:root{--bg:#F6F7F4;--panel:#FFFFFF;--side:#0B2F29;--side2:#123E36;--side-ink:#D9EEE7;--ink:#14211D;--muted:#5B6A63;--line:#E1E7E2;--accent:#0E6B5C;--mint:#A3F4D7;--user:#E7F4EF;--code:#0F1E1A;--danger:#A2421B;
  --font:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Noto Sans Bengali","Nirmala UI",sans-serif;--mono:ui-monospace,"Cascadia Code",Consolas,monospace}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0E1513;--panel:#141D1A;--ink:#E4EEEA;--muted:#9AB0A8;--line:#24322E;--user:#1B2B27;--code:#0A110F}}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--font)}
button{font:inherit;cursor:pointer}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
[hidden]{display:none!important}

.shell{display:flex;height:100dvh;overflow:hidden}
.side{width:280px;flex:none;display:flex;flex-direction:column;gap:10px;padding:14px 12px;background:var(--side);color:var(--side-ink)}
.side-top{display:flex;align-items:center;justify-content:space-between;padding:2px 4px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}.brand b{font-size:18px;letter-spacing:-.01em}
.mark{width:30px;height:30px;border-radius:9px;background:var(--mint);color:#0B2F29;display:grid;place-items:center}.mark svg{width:17px;height:17px;stroke-width:2.8}
.mark.big{width:56px;height:56px;border-radius:16px}.mark.big svg{width:30px;height:30px}
.new-chat{display:flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border-radius:12px;border:1px solid #2C5B51;background:var(--side2);color:#fff;font-weight:600}
.new-chat:hover{border-color:var(--mint)}
.search{display:flex;align-items:center;gap:8px;padding:0 12px;border-radius:10px;background:#0F3A33;color:#8DB5A9}
.search input{flex:1;min-width:0;min-height:38px;border:0;background:transparent;color:#fff;font:inherit;font-size:14px}.search input:focus{outline:none}
.chat-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px;margin:0 -4px;padding:0 4px}
.chat-list h3{margin:12px 8px 4px;font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:#7FA79B}
.chat-item{display:flex;align-items:center;gap:6px;border-radius:10px}
.chat-item a{flex:1;min-width:0;padding:9px 10px;color:var(--side-ink);text-decoration:none;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-radius:10px}
.chat-item.on,.chat-item:hover{background:var(--side2)}.chat-item.on a{color:#fff}
.chat-item button{opacity:0;border:0;background:none;color:#8DB5A9;padding:6px;border-radius:8px}.chat-item:hover button,.chat-item.on button{opacity:1}.chat-item button:hover{color:#fff;background:#1C5146}
.side-foot{border-top:1px solid #1F4A41;padding-top:10px;font-size:13px}
.usage{display:flex;flex-direction:column;gap:6px}.meter{height:6px;border-radius:9px;background:#1C4A41;overflow:hidden}.meter i{display:block;height:100%;background:var(--mint)}
.note{margin:8px 0 0;color:#7FA79B;font-size:12px}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:10px;min-height:56px;padding:0 18px;border-bottom:1px solid var(--line);background:var(--panel)}
.title{flex:1;margin:0;font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.model{font-size:12px;font-weight:600;color:var(--accent);background:var(--user);padding:4px 10px;border-radius:99px}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;border:0;background:transparent;color:inherit}
.icon-btn:hover{background:rgba(14,107,92,.1)}
.only-mobile{display:none}

.thread{flex:1;overflow-y:auto;padding:24px 18px 8px;scroll-behavior:smooth}
.welcome{max-width:720px;margin:8vh auto 0;display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px}
.welcome h2{margin:8px 0 0;font-size:30px;letter-spacing:-.02em}.welcome p{margin:0;color:var(--muted)}
.ideas{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;width:100%;margin-top:18px}
.ideas button{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--panel);color:var(--ink);text-align:left;font-size:14px}
.ideas button:hover{border-color:var(--accent)}

