:root{--bg:#fff;--sur:#f0f4f9;--sur2:#e3e8ef;--ink:#1f1f1f;--mute:#5f6368;--line:#e1e5ea;--acc:#0b57d0;--u:#e9eef6;--err:#c5221f;--g:linear-gradient(90deg,#4285f4,#9b72cb 55%,#d96570);
box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#131314;--sur:#1e1f20;--sur2:#2a2b2d;--ink:#e3e3e3;--mute:#9aa0a6;--line:#2f3033;--acc:#a8c7fa;--u:#28292a;--err:#f28b82;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#131314;--sur:#1e1f20;--sur2:#2a2b2d;--ink:#e3e3e3;--mute:#9aa0a6;--line:#2f3033;--acc:#a8c7fa;--u:#28292a;--err:#f28b82;color-scheme:dark}
*,*::before,*::after{box-sizing:inherit}
html,body{height:100%;margin:0}
body{display:flex;background:var(--bg);color:var(--ink);font:16px/1.6 "Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden}
button,select,textarea{font:inherit;color:inherit}
button:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
#side{width:288px;flex:none;background:var(--sur);padding:16px 12px;display:flex;flex-direction:column;gap:6px;z-index:20;transition:transform .25s}
.logo{display:flex;align-items:center;gap:10px;padding:4px 8px 14px;font-size:19px}
.ring{--p:0;width:34px;height:34px;border-radius:50%;background:conic-gradient(#d96570 calc(var(--p)*1%),var(--sur2) 0);display:grid;place-items:center}
.ring span{width:26px;height:26px;border-radius:50%;background:var(--sur);display:grid;place-items:center;font-size:14px;color:var(--acc)}
#newchat{border:0;background:var(--sur2);border-radius:999px;padding:11px 16px;text-align:left;cursor:pointer;font-weight:500}
.lbl{font-size:13px;color:var(--mute);padding:14px 10px 4px}
#list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.item{display:flex;align-items:center;border-radius:999px}
.item.on,.item:hover{background:var(--sur2)}
.item>button:first-child{flex:1;min-width:0;border:0;background:none;text-align:left;padding:8px 12px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .x{border:0;background:none;color:var(--mute);cursor:pointer;padding:6px 12px;opacity:0}
.item:hover .x,.item.on .x{opacity:1}
.foot-btn{border:0;background:none;text-align:left;padding:10px 12px;border-radius:999px;cursor:pointer}
.foot-btn:hover{background:var(--sur2)}
#main{flex:1;min-width:0;display:flex;flex-direction:column;height:100%}
header{display:flex;align-items:center;gap:8px;padding:10px 14px}
.icb{display:none;border:0;background:none;font-size:20px;cursor:pointer;padding:6px 10px;border-radius:50%}
.lvl{display:flex;background:var(--sur);border-radius:999px;padding:3px;overflow-x:auto}
.lvl button{border:0;background:none;color:var(--mute);padding:6px 14px;border-radius:999px;cursor:pointer;font-size:14px;white-space:nowrap}
.lvl button.on{background:var(--bg);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.18)}
#chat{flex:1;overflow-y:auto}
#inner{max-width:780px;margin:0 auto;padding:8px 18px 24px}
.hello{padding-top:9vh}
.hello h2{margin:0;font-size:clamp(32px,6vw,54px);line-height:1.15;font-weight:600;background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent}
.hello p{margin:6px 0 28px;font-size:clamp(20px,3.4vw,30px);color:var(--mute);line-height:1.3}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.card{border:0;background:var(--sur);border-radius:16px;padding:14px;min-height:112px;text-align:left;cursor:pointer;display:flex;flex-direction:column;justify-content:space-between;gap:10px}
.card:hover{background:var(--sur2)}
