:root{
  --hd:#0f3d36; --hd-2:#14524a; --acc:#1aa36f; --acc-d:#128a5c;
  --bg:#ece5dd; --me:#d9fdd3; --ai:#fff; --ink:#111b21; --muted:#667781; --line:#e2ddd5;
  --warn:#fff4d6; --warn-line:#efd48a; --danger:#c0392b;
  --radius:10px; --sh:0 1px .5px rgba(11,20,26,.13);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body,#app{height:100%}
body{overflow:hidden}
body{font-family:var(--font);color:var(--ink);background:#d1d7db;-webkit-font-smoothing:antialiased;font-size:15.5px}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font:inherit;color:inherit}
a{color:#027eb5}
svg{display:block}
.booting{display:grid;place-items:center;height:100%}
.hide{display:none!important}

/* ---------- login */
.login{height:100%;overflow:auto;display:grid;place-items:center;padding:24px;background:linear-gradient(180deg,var(--hd) 0 220px,#e9edef 220px)}
.login-card{width:100%;max-width:380px;background:#fff;border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.15);padding:32px 28px}
.logo{display:flex;align-items:center;gap:10px;margin-bottom:22px}
.logo i{width:42px;height:42px;border-radius:12px;background:var(--hd);display:grid;place-items:center}
.logo i svg{width:24px;height:24px;fill:#fff}
.logo b{font-size:1.2rem}
.login h1{font-size:1.35rem;margin-bottom:6px}
.login p{color:var(--muted);font-size:.95rem;margin-bottom:20px}
.login label{display:block;font-size:.85rem;font-weight:600;margin:14px 0 6px}
.login input{width:100%;padding:13px 14px;border:1px solid #cfd6da;border-radius:10px;font-size:1rem;background:#fafbfb}
.login input:focus{outline:2px solid var(--acc);outline-offset:-1px;background:#fff}
.login .go{width:100%;margin-top:22px;background:var(--acc);color:#fff;font-weight:600;padding:14px;border-radius:10px;font-size:1rem}
.login .go:hover{background:var(--acc-d)}
.login .go:disabled{opacity:.6}
.login .err{color:var(--danger);font-size:.9rem;margin-top:12px;min-height:1.2em}

/* ---------- layout */
.shell{height:100%;height:100dvh;display:grid;grid-template-columns:minmax(0,1fr);max-width:1500px;margin:0 auto;background:#fff}
@media(min-width:1000px){
  .shell{height:calc(100dvh - 36px);margin:18px auto;width:calc(100% - 36px);grid-template-columns:minmax(380px,520px) 1fr;border-radius:8px;overflow:hidden;box-shadow:0 6px 30px rgba(0,0,0,.12)}
}
.chat{display:flex;flex-direction:column;height:100%;min-height:0;background:var(--bg);position:relative}

/* header */
.top{display:flex;align-items:center;gap:12px;background:var(--hd);color:#fff;padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top));min-height:62px}
.av{width:40px;height:40px;border-radius:50%;background:#fff;color:var(--hd);display:grid;place-items:center;font-weight:700;font-size:.95rem;flex:none}
.top .who{flex:1;min-width:0}
.top .who b{display:block;font-size:1.02rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top .who small{font-size:.8rem;opacity:.8}
.ibtn{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none}
.ibtn:hover{background:rgba(255,255,255,.12)}
.ibtn svg{width:22px;height:22px;fill:currentColor}
.menu{position:absolute;top:58px;right:10px;background:#fff;color:var(--ink);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.18);padding:6px 0;z-index:30;min-width:200px}
.menu a,.menu button{display:block;width:100%;text-align:left;padding:11px 16px;text-decoration:none;color:var(--ink);font-size:.95rem}
.menu a:hover,.menu button:hover{background:#f2f2f2}

/* bozza */
.draft{background:var(--warn);border-bottom:1px solid var(--warn-line);padding:10px 14px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.draft .txt{flex:1;min-width:180px;font-size:.88rem;line-height:1.35}
.draft .txt b{display:block;font-size:.92rem}
.draft .acts{display:flex;gap:6px}
.pill{padding:8px 14px;border-radius:999px;font-weight:600;font-size:.88rem;white-space:nowrap}
.pill.ok{background:var(--acc);color:#fff}
.pill.ok:hover{background:var(--acc-d)}
.pill.gh{background:#fff;border:1px solid #d9cfa8}
.pill.gh:hover{background:#fffbea}
.pill:disabled{opacity:.55;cursor:default}
@media(min-width:1000px){.draft .only-m{display:none}}