.msg{max-width:780px;margin:0 auto 22px;display:flex;gap:12px}
.msg.user{justify-content:flex-end}
.msg.user>div{max-width:85%;display:flex;flex-direction:column;align-items:flex-end}
.msg.user .body{background:var(--user);padding:10px 16px;border-radius:18px 18px 4px 18px;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.bot .avatar{flex:none;width:30px;height:30px;border-radius:9px;background:var(--side);color:var(--mint);display:grid;place-items:center;margin-top:2px}.msg.bot .avatar svg{width:16px;height:16px;stroke-width:2.8}
.msg.bot .body{flex:1;min-width:0;overflow-wrap:anywhere}
.body>:first-child{margin-top:0}.body>:last-child{margin-bottom:0}
.body p{margin:0 0 12px}.body ul,.body ol{margin:0 0 12px;padding-left:24px}.body li{margin:3px 0}
.body h1,.body h2,.body h3{margin:18px 0 8px;line-height:1.3}.body h1{font-size:22px}.body h2{font-size:19px}.body h3{font-size:17px}
.body code{font-family:var(--mono);font-size:.9em;background:rgba(14,107,92,.1);padding:1px 5px;border-radius:5px}
.body blockquote{margin:0 0 12px;padding:2px 14px;border-left:3px solid var(--accent);color:var(--muted)}
.body table{border-collapse:collapse;margin:0 0 12px;display:block;overflow-x:auto}.body th,.body td{border:1px solid var(--line);padding:6px 10px;text-align:left}
.body a{color:var(--accent)}
.codeblock{margin:0 0 14px;border-radius:12px;overflow:hidden;background:var(--code);color:#E6F2EE}
.codeblock .bar{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;font-size:12px;color:#93B3A9;background:#132A25}
.codeblock .bar button{border:0;background:none;color:#B7D6CC;font-size:12px;padding:2px 6px;border-radius:6px}.codeblock .bar button:hover{background:#1E3F38;color:#fff}
.codeblock pre{margin:0;padding:14px;overflow-x:auto}.codeblock code{background:none;padding:0;font-size:13.5px;color:inherit}
.attach-chips{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end;margin-bottom:6px}
.attach-chips img{width:84px;height:84px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;background:var(--panel);border:1px solid var(--line);font-size:13px}
.cursor::after{content:"";display:inline-block;width:8px;height:16px;margin-left:2px;vertical-align:-2px;background:var(--accent);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.thinking{display:inline-flex;gap:5px;padding:8px 0}.thinking i{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:bounce 1.2s infinite}.thinking i:nth-child(2){animation-delay:.15s}.thinking i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.4}40%{transform:translateY(-5px);opacity:1}}
.actions{display:flex;gap:4px;margin-top:6px;opacity:.7}.actions button{border:0;background:none;color:var(--muted);font-size:13px;padding:4px 8px;border-radius:8px}.actions button:hover{background:rgba(14,107,92,.1);color:var(--ink)}
.err{margin-top:8px;padding:10px 14px;border-radius:12px;background:#FCEEE6;color:var(--danger);font-size:14px}

