px}
.draft-files:not(:empty){margin:8px 0}
.draft-files button{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:3px 9px;border:1px solid var(--line-2);border-radius:999px;font-size:12px;background:var(--paper)}
.draft-files button:hover{border-color:var(--vermilion);color:var(--vermilion)}

/* ---------- messages ---------- */
.messages{max-width:780px;margin:0 auto;padding:36px 48px}
.message{margin-bottom:34px;animation:message-in .35s ease-out}
.message.user{display:flex;justify-content:flex-end;margin-left:14%}
.user-text{max-width:100%;white-space:pre-wrap;overflow-wrap:anywhere;padding:12px 18px;border-radius:12px 12px 2px 12px;background:var(--paper-2);border:1px solid var(--line)}
.message-file{margin-top:8px;padding-top:6px;border-top:1px solid var(--line-2)}
.message-file summary{cursor:pointer;font-size:13px;color:var(--muted)}
.message-file pre{max-height:18rem;overflow:auto;white-space:pre-wrap;font:13px/1.6 var(--mono)}
.assistant-label{display:flex;align-items:center;gap:9px;margin-bottom:12px;font:italic 15px var(--serif);color:var(--muted)}
.mini-mark{display:grid;place-items:center;width:22px;height:22px;border-radius:3px;background:var(--vermilion);color:#fbf4ea;font:600 14px var(--serif);font-style:italic;transform:rotate(-4deg)}
.answer{overflow-wrap:anywhere;color:var(--ink)}
.answer h2,.answer h3{margin:22px 0 8px;font:500 20px/1.3 var(--serif)}
.answer p{margin:0 0 12px;white-space:pre-wrap}
.answer p:has(>br:only-child){margin:0;line-height:.5}
.answer ul{padding-left:22px;margin:0 0 14px}
.answer li{margin-bottom:4px}
.answer li::marker{color:var(--vermilion)}
.answer strong{font-weight:600}
.answer a{color:var(--vermilion);text-decoration:underline;text-underline-offset:3px}
.answer pre{overflow-x:auto;padding:16px 18px;margin:0 0 14px;background:#25221e;color:#efe8db;border-radius:8px;font:13.5px/1.7 var(--mono)}
.answer :not(pre)>code{padding:1px 6px;background:var(--paper-2);border:1px solid var(--line);border-radius:4px;font-size:.88em}
.answer code{font-family:var(--mono)}
.copy-button{margin-top:4px;padding:4px 0;font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.copy-button:hover{color:var(--ink)}
.reasoning{margin-bottom:16px;padding-left:14px;border-left:2px solid var(--line-2);white-space:pre-wrap;font-size:14px;color:var(--muted)}
.reasoning summary{cursor:pointer;white-space:normal;font:italic 14px var(--serif)}
.message.streaming .assistant-label::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--vermilion);animation:twinkle 1s infinite}
.message.streaming .answer::after{content:"";display:inline-block;width:2px;height:1.1em;margin-left:3px;vertical-align:-2px;background:var(--ink);animation:twinkle 1s infinite}
.mobile-only,.shade{display:none}

