/* Sentinela Tec — tela do chat: lateral estilo ChatGPT (pesquisa, recolher, histórico) + conversa.
   Sem fontes externas. */
:root{
  --bg:#e9edf5; --panel:#ffffff; --panel2:#f4f7fc; --ink:#1a2340; --muted:#5a6478; --line:#e4e9f2;
  --bot:#ffffff; --bot-ink:#1f2a44; --bot-line:#e7ecf5; --user:#162C66; --user-ink:#ffffff;
  --navy:#162C66; --navy-deep:#0F1A3A; --side-ink:#eef2fb; --side-muted:#9fb0d8; --side-line:rgba(255,255,255,.1); --side-item:rgba(255,255,255,.07);
  --accent:#F5C518; --accent-ink:#14224E; --accent-2:#E0A800;
  --shadow:0 18px 44px rgba(20,34,78,.14);
  --head:"Segoe UI","Helvetica Neue",Arial,system-ui,sans-serif;
  --side-w:288px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0a1225; --panel:#101b38; --panel2:#0d1730; --ink:#e9eefb; --muted:#9aa6c6; --line:#22325c;
  --bot:#16224a; --bot-ink:#e7ecf7; --bot-line:#26386a; --user:#2c4286; --user-ink:#ffffff;
  --shadow:0 18px 44px rgba(0,0,0,.4); color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0a1225; --panel:#101b38; --panel2:#0d1730; --ink:#e9eefb; --muted:#9aa6c6; --line:#22325c;
  --bot:#16224a; --bot-ink:#e7ecf7; --bot-line:#26386a; --user:#2c4286; --user-ink:#ffffff;
  --shadow:0 18px 44px rgba(0,0,0,.4); color-scheme:dark;
}
:root[data-accent="azul"]{--accent:#4C86FF;--accent-ink:#071a40;--accent-2:#2f6ae0}
:root[data-accent="esmeralda"]{--accent:#16C98B;--accent-ink:#052a1e;--accent-2:#0faa73}

*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html,body{height:100%}
body.app{background:var(--bg);color:var(--ink);font:15px/1.5 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;overflow:hidden}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}
a{color:inherit}
svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

.shell{display:grid;grid-template-rows:minmax(0,1fr);grid-template-columns:var(--side-w) 1fr;height:100%;height:100dvh;transition:grid-template-columns .22s ease}
.shell.collapsed{grid-template-columns:0 1fr}

/* ---------- ÍCONES ---------- */
.ibtn{width:36px;height:36px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex:0 0 36px;color:inherit}
.ibtn svg{width:20px;height:20px}
.ibtn:hover{background:var(--side-item)}

/* ---------- LATERAL ---------- */
.side{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-deep) 100%);color:var(--side-ink);display:flex;flex-direction:column;min-width:0;overflow:hidden;width:var(--side-w)}
.shell.collapsed .side{visibility:hidden}
.sidehead{display:flex;align-items:center;gap:4px;padding:12px 10px 8px 16px}
.brand{display:flex;align-items:center;gap:9px;flex:1;min-width:0}
.brand .nm{font-family:var(--head);font-weight:800;font-size:17px;letter-spacing:-.2px;white-space:nowrap}
.brand .nm b{color:var(--accent);font-weight:800}
.searchbox{display:flex;align-items:center;gap:8px;margin:2px 12px 6px;background:var(--side-item);border:1px solid var(--side-line);border-radius:10px;padding:0 10px}
.searchbox svg{width:16px;height:16px;flex:0 0 16px;color:var(--side-muted)}
.searchbox input{flex:1;min-width:0;background:none;border:none;outline:none;color:var(--side-ink);font:inherit;font-size:14px;padding:9px 0}
.searchbox input::placeholder{color:var(--side-muted)}
.nav{display:flex;flex-direction:column;gap:2px;padding:4px 10px}
.item{display:flex;align-items:center;gap:11px;text-align:left;padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--side-ink);width:100%}
.item svg{width:19px;height:19px;flex:0 0 19px;opacity:.9}
.item:hover{background:var(--side-item)}
.item.strong{background:var(--side-item);font-weight:600}