.composer{padding:8px 18px 14px;background:linear-gradient(transparent,var(--bg) 30%)}
.composer .files{max-width:780px;margin:0 auto 8px;display:flex;flex-wrap:wrap;gap:8px}
.file-chip{position:relative;display:flex;align-items:center;gap:8px;padding:6px 30px 6px 6px;border-radius:12px;background:var(--panel);border:1px solid var(--line);font-size:13px;max-width:240px}
.file-chip img{width:40px;height:40px;object-fit:cover;border-radius:8px}.file-chip .pdf{width:40px;height:40px;border-radius:8px;background:#C2410C;color:#fff;display:grid;place-items:center;font-size:11px;font-weight:700}
.file-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-chip button{position:absolute;top:4px;right:4px;width:22px;height:22px;border:0;border-radius:50%;background:var(--line);color:var(--ink);font-size:12px;line-height:22px;padding:0}
.box{max-width:780px;margin:0 auto;display:flex;align-items:flex-end;gap:6px;padding:8px;border-radius:22px;background:var(--panel);border:1px solid var(--line);box-shadow:0 6px 24px rgba(11,47,41,.08)}
.box.over{border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,107,92,.2)}
.box:focus-within{border-color:#9CC7BA}
.attach{color:var(--muted)}.attach input{position:absolute;width:1px;height:1px;opacity:0}
textarea{flex:1;min-width:0;max-height:220px;padding:9px 4px;border:0;background:transparent;color:var(--ink);font:inherit;resize:none;line-height:1.5}textarea:focus{outline:none}
.send{flex:none;width:40px;height:40px;border-radius:12px;border:0;background:var(--side);color:var(--mint);display:grid;place-items:center}
.send:disabled{background:var(--line);color:var(--muted);cursor:default}.send.stop{background:var(--ink);color:var(--bg)}.send.stop svg{fill:currentColor;stroke:none}
.fine{max-width:780px;margin:8px auto 0;text-align:center;font-size:12px;color:var(--muted)}

@media(max-width:820px),(pointer:coarse) and (max-width:1100px){
  .side{position:fixed;inset:0 auto 0 0;z-index:20;transform:translateX(-100%);transition:transform .2s ease;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .shell.side-open .side{transform:none}
  .only-mobile{display:inline-grid}
  .thread{padding:16px 12px 6px}.composer{padding:6px 10px 10px}
  .welcome h2{font-size:24px}.msg.user>div{max-width:92%}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.note a{color:#9CC7BA}

.memory-btn{display:flex;align-items:center;gap:8px;width:100%;margin-bottom:8px;padding:8px 10px;border:0;border-radius:10px;background:transparent;color:var(--side-ink);font-size:14px}.memory-btn:hover{background:var(--side2)}.memory-btn svg{width:18px;height:18px}
.memory{border:0;border-radius:18px;padding:0;width:min(560px,94vw);background:var(--panel);color:var(--ink);box-shadow:0 24px 70px rgba(0,0,0,.35)}.memory::backdrop{background:rgba(5,20,17,.55)}
.memory-card{display:flex;flex-direction:column;gap:12px;padding:22px}.memory-card h2{margin:0;font-size:20px}.hint{margin:0;color:var(--muted);font-size:14px}
.switch{display:flex;align-items:center;gap:10px;font-weight:600}.switch input{width:20px;height:20px;accent-color:var(--accent)}
.memory-card textarea{width:100%;padding:12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-size:14px;resize:vertical;max-height:none}
.memory-actions{display:flex;gap:8px;align-items:center}.memory-actions span{flex:1}
.memory-actions button{min-height:40px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--ink);font-weight:600}
.memory-actions .primary{background:var(--side);color:var(--mint);border-color:var(--side)}.memory-actions .danger{color:var(--danger);border-color:transparent}
.account{margin-bottom:6px}
.google-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:9px 10px;border:1px solid var(--side2);border-radius:10px;color:var(--side-ink);font-size:14px;font-weight:600;text-decoration:none}.google-btn:hover{background:var(--side2)}.google-btn svg{width:18px;height:18px;fill:currentColor}
.who{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 10px;font-size:14px;color:var(--side-ink)}.who span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.who button{border:0;background:transparent;color:inherit;opacity:.7;font-size:13px;text-decoration:underline;cursor:pointer}
.human{position:fixed;inset:auto 0 24px;display:flex;flex-direction:column;align-items:center;gap:8px;z-index:50;pointer-events:none}.human>*{pointer-events:auto}.human p{margin:0;padding:6px 12px;border-radius:8px;background:var(--side2);color:var(--side-ink);font-size:14px}
.signin-ask .memory-card{display:flex;flex-direction:column;gap:12px;text-align:center}.signin-ask h2{margin:0}.signin-ask p{margin:0;line-height:1.55}
.google-btn.big{padding:12px 16px;font-size:15px;background:var(--side2)}.link-btn{border:0;background:transparent;color:inherit;opacity:.7;text-decoration:underline;cursor:pointer;font-size:14px}
.signin-ask .google-btn{color:var(--ink);border-color:var(--line)}
.searching{display:inline-block;color:var(--muted);font-size:14px;animation:pulse-text 1.4s ease-in-out infinite}@keyframes pulse-text{50%{opacity:.45}}
.sources{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:12px;font-size:13px}.sources b{margin-right:4px;color:var(--muted);font-weight:600}
.sources a{max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:4px 10px;border:1px solid var(--line);border-radius:999px;color:inherit;text-decoration:none}.sources a:hover{border-color:var(--muted)}
.search-chip{display:block;width:100%;height:64px;margin-top:8px;border:0;border-radius:12px;background:transparent}
body.text-only .attach,body.text-only .idea-file,body.text-only .files-hint{display:none}