/* messaggi */
.msgs{flex:1;overflow-y:auto;padding:14px 4% 10px;display:flex;flex-direction:column;gap:3px;overscroll-behavior:contain;
  background-image:radial-gradient(rgba(0,0,0,.035) 1px,transparent 1px);background-size:18px 18px}
.day{align-self:center;background:#fff;color:var(--muted);font-size:.78rem;padding:5px 12px;border-radius:8px;margin:10px 0 6px;box-shadow:var(--sh);text-transform:uppercase;letter-spacing:.02em}
.b{max-width:min(82%,460px);padding:7px 9px 6px;border-radius:var(--radius);box-shadow:var(--sh);position:relative;line-height:1.38;word-wrap:break-word;white-space:pre-wrap;margin-top:4px}
.b.me{align-self:flex-end;background:var(--me);border-top-right-radius:3px}
.b.ai{align-self:flex-start;background:var(--ai);border-top-left-radius:3px}
.b + .b.me.cont,.b + .b.ai.cont{margin-top:1px;border-radius:var(--radius)}
.b .t{float:right;font-size:.7rem;color:var(--muted);margin:8px 0 -4px 10px}
.b img{display:block;width:100%;max-width:300px;border-radius:7px;margin:-3px -5px 4px;width:calc(100% + 10px);cursor:zoom-in}
.b.img{padding:4px 4px 5px}
.b.img .t{margin-right:4px}
.b .pv{display:flex;align-items:center;gap:10px;margin-top:8px;background:#f0f2f5;border-radius:8px;padding:9px 11px;text-decoration:none;color:var(--ink);white-space:normal}
.b .pv svg{width:22px;height:22px;fill:var(--acc);flex:none}
.b .pv span{font-size:.88rem;font-weight:600}
.b .pv small{display:block;font-weight:400;color:var(--muted)}
.typing{align-self:flex-start;background:#fff;border-radius:var(--radius);border-top-left-radius:3px;box-shadow:var(--sh);padding:12px 14px;margin-top:4px;display:flex;gap:4px}
.typing i{width:7px;height:7px;border-radius:50%;background:#9aa4aa;animation:bl 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes bl{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}
.sys{align-self:center;background:#fdf4c5;color:#54656f;font-size:.82rem;text-align:center;padding:7px 12px;border-radius:8px;box-shadow:var(--sh);margin:8px 6%;max-width:440px;line-height:1.4}

/* suggerimenti */
.chips{display:flex;gap:7px;overflow-x:auto;padding:8px 10px 2px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 12px;font-size:.86rem;box-shadow:var(--sh)}
.chip:hover{background:#f7f7f7}

/* composer */
.thumbs{display:flex;gap:8px;padding:8px 12px 0;overflow-x:auto}
.thumbs div{position:relative;flex:none}
.thumbs img{width:64px;height:64px;object-fit:cover;border-radius:8px;border:2px solid #fff;box-shadow:var(--sh)}
.thumbs button{position:absolute;top:-6px;right:-6px;width:22px;height:22px;border-radius:50%;background:#111b21;color:#fff;font-size:14px;line-height:22px}
.comp{display:flex;align-items:flex-end;gap:6px;padding:8px 8px;padding-bottom:max(8px,env(safe-area-inset-bottom))}
.field{flex:1;display:flex;align-items:flex-end;background:#fff;border-radius:24px;box-shadow:var(--sh);padding:4px 4px 4px 14px;min-height:48px}
.field textarea{flex:1;border:0;outline:0;resize:none;background:none;padding:10px 0;max-height:140px;line-height:1.35;font-size:1rem}
.field .ibtn{color:#54656f}
.field .ibtn:hover{background:#f0f2f5}
.send{width:48px;height:48px;border-radius:50%;background:var(--acc);color:#fff;display:grid;place-items:center;flex:none;box-shadow:var(--sh)}
.send:hover{background:var(--acc-d)}
.send svg{width:22px;height:22px;fill:#fff}
.send.rec{background:var(--danger);animation:pulse 1.2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(192,57,43,.18)}}
.recbar{flex:1;display:flex;align-items:center;gap:10px;background:#fff;border-radius:24px;box-shadow:var(--sh);padding:0 16px;min-height:48px;color:var(--danger);font-weight:600}
.recbar .dot{width:10px;height:10px;border-radius:50%;background:var(--danger);animation:bl 1s infinite}
.recbar button{margin-left:auto;color:var(--muted);font-weight:500}
.send:disabled{opacity:.6}

/* pannello anteprima */
.side{display:none;flex-direction:column;background:#f0f2f5;border-left:1px solid #d1d7db;min-width:0}
@media(min-width:1000px){.side{display:flex}}
.side-top{display:flex;align-items:center;gap:10px;background:#f0f2f5;padding:12px 16px;border-bottom:1px solid #d1d7db;min-height:62px}
.side-top b{flex:1;font-size:.98rem}
.side-top .tag{font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 8px;border-radius:6px;background:#dfe5e7;color:#3b4a54}
.side-top .tag.draft{background:var(--warn);color:#7a5a00}
.side-top a{font-size:.88rem}
.frame{flex:1;position:relative;background:#fff}
.frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.empty{flex:1;display:grid;place-items:center;text-align:center;padding:40px;color:var(--muted)}
.empty svg{width:72px;height:72px;fill:#c3cbd0;margin:0 auto 16px}
.empty h3{color:var(--ink);font-size:1.15rem;margin-bottom:6px}

/* foglio anteprima su mobile */
.sheet{position:fixed;inset:0;z-index:50;background:#fff;display:flex;flex-direction:column}
.sheet .bar{display:flex;align-items:center;gap:8px;background:var(--hd);color:#fff;padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top))}
.sheet .bar b{flex:1}
.sheet .frame{flex:1}
.sheet .foot{display:flex;gap:8px;padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom));border-top:1px solid var(--line)}
.sheet .foot .pill{flex:1;padding:13px;font-size:.95rem}

.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:60;display:grid;place-items:center;padding:16px}
.lightbox img{max-width:100%;max-height:100%;border-radius:4px}
.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#111b21;color:#fff;padding:10px 16px;border-radius:8px;font-size:.9rem;z-index:70;box-shadow:0 6px 20px rgba(0,0,0,.25);max-width:90%}