.history{flex:1;min-height:60px;overflow-y:auto;padding:6px 10px 8px;margin-top:6px}
.history::-webkit-scrollbar{width:6px}.history::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:3px}
.hgroup{font-size:12px;color:var(--side-muted);font-weight:600;padding:12px 10px 5px}
.hitem{display:flex;align-items:center;gap:4px;border-radius:10px;position:relative}
.hitem:hover,.hitem.on{background:var(--side-item)}
.hopen{flex:1;min-width:0;text-align:left;padding:9px 10px;font-size:14px;color:var(--side-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hdel{width:28px;height:28px;border-radius:7px;font-size:13px;color:var(--side-muted);opacity:0;flex:0 0 28px}
.hitem:hover .hdel,.hdel:focus{opacity:1}
.hdel:hover{background:rgba(255,255,255,.12);color:#fff}
.hempty{font-size:13px;color:var(--side-muted);padding:12px 10px;line-height:1.5}

.sidefoot{padding:10px 12px 12px;border-top:1px solid var(--side-line);display:flex;flex-direction:column;gap:10px}
.usercard{display:flex;align-items:center;gap:10px}
.avatarcircle{width:34px;height:34px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:12.5px;display:flex;align-items:center;justify-content:center;flex:0 0 34px}
.who{flex:1;min-width:0}
.who .l1{font-size:14px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.who .l2{font-size:12px;color:var(--side-muted)}
.pillbtn{border:1px solid var(--side-line)!important;background:var(--side-item);border-radius:20px;padding:6px 13px;font-size:12.5px;font-weight:700;color:var(--side-ink)}
.pillbtn:hover{background:rgba(255,255,255,.14)}
.usage{background:var(--side-item);border:1px solid var(--side-line);border-radius:12px;padding:10px 12px}
.usage .top{display:flex;justify-content:space-between;font-size:12px;color:var(--side-muted);margin-bottom:7px}
.usage .top b{color:var(--side-ink);font-weight:700}
.meter{height:6px;border-radius:5px;background:rgba(255,255,255,.12);overflow:hidden}
.meter i{display:block;height:100%;width:0;background:var(--accent);border-radius:5px;transition:width .4s}
.usage .lk{font-size:11.5px;color:var(--side-muted);margin-top:7px;text-decoration:underline}
.settings{display:flex;align-items:center;justify-content:space-between;gap:8px}
.swatches{display:flex;gap:7px}
.sw{width:20px;height:20px;border-radius:50%;border:2px solid transparent;outline:1px solid var(--side-line)}
.sw[aria-pressed="true"]{border-color:#fff}
.sw-ambar{background:#F5C518}.sw-azul{background:#4C86FF}.sw-esmeralda{background:#16C98B}
.themebtn{display:flex;align-items:center;gap:7px;background:var(--side-item);border:1px solid var(--side-line);border-radius:20px;padding:6px 12px;font-size:12.5px;font-weight:600;color:var(--side-ink)}
.promo{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 12px 10px}
.pbtn{display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 8px;border-radius:12px;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:13.5px;line-height:1.15}
.pbtn:nth-child(2){background:var(--side-item);color:var(--side-ink);border:1px solid var(--accent)}
.pbtn svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.pbtn em{display:block;font-style:normal;font-size:10.5px;font-weight:600;opacity:.8}
.pbtn:hover{filter:brightness(1.1)}
.links{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:11.5px;color:var(--side-muted)}
.links button{text-decoration:underline;color:var(--side-muted)}
.links button:hover{color:var(--side-ink)}

