/* =====================================================================
   chat — ported from the approved prototype.
   Every color here comes from tokens.css; none are literals except the
   code-block surface, which is deliberately fixed dark in both themes.
   ===================================================================== */
/* ---------- chat ---------- */
.chat-wrap{flex:1;display:flex;flex-direction:column;background:var(--color-surface-background);min-height:0}
.chat-scroll{flex:1;overflow-y:auto;padding:14px 14px 10px;display:flex;flex-direction:column;gap:14px}

/* token badge — the header span that does nothing today becomes a real button */
.tokbadge{
  flex:0 0 auto;display:flex;align-items:center;gap:5px;
  padding:5px 10px;border-radius:99px;border:1px solid transparent;
  font-family:inherit;font-size:11px;font-weight:600;cursor:pointer;
}
.tokbadge svg{width:12px;height:12px}
.tokbadge.ok  {background:var(--color-primary-subtle);color:var(--color-primary-default);border-color:var(--color-primary-hover)}
.tokbadge.low {background:var(--color-warn-bg);color:var(--color-warn-fg);border-color:var(--color-warn-br)}
.tokbadge.out {background:var(--color-danger-bg);color:var(--color-danger-strong);border-color:var(--color-danger-br)}
.tokbadge.debt{background:var(--color-danger-strong);color:var(--color-text-on-primary);border-color:var(--color-danger-strong)}

/* ---------- messages ---------- */
.msg{display:flex;flex-direction:column;gap:5px;max-width:88%}
.msg.me{align-self:flex-start}          /* RTL: user sits at the start edge, matching the site */
.msg.ai{align-self:flex-end;max-width:94%}

.bubble{padding:11px 14px;border-radius:16px;font-size:14.5px;line-height:1.75}
.msg.me .bubble{background:var(--color-primary-default);color:var(--color-text-on-primary);border-end-start-radius:5px;white-space:pre-wrap}
.msg.ai .bubble{background:var(--color-surface-card);color:var(--color-text-body);border:1px solid var(--color-border-default);border-end-end-radius:5px}
.msg.err .bubble{background:var(--color-danger-bg);border-color:var(--color-danger-br);color:var(--color-danger-deep)}

/* markdown inside an answer */
.bubble h3{margin:14px 0 6px;font-size:15.5px;font-weight:700;color:var(--color-primary-default);border-bottom:1px solid var(--color-border-default);padding-bottom:4px;line-height:1.5}
.bubble h3:first-child{margin-top:0}
.bubble h4{margin:12px 0 5px;font-size:14px;font-weight:700;color:var(--color-text-title)}
.bubble p{margin:0 0 9px}
.bubble p:last-child{margin-bottom:0}
.bubble ol,.bubble ul{margin:6px 0 10px;padding-inline-start:20px}
.bubble li{margin-bottom:4px}
.bubble strong{font-weight:700;color:var(--color-text-title)}
.bubble blockquote{
  margin:9px 0;padding:7px 11px;border-radius:0 8px 8px 0;
  border-inline-start:3px solid var(--color-primary-default);
  background:var(--color-primary-subtle);color:var(--color-primary-default);font-size:13.5px;
}
.bubble code.inl{
  background:var(--color-surface-background);border:1px solid var(--color-border-default);color:var(--color-primary-default);
  padding:1px 5px;border-radius:4px;font-size:.88em;
  font-family:"JetBrains Mono",ui-monospace,Menlo,monospace;
  direction:ltr;display:inline-block;
}

/* formulas and code stay LTR inside an RTL bubble */
.mathline{
  direction:ltr;text-align:center;overflow-x:auto;
  font-family:"Iowan Old Style",Georgia,serif;font-style:italic;font-size:16px;
  color:var(--color-text-title);padding:10px 8px;margin:10px 0;
  background:var(--color-surface-background);border:1px solid var(--color-border-default);border-radius:10px;
}