/* Chosen theme (Settings → Theme) wins over the device's. */
:root[data-theme=dark]{--bg:#0E1513;--panel:#141D1A;--ink:#E4EEEA;--muted:#9AB0A8;--line:#24322E;--user:#1B2B27;--code:#0A110F;color-scheme:dark}
:root[data-theme=light]{color-scheme:light}

/* Account button and menu at the foot of the side bar (like ChatGPT). */
.acct-wrap{position:relative}
.acct-btn{display:flex;align-items:center;gap:10px;width:100%;padding:8px;border:0;border-radius:12px;background:transparent;color:var(--side-ink);text-align:left}
.acct-btn:hover,.acct-btn[aria-expanded=true]{background:var(--side2)}
.avatar{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--mint);color:#0B2F29;font-weight:700;font-size:13px}
.acct-text{display:grid;min-width:0;line-height:1.25;flex:1}.acct-text b{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#fff}.acct-text span{font-size:12px;opacity:.75}
.upgrade-pill{flex:none;padding:4px 10px;border-radius:999px;background:#fff;color:#0B2F29;font-size:12px;font-weight:700}
.acct-menu{position:absolute;left:0;right:0;bottom:calc(100% + 8px);z-index:30;padding:8px;border-radius:16px;background:var(--panel);color:var(--ink);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.35)}
.acct-head{display:flex;gap:10px;align-items:center;padding:8px 8px 10px;border-bottom:1px solid var(--line);margin-bottom:6px}.acct-head div{display:grid;line-height:1.3;min-width:0}.acct-head b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.acct-head span{font-size:12.5px;color:var(--muted)}
.acct-menu button{display:flex;align-items:center;gap:12px;width:100%;padding:9px 10px;border:0;border-radius:10px;background:transparent;color:inherit;font-size:14.5px;text-align:left}
.acct-menu button:hover{background:var(--user)}.acct-menu button svg{width:18px;height:18px;opacity:.8}
.acct-menu hr{border:0;border-top:1px solid var(--line);margin:6px 0}

/* Dialog contents */
.field{display:grid;gap:6px;font-size:14px;font-weight:600}
.field textarea,.field select{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-size:14px;font-weight:400}
.facts{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;margin:0}.facts dt{color:var(--muted);font-size:14px}.facts dd{margin:0;font-weight:600;word-break:break-word}
.danger-zone{display:grid;grid-template-columns:1fr auto;gap:12px 16px;align-items:center;padding-top:8px;border-top:1px solid var(--line)}.danger-zone p{margin:2px 0 0}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.plan{padding:14px;border:1px solid var(--line);border-radius:14px}.plan.best{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.plan h3{margin:0;font-size:16px}.price{margin:4px 0 8px;font-size:24px;font-weight:800}.price span{font-size:13px;font-weight:500;color:var(--muted)}
.plan ul{margin:0;padding-left:18px;font-size:13.5px;line-height:1.6}
details{border:1px solid var(--line);border-radius:12px;padding:10px 12px}details summary{cursor:pointer;font-weight:600}details p{margin:8px 0 0;font-size:14px}
.danger-zone .danger{padding:8px 14px;border-radius:10px;border:1px solid var(--danger);background:transparent;color:var(--danger);font-weight:600}