/* ---------- CONVERSA ---------- */
.main{display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;background:var(--bg);height:100%}
.top{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--panel);color:var(--ink)}
.top .ibtn:hover{background:var(--panel2)}
.burger{display:none}
.shell.collapsed .burger{display:flex}
.top .ti{font-family:var(--head);font-weight:700;font-size:16px}
.top .st{font-size:11.5px;color:#14a06a;font-weight:600;display:flex;align-items:center;gap:5px}
.top .st:before{content:"";width:7px;height:7px;border-radius:50%;background:#1fc98e}
.spacer{flex:1}

.stage{flex:1;min-height:0;display:flex;flex-direction:column}
.scroll{flex:1;overflow-y:auto;padding:24px}
.thread{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:16px}

/* Início: título + barra de conversa NO MEIO. Depois da 1ª mensagem a barra desce para o rodapé. */
.main.is-empty .stage{justify-content:center;padding-bottom:6vh}
.main.is-empty .scroll{flex:0 0 auto;overflow:visible;padding-bottom:6px}
.main.is-empty .composer{background:transparent;border-top:none}
.main.is-empty .cbox{box-shadow:var(--shadow);border-radius:28px}
.main.is-empty .disc{display:none}
.hero{max-width:640px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px;padding:0 10px}
.hero .embbig{filter:drop-shadow(var(--shadow))}
.hero .big{font-family:var(--head);font-size:26px;font-weight:800}
.hero p{color:var(--muted);font-size:14.5px;line-height:1.55;max-width:480px}
.herochips{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-top:2px}
.hero .cta{display:none}

.msg{display:flex;gap:11px;align-items:flex-end}
.msg.me{justify-content:flex-end}
.msg .av{width:34px;height:34px;flex:0 0 34px;object-fit:contain;filter:drop-shadow(0 4px 8px rgba(20,34,78,.25))}
.bub{max-width:78%;padding:14px 16px;border-radius:16px;font-size:14.5px;line-height:1.55;overflow-wrap:anywhere}
.bot .bub{background:var(--bot);border:1px solid var(--bot-line);color:var(--bot-ink);border-bottom-left-radius:5px}
.me .bub{background:var(--user);color:var(--user-ink);border-bottom-right-radius:5px}
.bub p{margin:0 0 .5em}.bub p:last-child{margin-bottom:0}
.bub ul{margin:.3em 0 .5em 1.2em}
.bub b,.bub strong{font-weight:700}
.src{margin-top:11px;font-size:12.5px;color:var(--navy);background:#fff7d8;border:1px solid #f0df90;border-radius:9px;padding:7px 11px}
.src ul{margin:3px 0 0 1.1em}
:root[data-theme="dark"] .src{color:#ffe9a6;background:#2a2712;border-color:#574f1f}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .src{color:#ffe9a6;background:#2a2712;border-color:#574f1f}}
.sign{margin-top:9px;font-size:11.5px;color:var(--muted);font-weight:600}
.warn{margin-top:3px;font-size:11px;color:var(--muted)}
.direct{margin-top:11px;border:1px solid var(--line);border-radius:11px;padding:12px;background:var(--panel2)}
.direct .dt{font-size:13px;font-weight:700;margin-bottom:8px}
.direct .dn{font-size:11.5px;color:var(--muted);margin-top:7px}
.direct a{display:inline-flex;align-items:center;gap:7px;background:var(--navy);color:#fff;font-size:12.5px;font-weight:600;border-radius:9px;padding:8px 13px;text-decoration:none}
.free{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;color:#14a06a;font-weight:700;margin-top:9px}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin:2px 0 0 45px}
.chip{font-size:13px;color:var(--ink);border:1.5px solid var(--line)!important;background:var(--panel);border-radius:20px;padding:9px 14px;font-weight:600}
.chip:hover{border-color:var(--accent)!important}
.typing .bub{color:var(--muted)}
/* respostas sem balão, como no ChatGPT */
.bot .av{display:none}
.bot .bub{background:none;border:none;border-radius:0;padding:2px 0;max-width:100%;font-size:15.5px;line-height:1.65;color:var(--ink)}
.msg.me .bub{border-radius:20px;padding:11px 18px}
.chips{margin-left:0}
.acts{display:flex;gap:4px;margin-top:10px}
.act{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--muted);background:transparent;border:none;cursor:pointer}
.act:hover,.act.on{background:var(--panel2);color:var(--ink)}
.act svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