/* ---------- sign in ---------- */
.auth-screen{position:fixed;inset:0;z-index:20;display:grid;grid-template-columns:1.1fr 1fr;overflow:auto;background:var(--paper)}
.auth-story{position:relative;display:flex;flex-direction:column;min-height:100dvh;padding:40px 48px 28px;overflow:hidden;background:var(--sidebar);border-right:1px solid var(--line)}
.auth-story>.brand{z-index:2}
.auth-art{position:relative;width:340px;height:300px;margin:28px auto 0;flex-shrink:0}
.auth-story-copy{z-index:1;width:100%;max-width:440px;margin:0 auto 40px}
.auth-story-copy .space-label{margin-bottom:20px}
.auth-story h2{margin:0 0 20px;font:400 clamp(38px,4vw,56px)/1.05 var(--serif);letter-spacing:-.02em}
.auth-story-copy p{font-size:16px;line-height:1.75;color:var(--ink-2)}
.auth-bottom{display:flex;justify-content:space-between;gap:15px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line-2);font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.auth-panel{display:flex;align-items:center;justify-content:center;padding:50px 40px}
.auth-panel-inner{width:100%;max-width:370px;animation:arrive .7s both}
.auth-kicker{font:11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--vermilion)}
.auth-panel h1{margin:14px 0 10px;font-size:44px}
.auth-intro{margin:0 0 32px;font-size:15px;line-height:1.75;color:var(--ink-2)}
#login-form>label,.password-label label{display:block;margin:0 0 8px;font-size:13px;font-weight:500;color:var(--ink-2)}
.auth-panel input:not([type=checkbox]){width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--card);color:var(--ink);font-size:16px;transition:border-color .15s,box-shadow .15s}
.auth-panel input:not([type=checkbox]):focus{outline:0;border-color:var(--ink);box-shadow:0 0 0 3px #1d1b1810}
.password-label{display:flex;align-items:center;justify-content:space-between;margin-top:20px}
.password-label>span{margin-bottom:8px;font-size:12px;color:var(--muted)}
.password-input{position:relative}
.password-input input{padding-right:64px!important}
.password-input button{position:absolute;right:8px;top:8px;height:28px;padding:0 8px;font:11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.password-input button:hover{color:var(--ink)}
.remember-row{display:flex!important;align-items:center;gap:8px;margin-top:16px!important;font-size:13px!important;color:var(--ink-2)!important;cursor:pointer}
.remember-row input{accent-color:var(--vermilion);width:15px;height:15px;margin:0}
.form-error{min-height:18px;margin:14px 0 8px;font-size:13px;line-height:1.5;color:var(--vermilion)}
.primary{display:flex;align-items:center;justify-content:space-between;width:100%;padding:13px 16px;border-radius:var(--r);background:var(--ink);color:var(--paper);font-size:15px;font-weight:500;transition:background .2s,transform .2s}
.primary:hover{background:#000;transform:translateY(-1px)}
.primary>span{font-size:18px;transition:transform .2s}
.primary:hover>span{transform:translateX(3px)}
.auth-divider{display:flex;align-items:center;gap:14px;margin:28px 0 16px}
.auth-divider>span{flex:1;height:1px;background:var(--line-2)}
.auth-divider small{font:italic 14px var(--serif);color:var(--muted)}
.auth-help,.auth-footnote{font-size:13px;line-height:1.7;text-align:center;color:var(--muted)}
.auth-footnote{margin-top:22px;font-size:12px}
.demo-enter{width:100%;margin-top:14px;padding:10px;border:1px solid var(--line-2);border-radius:var(--r);font-size:14px;color:var(--ink-2)}
.demo-enter:hover{background:var(--card)}
.auth-pending .app{visibility:hidden}

/* ---------- dialogs ---------- */
dialog{width:min(440px,calc(100% - 32px));padding:28px;color:var(--ink);background:var(--card);border:1px solid var(--line-2);border-radius:12px;box-shadow:0 30px 80px -20px #2a201455;animation:dialog-in .22s ease-out}
dialog::backdrop{background:#2a24196b;backdrop-filter:blur(3px)}
dialog h2{margin:0 0 12px;font:400 26px/1.2 var(--serif);letter-spacing:-.01em}
dialog p{font-size:14px;line-height:1.7;color:var(--ink-2)}
.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.dialog-heading h2{margin:0}
.usage-grid{display:flex;gap:0;margin:22px 0;border-top:1px solid var(--ink);border-bottom:1px solid var(--line)}
.usage-grid>div{flex:1;min-width:0;padding:16px 14px 16px 0}
.usage-grid>div+div{padding-left:16px;border-left:1px solid var(--line)}
.usage-grid span{font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.usage-grid strong{display:block;margin-top:8px;font:400 30px/1.1 var(--serif);overflow-wrap:anywhere;color:var(--ink)}
.settings-note{font-size:13px!important;line-height:1.7;color:var(--muted)!important}
.secondary{padding:9px 15px;border:1px solid var(--line-2);border-radius:var(--r);font-size:13px;color:var(--ink);background:var(--card);transition:background .15s,border-color .15s}
.secondary:hover{background:var(--paper-2);border-color:var(--ink-2)}
.danger{padding:9px 15px;border-radius:var(--r);background:var(--vermilion);color:#fff;font-size:13px}
.danger:hover{background:#9c3620}
.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}
.toast{position:fixed;bottom:26px;left:50%;z-index:30;max-width:90%;padding:11px 20px;transform:translateX(-50%);background:var(--ink);color:var(--paper);border-radius:999px;font-size:14px;line-height:1.6;box-shadow:0 12px 30px -10px #0006;animation:toast-in .2s ease-out}