/* Upgrade and pay */
.pay-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.period{display:flex;gap:4px;padding:4px;border-radius:999px;background:var(--user)}.period button{border:0;border-radius:999px;padding:6px 12px;background:transparent;color:var(--ink);font-size:13px}.period button.on{background:var(--panel);box-shadow:0 1px 3px rgba(0,0,0,.15);font-weight:600}
.plan{display:flex;flex-direction:column}.plan ul{flex:1}.plan .choose{margin-top:10px;padding:9px 12px;border-radius:10px;border:0;background:var(--side);color:var(--mint);font-weight:700}
.plan-state{margin:8px 0 0;font-weight:600;color:var(--accent)}
.pay-history{margin-top:14px}.pay-history h3{font-size:14px;margin:0 0 6px}.pay-row{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;padding:8px 0;border-top:1px solid var(--line);font-size:13.5px}
.pill{padding:2px 9px;border-radius:999px;font-size:12px;border:1px solid var(--line)}.pill.approved{color:#0E6B5C;border-color:#0E6B5C}.pill.rejected{color:var(--danger);border-color:var(--danger)}.pill.pending{color:#9A6B00;border-color:#C99A2E}
.pay-grid{display:grid;grid-template-columns:200px 1fr;gap:16px;align-items:center}
.qr{width:200px;height:200px;padding:8px;border-radius:14px;background:#fff}.qr svg{width:100%;height:100%;display:block}
.pay-steps{margin:0;padding-left:20px;font-size:14px;line-height:1.6}
.field input{width:100%;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-size:16px;letter-spacing:.04em}
@media(max-width:560px){.pay-grid{grid-template-columns:1fr;justify-items:center}}
.pay-steps a{color:inherit;font-weight:700;text-decoration:underline}
/* New chat: welcome and the message box together in the middle of the screen (like ChatGPT);
   once the chat has messages the box goes back to the bottom. */
.main.is-empty .thread{flex:0 0 auto;margin-top:auto;overflow:visible;padding-bottom:0}
.main.is-empty .welcome{margin-top:0}
.main.is-empty .composer{margin-bottom:auto;background:none;padding-top:18px}
@media(max-width:760px){.main.is-empty .welcome h2{font-size:24px}.main.is-empty .ideas{grid-template-columns:1fr 1fr;margin-top:12px}.main.is-empty .ideas button{padding:10px 12px;font-size:13px}}
.qr svg{stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;shape-rendering:crispEdges}   /* QR modules must stay square: undo the icon stroke style */

.renew{display:flex;align-items:center;gap:10px;margin:10px auto 0;max-width:780px;width:calc(100% - 24px);padding:10px 14px;border-radius:12px;background:#FFF4D6;color:#5A4300;font-size:14px}
.renew span{flex:1}.renew button{border:0;border-radius:9px;padding:6px 12px;background:#5A4300;color:#fff;font-weight:700}.renew .x{background:transparent;color:inherit;padding:4px 6px}
/* New chat: the message box glows with a turning rainbow ring that breathes
   (owner, 25 Oct 2026), like the "Ask Hexovra AI" button on hexovra.in. */
@property --hx-a{syntax:"<angle>";initial-value:0deg;inherits:false}
.main.is-empty .box{border:2px solid transparent;
  background:linear-gradient(var(--panel),var(--panel)) padding-box,conic-gradient(from var(--hx-a),#A3F4D7,#6EE7F9,#A78BFA,#F472B6,#FBBF24,#A3F4D7) border-box;
  animation:hx-ring 9s linear infinite,hx-glow 6s ease-in-out infinite}
@keyframes hx-ring{to{--hx-a:360deg}}
@keyframes hx-glow{
  0%,100%{box-shadow:0 0 6px rgba(163,244,215,.25),0 0 0 rgba(167,139,250,0)}
  25%{box-shadow:0 0 22px rgba(110,231,249,.55),0 0 40px rgba(167,139,250,.25)}
  50%{box-shadow:0 0 10px rgba(244,114,182,.35),0 0 0 rgba(167,139,250,0)}
  75%{box-shadow:0 0 24px rgba(251,191,36,.5),0 0 42px rgba(163,244,215,.25)}}
@media(prefers-reduced-motion:reduce){.main.is-empty .box{animation:none}}