.codewrap{position:relative;margin:10px 0}
.codewrap pre{
  direction:ltr;text-align:left;margin:0;
  background:var(--color-surface-code);color:var(--color-code-fg);border-radius:10px;
  padding:34px 14px 14px;overflow-x:auto;
  font-family:"JetBrains Mono",ui-monospace,Menlo,monospace;
  font-size:12.5px;line-height:1.65;
}
.codebar{position:absolute;top:7px;inset-inline-end:8px;display:flex;gap:6px;direction:ltr}
.codebtn{
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.1);
  color:var(--color-code-muted);border-radius:6px;padding:3px 9px;cursor:pointer;
  font-family:inherit;font-size:10.5px;
}
.codebtn:hover{background:rgba(255,255,255,.2);color:var(--color-text-on-primary)}
.codebtn.run{background:rgba(22,163,74,.16);border-color:rgba(74,222,128,.28);color:var(--color-code-run)}
.codebtn.copied{background:var(--color-code-ok);border-color:var(--color-code-ok);color:var(--color-text-on-primary)}

/* streaming */
.bubble.typing::after{content:"▋";color:var(--color-primary-default);animation:cursor .75s steps(1) infinite;margin-inline-start:2px}
@keyframes cursor{50%{opacity:0}}
.status{
  align-self:flex-end;display:flex;align-items:center;gap:6px;
  font-size:11px;color:var(--color-text-muted);padding:0 4px;
}
.status i{width:5px;height:5px;border-radius:50%;background:var(--color-primary-light);animation:pulse 1.1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}

/* the row under an answer: where it came from, and what you can do with it */
.msg-foot{display:flex;align-items:center;gap:7px;flex-wrap:wrap;padding:0 3px}
.srcbadge{
  display:inline-flex;align-items:center;gap:4px;
  padding:2px 8px;border-radius:8px;font-size:10.5px;border:1px solid;
}
.srcbadge.site    {color:var(--color-src-site-fg);background:var(--color-src-site-bg);border-color:var(--color-src-site-br)}
.srcbadge.external{color:var(--color-src-external-fg);background:var(--color-src-external-bg);border-color:var(--color-src-external-br)}
.srcbadge.general {color:var(--color-src-general-fg);background:var(--color-src-general-bg);border-color:var(--color-src-general-br)}
.srcbadge.code    {color:var(--color-src-code-fg);background:var(--color-src-code-bg);border-color:var(--color-src-code-br)}
.msg-acts{display:flex;gap:2px;margin-inline-start:auto}
.act{
  width:28px;height:28px;border:0;border-radius:8px;background:none;color:var(--color-text-faint);
  cursor:pointer;display:grid;place-items:center;font-size:13px;line-height:1;
}
.act:hover{background:var(--color-border-default);color:var(--color-text-body)}
.act.on{color:var(--color-primary-default);background:var(--color-primary-subtle)}
.act svg{width:14px;height:14px}
.stopped{
  align-self:flex-end;font-size:11px;color:var(--color-text-muted);
  background:var(--color-border-default);padding:3px 10px;border-radius:99px;
}
.retry{
  display:inline-flex;align-items:center;gap:6px;margin-top:2px;
  padding:6px 12px;border:1px solid var(--color-danger-br);border-radius:10px;
  background:var(--color-surface-card);color:var(--color-danger-strong);font-family:inherit;font-size:12px;cursor:pointer;
}
.retry svg{width:13px;height:13px}

/* empty state — the biggest gap on the site today */
.chat-empty{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:15px;padding:20px;text-align:center}
.chat-empty .glyph{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(140deg,var(--color-primary-glow),var(--color-primary-default));color:var(--color-text-on-primary)}
.chat-empty .glyph svg{width:32px;height:32px}
.chat-empty h3{margin:0;font-size:15.5px;font-weight:600;color:var(--color-text-title)}
.chat-empty p{margin:0;font-size:12.5px;color:var(--color-text-muted);line-height:1.9;max-width:32ch}
.seeds{display:flex;flex-direction:column;gap:7px;width:100%;max-width:290px}
.seed{
  display:flex;align-items:center;gap:9px;padding:10px 12px;
  border:1px solid var(--color-border-default);border-radius:12px;background:var(--color-surface-card);
  font-family:inherit;font-size:12.5px;color:var(--color-text-body);text-align:start;cursor:pointer;
}
.seed:hover{border-color:var(--color-border-focus);background:var(--color-primary-subtle)}
.seed .k{
  flex:0 0 auto;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  background:var(--color-primary-subtle);color:var(--color-primary-default);font-size:12px;
}