/* models */
#models-dialog{width:min(520px,calc(100% - 28px));max-height:90dvh;overflow:auto}
.model-list{max-height:280px;margin:18px 0;overflow-y:auto;scrollbar-width:thin;border-top:1px solid var(--line)}
.model-row{display:flex;align-items:center;border-bottom:1px solid var(--line)}
.model-choice{position:relative;flex:1;min-width:0;padding:12px 96px 12px 4px;text-align:left}
.model-choice:hover{background:var(--paper)}
.model-choice strong{display:block;font:500 16px var(--serif);overflow-wrap:anywhere}
.model-choice small{display:block;margin-top:3px;font:12px var(--mono);color:var(--muted);overflow-wrap:anywhere}
.model-check{position:absolute;right:10px;top:16px;font:11px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--vermilion)}
.remove-model{padding:12px;font-size:18px;color:var(--muted)}
.remove-model:hover{color:var(--vermilion)}
#model-form>label{display:block;margin:20px 0 8px;font-size:13px;font-weight:500;color:var(--ink-2)}
.model-input-row{display:flex;gap:8px}
.model-input-row input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--paper);color:var(--ink);font-size:15px}
.model-input-row .secondary{white-space:nowrap}
.model-docs{font-size:13px;color:var(--vermilion)}
.model-docs:hover{text-decoration:underline}

/* admin */
.admin-eyebrow{display:block;margin-bottom:6px;font:11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--vermilion)}
#admin-dialog{width:min(940px,calc(100% - 28px));max-height:90dvh;overflow:auto}
.admin-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:22px}
.admin-layout h3{margin:0 0 16px;font:400 20px var(--serif)}
.admin-layout label{display:block;margin:16px 0 7px;font-size:14px;font-weight:500;color:var(--ink-2)}
.admin-layout input{width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--paper);color:var(--ink);font-size:16px}
.admin-layout form>small{display:block;margin-top:6px;font-size:12px;line-height:1.7;color:var(--muted)}
#create-user-form .primary{margin-top:6px}
.member-section{padding-left:28px;border-left:1px solid var(--line)}
.member-heading{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.member-heading>span{font:12px var(--mono);color:var(--muted)}
.member-list{max-height:62dvh;overflow-y:auto;scrollbar-width:thin}
#member-picker{width:100%;max-width:none;margin:0 0 16px;padding:11px;color:var(--ink);background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);font-size:16px}
.member-row{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
.member-row>div{min-width:0}
.member-row strong{display:block;font:400 20px/1.4 var(--serif);overflow-wrap:anywhere}
.member-row small{display:block;margin-top:4px;font-size:12px}
.member-active{color:var(--moss)}
.member-disabled{color:var(--vermilion)}
.quota-stats{color:var(--muted)}
.member-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.member-row .secondary{padding:7px 11px;font-size:12px}
.quota-form{display:flex;flex-wrap:wrap;align-items:end;gap:8px;width:100%;min-width:0}
.quota-form label{margin:0;font-size:12px}
.quota-form input{display:block;width:100%;margin-top:6px;padding:8px}
.quota-form>input{width:100%;padding:8px}
.quota-form button{white-space:nowrap}
.credit-history{max-height:180px;margin-top:12px;padding-left:12px;overflow:auto;border-left:2px solid var(--vermilion)}
.credit-history p{font:12px/1.6 var(--mono);overflow-wrap:anywhere}

/* organize */
.organize-form>label{display:block;margin:16px 0 6px;font-size:14px;font-weight:500;color:var(--ink-2)}
.organize-form input[type=text]{display:block;width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:var(--r);background:var(--paper);color:var(--ink);font-size:16px}
.organize-form small{display:block;margin-top:6px;color:var(--muted)}
.organize-pin{display:flex!important;align-items:center;gap:8px}
.organize-pin input{accent-color:var(--vermilion)}
#organize-error{color:var(--vermilion);font-size:13px}