.signin-card .google-btn{justify-content:center}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}.or::before,.or::after{content:"";flex:1;border-top:1px solid var(--line)}
.field input{width:100%}.primary.wide{width:100%;padding:11px;border-radius:12px;border:0;background:var(--side);color:var(--mint);font-weight:700;font-size:15px;margin-top:6px}
#em-step1,#em-step2{display:grid;gap:10px}

.codeblock .bar [data-preview]{margin-left:auto;margin-right:6px;border:0;border-radius:8px;padding:3px 10px;background:var(--mint);color:#0B2F29;font-weight:700;font-size:12px}
.codeblock .bar [data-preview]+[data-copy]{margin-left:0}
.preview{width:min(1100px,96vw);height:min(820px,90dvh);padding:0;border:0;border-radius:16px;overflow:hidden;background:var(--panel);color:var(--ink);box-shadow:0 24px 70px rgba(0,0,0,.4)}
.preview[open]{display:flex;flex-direction:column}.preview::backdrop{background:rgba(5,20,17,.6)}
.preview-bar{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line)}.preview-bar span:nth-child(3){flex:1}
.preview-bar .plain{border:1px solid var(--line);border-radius:9px;padding:5px 12px;background:transparent;color:inherit}
.preview iframe{flex:1;width:100%;border:0;background:#fff}

/* Model picker */
.model-pick{position:relative;align-self:center}
.model-btn{border:1px solid var(--line);border-radius:999px;padding:5px 11px;background:transparent;color:var(--muted);font-size:13px;font-weight:600;white-space:nowrap}
.model-btn:hover{color:var(--ink);border-color:var(--muted)}
.model-menu{position:absolute;right:0;bottom:calc(100% + 8px);z-index:40;width:280px;padding:6px;border-radius:14px;background:var(--panel);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.3)}
.model-menu button{display:grid;gap:2px;width:100%;padding:9px 10px;border:0;border-radius:10px;background:transparent;color:var(--ink);text-align:left}
.model-menu button:hover{background:var(--user)}.model-menu .locked{opacity:.6}
.m-top{display:flex;gap:8px;align-items:center}.m-top i{font-style:normal;color:var(--accent)}.m-top em{margin-left:auto;font-style:normal;font-size:12px;color:var(--muted)}
.m-sub{font-size:12.5px;color:var(--muted)}
/* Usage page */
.ubar{display:grid;gap:6px;padding:12px 14px;border:1px solid var(--line);border-radius:14px}
.ubar-top{display:flex;justify-content:space-between}.ubar-top span{color:var(--muted)}
.ubar-track{height:8px;border-radius:99px;background:var(--user);overflow:hidden}.ubar-track i{display:block;height:100%;border-radius:99px;background:#3B82F6}
.ubar .hint{margin:0}.ucounts{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14px}
/* Extra usage packs */
.packs{margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.packs h3{margin:0;font-size:15px}.packs .hint{margin:4px 0 10px}
.pack-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pack{display:grid;gap:2px;padding:12px;border:1px solid var(--line);border-radius:14px;background:transparent;color:var(--ink);text-align:left}.pack:hover{border-color:var(--accent)}
.pack b{font-size:20px}.pack small{color:var(--muted)}
@media(max-width:560px){.model-btn{padding:4px 8px;font-size:12px}}

/* Voice typing */
.mic-wrap{display:flex;align-items:center;gap:2px;align-self:center}
.mic{display:grid;place-items:center;width:34px;height:34px;border:0;border-radius:50%;background:transparent;color:var(--muted)}
.mic:hover{color:var(--ink);background:var(--user)}
.mic.on{color:#fff;background:#E5484D;animation:mic-pulse 1.4s ease-in-out infinite}
@keyframes mic-pulse{0%,100%{box-shadow:0 0 0 0 rgba(229,72,77,.5)}50%{box-shadow:0 0 0 8px rgba(229,72,77,0)}}
.mic-lang{border:0;background:transparent;color:var(--muted);font-size:12px;font-weight:700;padding:2px 4px;border-radius:6px}.mic-lang:hover{color:var(--ink)}