.card small{color:var(--mute);font-size:13px}
.u{display:flex;justify-content:flex-end;margin:18px 0}
.u div{background:var(--u);padding:10px 18px;border-radius:22px 22px 6px 22px;max-width:82%;white-space:pre-wrap;overflow-wrap:anywhere}
.a{display:grid;grid-template-columns:30px 1fr;gap:14px;margin:22px 0}
.av{width:30px;height:30px;border-radius:50%;background:var(--g);color:#fff;display:grid;place-items:center;font-size:14px}
.bd{min-width:0;overflow-wrap:anywhere}
.md p{margin:.3em 0 .7em}.md ul,.md ol{margin:.3em 0 .8em;padding-left:22px}.md li{margin:.25em 0}
.md h4{margin:1em 0 .3em;font-size:17px}
.md pre{background:var(--sur);padding:12px 14px;border-radius:12px;overflow-x:auto;font-size:14px}
.md code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;background:var(--sur);padding:1px 6px;border-radius:6px}
.md pre code{padding:0;background:none}
details{font-size:13.5px;color:var(--mute);margin-bottom:8px;background:var(--sur);border-radius:12px;padding:6px 12px}
summary{cursor:pointer}details ol{margin:6px 0;padding-left:20px}
.srcs{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.srcs a{font-size:13px;color:var(--acc);background:var(--sur);border-radius:999px;padding:3px 12px;text-decoration:none}
.act{display:flex;flex-wrap:wrap;gap:2px;margin-top:6px}
.act button{border:0;background:none;color:var(--mute);padding:4px 10px;border-radius:999px;cursor:pointer;font-size:13.5px}
.act button:hover:not(:disabled){background:var(--sur)}
.sys{text-align:center;color:var(--mute);font-size:13.5px;margin:12px 0}
.dots{display:flex;gap:6px;padding:11px 0}
.dots i{width:9px;height:9px;border-radius:50%;background:var(--g);animation:p 1s infinite}
.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}
@keyframes p{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}
.cw{padding:8px 16px 10px}
#form{max-width:780px;margin:0 auto;background:var(--sur);border-radius:28px;padding:8px 8px 8px 22px;display:flex;align-items:flex-end;gap:8px}
#form:focus-within{box-shadow:0 0 0 2px var(--sur2)}
#input{flex:1;min-width:0;border:0;background:none;resize:none;outline:none;max-height:160px;padding:9px 0;line-height:1.5}
#input::placeholder{color:var(--mute)}
#send{width:42px;height:42px;border:0;border-radius:50%;background:var(--ink);color:var(--bg);font-size:20px;cursor:pointer;flex:none}
#send:disabled{opacity:.35;cursor:not-allowed}
.note{text-align:center;font-size:12px;color:var(--mute);margin:8px 0 0}
#scrim{display:none}
#panel{position:fixed;top:0;right:0;bottom:0;width:min(400px,100%);background:var(--bg);border-left:1px solid var(--line);padding:calc(18px + env(safe-area-inset-top,0px)) 18px calc(18px + env(safe-area-inset-bottom,0px));overflow-y:auto;transform:translateX(100%);transition:transform .25s;z-index:30}
#panel.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.25)}
.ph{display:flex;justify-content:space-between;align-items:center}
h2{margin:0;font-size:24px;font-weight:600}
h3{font-size:14px;margin:22px 0 6px;color:var(--mute);font-weight:600}
.hint{font-size:13px;color:var(--mute);margin:4px 0 8px}
.pill{border:1px solid var(--line);background:none;border-radius:999px;padding:8px 16px;cursor:pointer;font-size:14px}
.pill:hover{background:var(--sur)}
.pill.pri{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.pill:disabled{opacity:.5}
.danger{color:var(--err)}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0}