/* ---------- composer ---------- */
.composer{flex:0 0 auto;padding:9px 12px 13px;background:var(--color-surface-card);border-top:1px solid var(--color-border-default)}
.composer-row{display:flex;align-items:flex-end;gap:8px}
.composer textarea{
  flex:1;min-width:0;resize:none;font-family:inherit;
  font-size:16px;                 /* below 16 and iOS zooms the page on focus */
  line-height:1.65;padding:10px 13px;max-height:110px;
  border:1px solid var(--color-border-default);border-radius:18px;background:var(--color-surface-background);color:var(--color-text-title);
}
.composer textarea:focus{outline:none;border-color:var(--color-border-focus);background:var(--color-surface-card)}
.composer textarea:disabled{opacity:.6}
.send,.stop{
  flex:0 0 auto;width:42px;height:42px;border:0;border-radius:50%;cursor:pointer;
  display:grid;place-items:center;color:var(--color-text-on-primary);
}
.send{background:linear-gradient(140deg,var(--color-primary-light),var(--color-primary-default))}
.send:disabled{opacity:.32;cursor:default}
.stop{background:var(--color-danger)}
.send svg,.stop svg{width:19px;height:19px}
.meter{margin:8px 2px 0;font-size:10.5px;color:var(--color-text-muted);text-align:center}
.meter b{color:var(--color-primary-default)}
.meter.warn b{color:var(--color-warn-fg)}
.draft-tag{
  display:inline-flex;align-items:center;gap:6px;margin:0 2px 8px;padding:4px 9px;
  border-radius:99px;background:var(--color-primary-subtle);color:var(--color-primary-default);font-size:10.5px;font-weight:500;
}
.draft-tag svg{width:11px;height:11px}
/* The excerpt that will travel with the question. Shown, and capped at three
   lines, so nothing leaves the phone that the reader cannot see first. */
.draft-quote{
  margin:0 2px 8px;padding:7px 10px;border-radius:10px;
  background:var(--color-surface-bubble-ai);color:var(--color-text-muted);
  font-size:11px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.bubble-quote{
  margin:0 0 7px;padding:6px 9px;border-radius:9px;
  background:rgba(255,255,255,.16);font-size:11.5px;line-height:1.75;opacity:.9;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}

/* quota wall — today the site just drops a system line and leaves the box open */
.wall{
  margin:0 0 9px;padding:11px 13px;border-radius:13px;
  background:var(--color-danger-bg);border:1px solid var(--color-danger-br);
}
.wall h5{margin:0 0 3px;font-size:13px;font-weight:600;color:var(--color-danger-deep)}
.wall p{margin:0 0 9px;font-size:11.5px;line-height:1.85;color:var(--color-danger-strong)}
.wall button{
  width:100%;padding:9px;border:0;border-radius:10px;background:var(--color-danger-strong);color:var(--color-text-on-primary);
  font-family:inherit;font-size:12.5px;font-weight:600;cursor:pointer;
}