/* Canvas beside the chat */
body.with-canvas .main{flex:1 1 46%}
.canvas{flex:1 1 54%;min-width:0;display:flex;flex-direction:column;border-left:1px solid var(--line);background:var(--panel)}
.cv-bar{display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.cv-tabs{display:flex;gap:4px;flex:1;min-width:0;overflow-x:auto}
.cv-tabs button{border:1px solid var(--line);border-radius:9px;padding:5px 10px;background:transparent;color:var(--muted);font-size:13px;white-space:nowrap}
.cv-tabs button.on{color:var(--ink);border-color:var(--accent);font-weight:600}
.cv-btn,#cv-version{border:1px solid var(--line);border-radius:9px;padding:5px 10px;background:transparent;color:var(--ink);font-size:13px}
.cv-btn[aria-pressed=true]{background:var(--user)}.cv-btn.x{border:0}
.cv-error{display:flex;gap:10px;align-items:center;padding:8px 12px;background:#FCEEE6;color:#7A2E12;font-size:13.5px}.cv-error span{flex:1}
.cv-error button{border:0;border-radius:9px;padding:6px 12px;background:#7A2E12;color:#fff;font-weight:700}
.cv-body{flex:1;min-height:0;display:flex}
.cv-text{flex:1;overflow:auto;padding:10px 0;font:13.5px/1.6 var(--mono);white-space:pre-wrap}
.cv-text .ln{display:flex;gap:12px;padding:0 14px}.cv-text .no{flex:none;width:34px;text-align:right;color:var(--muted);user-select:none}
.cv-text .tx{flex:1;min-width:0;word-break:break-word}
.cv-text .add{background:rgba(46,160,67,.16)}.cv-text .del{background:rgba(229,72,77,.14);text-decoration:line-through;opacity:.8}
.cv-editor{flex:1;border:0;padding:14px;background:var(--bg);color:var(--ink);font:13.5px/1.6 var(--mono);resize:none}
.cv-frame{flex:1;border:0;background:#fff}
.cv-foot{padding:6px 12px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.doc-card{display:flex;gap:10px;align-items:center;margin:8px 0;padding:10px 14px;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--ink);text-align:left;cursor:pointer}
.doc-card:hover{border-color:var(--accent)}.doc-card span:first-child{font-size:20px}.doc-card b{display:block}.doc-card small{color:var(--muted)}
#preview-error{color:#E5484D;font-size:13px}
/* Phones: the canvas covers the chat; ✕ goes back */
@media(max-width:900px){body.with-canvas .main{display:none}.canvas{border-left:0}}
/* Phones (like ChatGPT): the text gets the whole first row; the tools sit in a row under it. */
@media(max-width:640px){
  .box{flex-wrap:wrap;align-items:center;row-gap:4px;padding:8px 8px 6px}
  .box #input{order:-1;flex:1 0 100%;min-height:40px;padding:6px 6px 2px}
  .box .mic-wrap{margin-left:auto}
  .box .attach,.box .mic,.box .send{width:36px;height:36px}
}

/* Canvas: hand edits fill the panel; download menu */
.cv-editor{max-height:none;height:auto;align-self:stretch;padding:14px 16px}
.cv-dl{position:relative}
.cv-dl-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:30;min-width:190px;padding:6px;border-radius:12px;background:var(--panel);border:1px solid var(--line);box-shadow:0 14px 40px rgba(0,0,0,.3)}
.cv-dl-menu button{display:block;width:100%;padding:8px 10px;border:0;border-radius:8px;background:transparent;color:var(--ink);text-align:left;font-size:14px}.cv-dl-menu button:hover{background:var(--user)}
.cv-btn.cv-clean{background:var(--side);color:var(--mint);border-color:var(--side);font-weight:700}
/* Native drop-downs (version list, theme, language) follow the theme: dark list in dark mode. */
:root{color-scheme:light}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark}}
:root[data-theme=dark]{color-scheme:dark}
select option{background:var(--panel);color:var(--ink)}
#cv-version{background:var(--panel);color:var(--ink);font-weight:600}