.grid div{background:var(--sur);border-radius:14px;padding:10px 14px}
.grid b{display:block;font-size:24px;font-weight:600}
.grid small{color:var(--mute)}
.tog{display:flex;gap:10px;align-items:center;font-size:14px;margin:8px 0}
select{background:var(--sur);border:0;border-radius:10px;padding:8px 10px;max-width:100%}
#model{display:block;margin:6px 0 10px;width:100%}
progress{width:100%;height:8px;margin-top:8px}
#diary{list-style:none;margin:0;padding:0;font-size:13.5px;display:flex;flex-direction:column;gap:6px}
#diary li{border-left:3px solid #9b72cb;padding-left:10px;color:var(--mute)}
.row{display:flex;gap:8px;margin-top:20px;flex-wrap:wrap}
@media (max-width:860px){
  #side{position:fixed;top:0;bottom:0;left:0;transform:translateX(-100%);padding-top:calc(16px + env(safe-area-inset-top,0px));padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}
  body.so #side{transform:none;box-shadow:0 0 40px rgba(0,0,0,.3)}
  body.so #scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:15}
  .icb{display:block}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---- v3: markdown ricco, codice, sessione Code ---- */
[hidden]{display:none!important}
.md h3{margin:1.1em 0 .3em;font-size:21px}.md h5{margin:1em 0 .3em;font-size:16px}.md h6{margin:1em 0 .3em;font-size:14px;color:var(--mute)}
.md a{color:var(--acc)}
.md blockquote{margin:.7em 0;padding:2px 14px;border-left:3px solid #9b72cb;color:var(--mute)}
.md hr{border:0;border-top:1px solid var(--line);margin:1.2em 0}
.tw{overflow-x:auto;margin:.7em 0}
.md table{border-collapse:collapse;font-size:14.5px;min-width:60%}
.md th,.md td{padding:8px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.md th{color:var(--mute);font-weight:600;border-bottom-color:var(--sur2)}
.cb{margin:.8em 0 1.1em;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--sur)}
.ch{display:flex;justify-content:space-between;align-items:center;padding:4px 6px 4px 14px;background:var(--sur2);font-size:12.5px;color:var(--mute)}
.ch button{border:0;background:none;color:var(--ink);padding:4px 10px;border-radius:999px;cursor:pointer;font-size:12.5px}
.ch button:hover{background:var(--bg)}
.cb pre{margin:0;border-radius:0;background:none;padding:12px 16px;tab-size:2}
.co{border-top:1px solid var(--line);padding:10px 16px;font:13.5px/1.5 ui-monospace,Menlo,Consolas,monospace;white-space:pre-wrap;color:var(--mute);background:var(--bg)}
.co iframe{display:block;width:100%;height:280px;border:0;border-radius:8px;background:#fff}
body.code #chat,body.code .cw{display:none}
#codeview{flex:1;min-height:0;width:100%;max-width:980px;margin:0 auto;padding:6px 16px 16px;display:flex;flex-direction:column;gap:10px;overflow-y:auto}
.ctl{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
#cprompt{flex:1;min-width:180px}
#cprompt,#goal{border:1px solid var(--line);background:var(--sur);border-radius:999px;padding:9px 16px;color:var(--ink);font:inherit}
#goal{width:100%;margin:6px 0 8px}
#editor{flex:1;min-height:220px;resize:none;background:var(--sur);color:var(--ink);border:1px solid var(--line);border-radius:14px;padding:14px 16px;font:14px/1.6 ui-monospace,Menlo,Consolas,monospace;tab-size:2}
#editor:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
#out{margin:0;max-height:30vh;overflow:auto;background:var(--sur);padding:12px 16px;border-radius:12px;font:13.5px/1.5 ui-monospace,Menlo,Consolas,monospace;white-space:pre-wrap}