.composer{border-top:none;background:var(--bg,transparent);padding:10px 20px 10px}
.cbox{max-width:760px;margin:0 auto;display:flex;gap:10px;align-items:flex-end;background:var(--panel);border:1px solid var(--line);border-radius:30px;padding:6px 6px 6px 14px;box-shadow:0 2px 10px rgba(0,0,0,.12)}
.cbox:focus-within{border-color:var(--accent)}
.cinput{flex:1;min-width:0;border:none;background:transparent;border-radius:24px;padding:11px 12px;font-size:15px;color:var(--ink);resize:none;font-family:inherit;max-height:140px;line-height:1.4;outline:none}
.cinput::placeholder{color:var(--muted)}
.sendbtn{width:44px;height:44px;border-radius:50%;background:var(--accent);color:var(--accent-ink);font-size:19px;font-weight:900;display:flex;align-items:center;justify-content:center;flex:0 0 44px}
.sendbtn:disabled{opacity:.4;cursor:not-allowed}
.disc{max-width:760px;margin:8px auto 0;font-size:11px;color:var(--muted);text-align:center;padding-bottom:env(safe-area-inset-bottom,0px)}
.disc strong{display:block;color:var(--ink)}

/* ---------- PAINEL (drawer) ---------- */
.overlay{position:fixed;inset:0;background:rgba(10,18,40,.5);opacity:0;pointer-events:none;transition:.25s;z-index:30}
.overlay.on{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:420px;max-width:92vw;background:var(--panel);box-shadow:-20px 0 50px rgba(10,18,40,.25);transform:translateX(100%);transition:.28s cubic-bezier(.4,0,.2,1);z-index:40;display:flex;flex-direction:column;visibility:hidden}
.drawer.on{transform:translateX(0);visibility:visible}
.dhead{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.dhead h2{font-family:var(--head);font-size:18px}
.dclose{font-size:22px;color:var(--muted);width:34px;height:34px;border-radius:9px}
.dbody{padding:22px;overflow-y:auto;font-size:14px;line-height:1.6;color:var(--ink)}
.dbody h4{font-family:var(--head);font-size:14.5px;margin:18px 0 6px;color:var(--navy)}
:root[data-theme="dark"] .dbody h4{color:var(--accent)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .dbody h4{color:var(--accent)}}
.dbody p{color:var(--muted);margin-bottom:6px}
.dbody .big{font-size:15px;color:var(--ink);font-weight:600}
.dbody .note{font-size:12.5px;margin-top:14px}
.faq{border:1px solid var(--line);border-radius:11px;padding:13px 15px;margin-bottom:10px;background:var(--panel2)}
.faq .q{font-weight:700;font-size:14px;margin-bottom:4px}
.faq .a{font-size:13.5px;color:var(--muted);line-height:1.55}
.steps{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.step{display:flex;gap:12px;align-items:flex-start}
.step .n{flex:0 0 26px;height:26px;border-radius:8px;background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center}
.step .tx b{display:block;font-size:13.5px}
.step .tx span{font-size:13px;color:var(--muted)}

/* ---------- CELULAR / JANELA ESTREITA ---------- */
@media (max-width:880px){
  .shell,.shell.collapsed{grid-template-columns:1fr}
  .side{position:fixed;top:0;left:0;bottom:0;width:min(300px,86vw);z-index:50;transform:translateX(-100%);transition:transform .26s;visibility:hidden}
  .shell.collapsed .side{visibility:hidden}
  .side.open,.shell.collapsed .side.open{transform:translateX(0);visibility:visible}
  .burger{display:flex!important}
  .scroll{padding:18px 14px}
  .chips{margin-left:0}
  .bub{max-width:88%}
  .composer{padding:12px 12px 8px}
}