/* Canvas clean view: the document as a page */
.cv-text.paper{padding:24px 16px;background:var(--bg);white-space:normal;font-family:var(--font)}
.cv-text.paper .doc{max-width:800px;margin:0 auto;padding:40px 48px;background:#fff;color:#111;border-radius:6px;box-shadow:0 4px 24px rgba(0,0,0,.18);font-size:15px;line-height:1.7}
.cv-text.paper .doc h1{font-size:24px;margin:0 0 12px}.cv-text.paper .doc h2{font-size:19px;margin:18px 0 8px}.cv-text.paper .doc h3{font-size:16px;margin:14px 0 6px}
.cv-text.paper .doc p{margin:0 0 10px}.cv-text.paper .doc table{width:100%;border-collapse:collapse;margin:8px 0 14px}
.cv-text.paper .doc th,.cv-text.paper .doc td{border:1px solid #bbb;padding:6px 9px;text-align:left}.cv-text.paper .doc th{background:#eef2f0}
.cv-text.paper .doc .codeblock .bar{display:none}
@media(max-width:640px){.cv-text.paper .doc{padding:22px 18px}}

/* The microphone language belongs to the microphone */
.mic-wrap{position:relative;border:1px solid var(--line);border-radius:999px;padding:0 2px 0 6px}
.mic-tip{position:absolute;right:0;bottom:calc(100% + 10px);z-index:40;width:250px;padding:10px 12px;border-radius:12px;background:var(--side);color:#fff;font-size:13px;line-height:1.45;box-shadow:0 10px 30px rgba(0,0,0,.3)}

/* Search inside messages */
.search-hits{max-height:45vh;overflow:auto;display:grid;gap:2px;padding-bottom:6px;border-bottom:1px solid #1F4A42}
.search-hits h3{margin:4px 6px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#8DB5A9}
.search-hits a{display:grid;gap:2px;padding:7px 8px;border-radius:9px;color:var(--side-ink);text-decoration:none;font-size:13.5px}
.search-hits a:hover{background:var(--side2)}.search-hits small{color:#9CC4B8;font-size:12px;line-height:1.4}
.search-hits mark{background:#A3F4D7;color:#0B2F29;border-radius:3px;padding:0 2px}
.search-hits .hint{margin:4px 8px;color:#8DB5A9;font-size:13px}

.share-btn{margin-left:auto;border:1px solid var(--line);border-radius:999px;padding:4px 12px;background:transparent;color:var(--ink);font-size:13px;font-weight:600}
.share-btn+.model{margin-left:8px}
.share-row{display:flex;gap:8px}.share-row input{flex:1;min-width:0;padding:9px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-size:13px}
.file-chip .edit-pdf{border:1px solid var(--accent);border-radius:8px;padding:2px 8px;background:transparent;color:var(--accent);font-size:12px;font-weight:700;white-space:nowrap}

/* Diagrams and charts */
.diagram{margin:10px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.diagram-frame{display:block;width:100%;height:120px;border:0;background:#fff}
.diagram-wait{display:block;padding:14px;color:#667;font-size:13px}
.cv-btn.cv-publish{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:700}

.tool-card{display:flex;gap:10px;align-items:center;margin:8px 0;padding:10px 14px;border:1px solid var(--accent);border-radius:14px;background:var(--panel);color:var(--ink);text-align:left;cursor:pointer}
.tool-card:hover{background:var(--user)}.tool-card span:first-child{font-size:20px}.tool-card b{display:block}.tool-card small{color:var(--muted)}.tool-card:disabled{opacity:.6;cursor:wait}