#prev{flex:none;height:38vh;border:1px solid var(--line);border-radius:12px;background:#fff}
.lst{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;font-size:14px}
.lst>li{background:var(--sur);border-radius:12px;padding:8px 12px;display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.lst small{color:var(--mute)}.lst pre{overflow-x:auto;font-size:12.5px;max-width:100%}
header{flex-wrap:wrap}
@media (max-width:520px){.lvl button{padding:6px 10px;font-size:13px}}

/* ---- v4: identità visiva "Mare e limone" ---- */
:root{--bg:#F7F9F8;--sur:#EDF2F1;--sur2:#DFE8E6;--ink:#0B2530;--mute:#55696F;--line:#D5E0DE;--acc:#0A6B78;--u:#0B2530;--uink:#F7F9F8;--err:#B3261E;--pop:#F5C84B;--g:linear-gradient(135deg,#F8D571,#F2B93B)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0A1A22;--sur:#10252F;--sur2:#193541;--ink:#E8F1F0;--mute:#8FA6AC;--line:#1F3A46;--acc:#7FD3DD;--u:#F5C84B;--uink:#0B2530;--err:#F28B82}}
:root[data-theme="dark"]{--bg:#0A1A22;--sur:#10252F;--sur2:#193541;--ink:#E8F1F0;--mute:#8FA6AC;--line:#1F3A46;--acc:#7FD3DD;--u:#F5C84B;--uink:#0B2530;--err:#F28B82}
body{font-family:"Bricolage Grotesque",system-ui,-apple-system,"Segoe UI",sans-serif;font-optical-sizing:auto;line-height:1.62}
.logo b{font-size:21px;font-weight:700;letter-spacing:-.03em}
.ring{background:conic-gradient(var(--pop) calc(var(--p)*1%),var(--sur2) 0)}
.ring span{color:var(--ink)}
#newchat{background:var(--ink);color:var(--bg);font-weight:600}
.item.on{background:var(--sur2)}
.lvl button.on{background:var(--ink);color:var(--bg);box-shadow:none}
.hello{padding-top:11vh;animation:in .6s ease-out both}
@keyframes in{from{opacity:0;transform:translateY(10px)}}
.hello h2{background:none;-webkit-text-fill-color:currentColor;color:var(--ink);font-weight:700;letter-spacing:-.04em;font-size:clamp(38px,7.5vw,72px);line-height:1.02}
.hello p{color:var(--mute);font-weight:400;max-width:28ch;margin-bottom:32px}
.card{background:var(--sur);border:1px solid var(--line);border-radius:18px;transition:border-color .15s,background .15s}
.card:hover{background:var(--bg);border-color:var(--ink)}
.card span{font-weight:600}
.u div{background:var(--u);color:var(--uink);border-radius:20px 20px 4px 20px}
.av{background:var(--pop);color:var(--ink);font-weight:700}
.bd{font-size:16.5px}
.dots i{background:var(--pop)}
.dots span{margin-left:6px;align-self:center;color:var(--mute);font-size:14px}
.md a,.srcs a{color:var(--acc)}
.md blockquote,#diary li{border-left-color:var(--pop)}
.srcs a{border:1px solid var(--line);background:none}
#form{background:var(--bg);border:1.5px solid var(--line);box-shadow:0 8px 28px rgba(11,37,48,.08)}
#form:focus-within{border-color:var(--ink);box-shadow:0 8px 28px rgba(11,37,48,.14)}
#send{background:var(--pop);color:var(--ink);font-weight:700}
#send:hover{filter:brightness(.94)}
.pill.pri{background:var(--ink);color:var(--bg)}

/* ---- v5: immagini, voce, login ---- */
#form{padding-left:10px}
.ib{width:40px;height:40px;border:0;border-radius:50%;background:none;cursor:pointer;flex:none;font-size:18px}
.ib:hover{background:var(--sur)}.ib.on{background:var(--pop);animation:p 1s infinite}
#atts{max-width:780px;margin:0 auto 8px;display:flex;gap:8px;flex-wrap:wrap}
.at{position:relative}.at img{width:64px;height:64px;object-fit:cover;border-radius:12px;border:1px solid var(--line);display:block}