/* ---------- drawer ---------- */
.drawer{
  position:absolute;inset-block:0;inset-inline-start:0;z-index:9;
  width:84%;max-width:300px;background:var(--color-surface-card);
  display:flex;flex-direction:column;
  /* The one value logical properties cannot mirror: parking the drawer off
     the start edge needs +100% in RTL and -100% in LTR. i18n.js sets data-dir
     on the root and tokens.css flips --drawer-park. */
  transform:translateX(var(--drawer-park));
  transition:transform .3s var(--ease);
  box-shadow:0 0 40px var(--color-shadow-strong);
}
.drawer.on{transform:none}
.drawer-head{display:flex;align-items:center;gap:10px;padding:14px 16px 10px}
.drawer-head h3{margin:0;flex:1;font-size:15px;font-weight:600;color:var(--color-text-title)}
.drawer-head .iconbtn{background:var(--color-surface-background);color:var(--color-text-muted)}
.newchat{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin:0 12px 10px;padding:12px;border:0;border-radius:13px;
  background:linear-gradient(140deg,var(--color-primary-light),var(--color-primary-default));color:var(--color-text-on-primary);
  font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;
  box-shadow:0 6px 16px -8px rgba(79,70,229,.9);
}
.newchat svg{width:16px;height:16px}
.searchbox{margin:0 12px 8px;position:relative}
.searchbox input{
  width:100%;padding:9px 34px 9px 12px;border:1px solid var(--color-border-default);border-radius:11px;
  background:var(--color-surface-background);font-family:inherit;font-size:12.5px;color:var(--color-text-title);
}
.searchbox input:focus{outline:none;border-color:var(--color-border-focus);background:var(--color-surface-card)}
.searchbox svg{position:absolute;inset-inline-start:11px;top:10px;width:14px;height:14px;color:var(--color-text-faint)}
.chat-list{flex:1;overflow-y:auto;padding:0 8px 12px}
.list-head{padding:11px 8px 5px;font-size:10.5px;font-weight:600;letter-spacing:.05em;color:var(--color-text-muted)}
.chat-item{display:flex;align-items:center;gap:5px;padding:7px 8px;border-radius:11px}
.chat-item:hover{background:var(--color-surface-background)}
.chat-item.active{background:var(--color-primary-subtle)}
.chat-item .name{flex:1;min-width:0;border:0;background:none;padding:0;cursor:pointer;font-family:inherit;text-align:start}
.chat-item .n1{display:block;font-size:12.5px;color:var(--color-text-title);line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* The site's titles are the whole question cut at 70 chars, so the list reads
   as a wall of near-identical sentences. Topic chip first, then the question. */
.chat-item .n2{display:flex;align-items:center;gap:5px;margin-top:2px;font-size:10px;color:var(--color-text-muted)}
.topic{padding:1px 6px;border-radius:5px;background:var(--color-primary-subtle);color:var(--color-primary-default);font-weight:600}
.chat-item.active .topic{background:var(--color-primary-hover)}
.chat-act{flex:0 0 auto;width:28px;height:28px;border:0;border-radius:8px;background:none;color:var(--color-text-faint);cursor:pointer;display:grid;place-items:center}
.chat-act:hover{background:var(--color-border-default);color:var(--color-text-body)}
.chat-act svg{width:14px;height:14px}
/* rename happens in place, exactly as the site does it — no system dialog */
.rename-input{
  flex:1;min-width:0;padding:5px 8px;border:1px solid var(--color-primary-default);border-radius:7px;
  background:var(--color-surface-card);font-family:inherit;font-size:12.5px;color:var(--color-text-title);
}
.rename-input:focus{outline:none}
.delbar{padding:7px 8px}
.delbar p{margin:0 0 3px;font-size:12px;color:var(--color-danger-strong);font-weight:500}
.delbar .keeps{margin:0 0 7px;font-size:10px;color:var(--color-text-muted);line-height:1.7}
.delbar .row2{display:flex;gap:6px}
.delbar button{flex:1;padding:6px;border-radius:8px;font-family:inherit;font-size:11.5px;cursor:pointer}
.del-yes{border:1px solid var(--color-danger-br);background:var(--color-danger-bg);color:var(--color-danger-strong);font-weight:600}
.del-no{border:1px solid var(--color-border-default);background:var(--color-surface-card);color:var(--color-text-body)}
.drawer-foot{padding:11px 16px;border-top:1px solid var(--color-border-default);font-size:10.5px;color:var(--color-text-muted);line-height:1.9}
.drawer-foot b{color:var(--color-primary-default)}