/* ---------- motion ---------- */
@keyframes ink-draw{from{stroke-dashoffset:610}to{stroke-dashoffset:0}}
@keyframes seal-in{from{opacity:0;transform:translate(236px,196px) rotate(-6deg) scale(1.4)}to{opacity:1;transform:translate(236px,196px) rotate(-6deg) scale(1)}}
@keyframes twinkle{0%,100%{opacity:.25}50%{opacity:1}}
@keyframes arrive{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes message-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes dialog-in{from{opacity:0;scale:.97}to{opacity:1;scale:1}}
@keyframes toast-in{from{opacity:0;translate:0 8px}to{opacity:1;translate:0 0}}
@keyframes send-pulse{50%{box-shadow:0 0 0 6px #1d1b1814}}
body.reduce-motion *,body.reduce-motion *::before,body.reduce-motion *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
.reduce-motion .orb-scene{transform:none!important}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.orb-scene{transform:none!important}}

/* ---------- responsive ---------- */
@media(min-width:1450px){.welcome{padding-top:44px}.hero-stage{min-height:380px}.orb-scene{right:10px;top:30px;scale:1.12}.composer-area{padding-bottom:22px}}
@media(max-width:1100px){.sidebar{width:228px;padding-left:12px;padding-right:12px}.welcome,.composer-area{padding-left:32px;padding-right:32px}.orb-scene{right:-50px;scale:.82;transform-origin:right center}.context-note{display:none}.header-right{gap:8px}.suggestion-arrow{display:none}}
@media(max-width:860px){.orb-scene{opacity:.35;right:-70px}.suggestions{grid-template-columns:1fr}.suggestions button,.suggestions button+button{padding:14px 4px;border-left:0}.suggestions button+button{border-top:1px solid var(--line)}.suggestion-arrow{display:block}.auth-story{padding:32px}.auth-art{scale:.85}.auth-panel{padding:36px 28px}}
@media(max-width:720px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:5;width:276px;transform:translateX(-100%);transition:transform .3s ease;box-shadow:20px 0 40px -20px #2a201440}
  .sidebar.open{transform:none}
  .shade:not([hidden]){display:block;position:fixed;inset:0;z-index:4;background:#2a24194d;backdrop-filter:blur(2px)}
  .mobile-only{display:grid}
  header{height:58px;padding:0 12px}
  .header-left,.header-right,.model-picker{gap:6px}
  .account-shortcut{display:none}
  select,.model-picker select{font-size:14px;max-width:150px}
  .welcome{padding:18px 20px 8px}
  .hero-stage{min-height:300px;align-items:flex-end;padding-bottom:22px}
  .orb-scene{right:-14px;top:6px;scale:.42;opacity:.9;transform-origin:right top}
  .hero-copy{padding-top:120px}
  .connection{display:none}
  .hero-copy h1{font-size:42px}
  .welcome-description{font-size:15px}
  .composer-area{padding:10px 12px max(12px,env(safe-area-inset-bottom))}
  .composer{padding:13px 13px 10px}
  .composer textarea{font-size:16px;min-height:44px}
  .keyboard-tip{display:none}
  .footer-note{max-width:320px;margin:10px auto 0}
  .messages{padding:24px 18px}
  .message.user{margin-left:8%}
  .chat-edit{opacity:1}
  .auth-screen{display:block}
  .auth-story{display:none}
  .auth-panel{min-height:100dvh;padding:40px 24px}
  .auth-panel-inner::before{content:"wenyu";display:block;margin-bottom:52px;font:600 30px var(--serif);letter-spacing:-.5px;color:var(--ink)}
  .auth-panel h1{font-size:40px}
  .model-input-row input{font-size:16px}
}
@media(max-width:620px){.admin-layout{grid-template-columns:1fr;gap:24px}.member-section{padding:22px 0 0;border-left:0;border-top:1px solid var(--line)}.member-list{max-height:240px}#admin-dialog{padding:22px}}
@media(max-width:440px){.composer-options{gap:6px}.attach-file,.thinking{padding:5px 8px;font-size:12px}}
@media(max-height:760px) and (min-width:721px){.welcome{padding-top:18px}.hero-stage{min-height:270px}.hero-copy h1{font-size:50px;margin-bottom:16px}.orb-scene{top:-8px;scale:.85}.auth-art{height:240px;scale:.8;margin-top:0}.auth-story-copy{margin-bottom:20px}.auth-story-copy h2{font-size:44px}}