.at button{position:absolute;top:-6px;right:-6px;width:22px;height:22px;border:0;border-radius:50%;background:var(--ink);color:var(--bg);cursor:pointer;font-size:11px}
.ut{display:block;max-width:180px;max-height:140px;border-radius:12px;margin-bottom:6px}
.lg{position:fixed;inset:0;z-index:60;background:var(--bg);display:grid;place-items:center;padding:20px}
.lg form{width:min(360px,100%);display:flex;flex-direction:column;gap:10px}
.lg input{border:1px solid var(--line);background:var(--sur);color:var(--ink);border-radius:999px;padding:12px 18px;font:inherit}
.lg .pill{padding:12px 16px}
#vm{position:fixed;inset:0;z-index:50;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding:24px;text-align:center}
#vm>.pill{position:absolute;top:calc(16px + env(safe-area-inset-top,0px));right:16px}
#vmo{width:170px;height:170px;border-radius:50%;background:var(--g);cursor:pointer;box-shadow:0 0 0 0 rgba(245,200,75,.5);animation:orb 2s ease-in-out infinite}
#vmo[data-s=t]{animation:orb 5s linear infinite;opacity:.55;filter:saturate(.6)}
#vmo[data-s=s]{animation:orb .8s ease-in-out infinite}
@keyframes orb{50%{transform:scale(1.1);box-shadow:0 0 0 38px rgba(245,200,75,0)}}
#vms{font-size:22px;font-weight:600;margin:0}#vmt{max-width:560px;min-height:3em}

/* ---- v6.2: laboratorio di auto-sviluppo del progetto ---- */
#devlab{border-top:1px solid var(--line);margin-top:20px;padding-top:4px}
#devlabGoal{display:block;width:100%;margin:6px 0 8px;border:1px solid var(--line);background:var(--sur);border-radius:12px;padding:10px 12px;color:var(--ink);font:inherit}
#devlabProvider{display:block;width:100%;margin:4px 0 10px}
#devlabItems{margin-top:10px}
#devlabItems details{width:100%;max-width:100%;overflow:hidden}
#devlabItems pre{white-space:pre;overflow:auto;max-height:360px;width:100%;max-width:100%;padding:10px;background:var(--bg);border-radius:8px;font:12px/1.5 ui-monospace,Menlo,Consolas,monospace;overflow-wrap:normal}
#devlabItems .row{margin-top:4px}


/* ---- v6.3: coding workspace ---- */
.code-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:10px 2px 4px}
.code-heading h2{font-size:clamp(22px,3vw,30px);letter-spacing:-.035em}
.code-heading p{margin:4px 0;color:var(--mute);font-size:13.5px}
.code-meta{display:flex;flex-direction:column;align-items:flex-end;gap:3px;font-size:12px;color:var(--mute);white-space:nowrap}
.code-meta #codestate{color:var(--acc);font-weight:600}
.code-create{padding:4px 0}
#template{max-width:175px}
#codeview{max-width:1240px;gap:10px}
.code-toolbar{display:flex;gap:7px;align-items:center;flex-wrap:wrap}
.code-toolbar .pill{padding:7px 12px;font-size:13px}
.code-workspace{display:flex;flex:1;min-height:250px}
#editor{width:100%;min-height:300px;resize:vertical;line-height:1.65;white-space:pre;overflow:auto;tab-size:2;caret-color:var(--acc);border-radius:16px;background:var(--sur);box-shadow:inset 0 1px 0 rgba(255,255,255,.25)}
#out{max-height:28vh;white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid var(--line)}
#prev{width:100%;height:42vh;min-height:250px}
.code-safety{font-size:12px;line-height:1.5;color:var(--mute);margin:0 2px 6px}
@media(max-width:720px){.code-heading{flex-direction:column;gap:4px}.code-meta{align-items:flex-start}.code-create{align-items:stretch}.code-create select,.code-create input{max-width:none;width:100%}.code-toolbar .pill{flex:1 1 auto}#editor{min-height:44vh;font-size:13px}}