/* ---------- experimental notice ---------- */
.lab-note{
  flex:0 0 auto;display:flex;gap:8px;align-items:flex-start;
  padding:8px 14px;background:var(--color-warn-bg);border-bottom:1px solid var(--color-warn-br);
  color:var(--color-warn-fg);font-size:11px;line-height:1.8;
}
.lab-note svg{width:14px;height:14px;flex:0 0 auto;margin-top:2px;color:var(--color-warn-icon)}

/* ---------- python sheet ---------- */
.pysheet{
  position:absolute;inset:0;z-index:12;display:none;flex-direction:column;
  background:var(--color-py-bg);
}
.pysheet.on{display:flex}
.py-head{
  flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:13px 15px;
  background:var(--color-py-bar);border-bottom:1px solid var(--color-py-line);color:var(--color-code-fg);
  font-size:14px;font-weight:600;
}
.py-head .x{margin-inline-start:auto;width:30px;height:30px;border:0;border-radius:9px;background:rgba(255,255,255,.07);color:var(--color-code-muted);cursor:pointer;display:grid;place-items:center}
.py-head .x svg{width:15px;height:15px}
.py-body{flex:1;overflow-y:auto;min-height:0}
.py-code{
  direction:ltr;text-align:left;margin:0;padding:13px 15px;
  color:var(--color-code-fg);background:var(--color-py-bg);border-bottom:1px solid var(--color-py-line-soft);
  font-family:"JetBrains Mono",ui-monospace,Menlo,monospace;
  font-size:12px;line-height:1.65;overflow-x:auto;white-space:pre;
}
.py-label{padding:10px 15px 4px;font-size:10px;font-weight:600;letter-spacing:.06em;color:var(--color-py-label);text-transform:uppercase}
.py-out{
  direction:ltr;text-align:left;margin:0;padding:0 15px 12px;
  color:var(--color-py-out);font-family:"JetBrains Mono",ui-monospace,Menlo,monospace;
  font-size:12px;line-height:1.7;white-space:pre-wrap;word-break:break-word;
}
.py-out.err{color:var(--color-py-err)}
.py-fig{margin:0 15px 12px;border-radius:8px;background:var(--color-figure-paper);padding:8px}
.py-fig img{width:100%;height:auto;display:block}
.py-foot{flex:0 0 auto;display:flex;gap:9px;padding:12px 15px;background:var(--color-py-bar);border-top:1px solid var(--color-py-line)}
.py-foot button{flex:1;padding:11px;border-radius:11px;font-family:inherit;font-size:13px;font-weight:600;cursor:pointer}
.py-run{border:0;background:var(--color-success);color:var(--color-text-on-primary)}
.py-run:disabled{background:var(--color-py-line);color:var(--color-py-disabled);cursor:wait}
.py-cancel{border:1px solid var(--color-py-line);background:transparent;color:var(--color-code-muted);flex:0 0 auto;padding-inline:18px}

/* the state the site has no equivalent of: this runs on the phone, not a server */
.py-warn{margin:15px;padding:14px;border-radius:14px;background:var(--color-py-warn-bg);border:1px solid var(--color-py-warn-br)}
.py-warn h5{margin:0 0 6px;font-size:13.5px;font-weight:700;color:var(--color-py-warn-fg);display:flex;align-items:center;gap:7px}
.py-warn h5 svg{width:15px;height:15px}
.py-warn p{margin:0 0 7px;font-size:11.5px;line-height:1.9;color:var(--color-py-warn-body)}
.py-warn ul{margin:0;padding-inline-start:17px;font-size:11.5px;line-height:1.9;color:var(--color-py-warn-body)}
.py-load{display:flex;align-items:center;gap:10px;padding:16px 15px;color:var(--color-code-muted);font-size:12.5px}
.py-load i{width:6px;height:6px;border-radius:50%;background:var(--color-code-run);animation:pulse 1.1s ease-in-out infinite}
.py-load i:nth-child(2){animation-delay:.16s}
.py-load i:nth-child(3){animation-delay:.32s}