/* Formulário de diagnóstico em etapas (elemento <dialog>). */
dialog.dx{border:0;padding:0;margin:auto;border-radius:24px;width:min(640px,calc(100vw - 24px));max-height:calc(100dvh - 24px);background:var(--surface);color:var(--ink);font-family:var(--font);box-shadow:0 24px 80px rgba(0,0,0,.45);overflow:hidden}
dialog.dx[open]{display:flex;flex-direction:column}
.dx::backdrop{background:rgba(10,10,10,.65);backdrop-filter:blur(4px)}
.dx-h{padding:20px 24px 0;display:grid;gap:12px}
.dx-top{display:flex;justify-content:space-between;align-items:center;gap:16px}
.dx-top p{margin:0;font-size:13px;font-weight:700;letter-spacing:var(--ls-meta);text-transform:uppercase;color:var(--ink-2)}
.dx-x{width:44px;height:44px;border:0;border-radius:50%;background:var(--sunken);color:var(--ink);cursor:pointer;display:grid;place-items:center;flex:none}
.dx-x:hover{background:var(--line)}
.dx-x svg{width:16px;height:16px}
.dx-bar{height:6px;border-radius:6px;background:var(--line);overflow:hidden}
.dx-bar i{display:block;height:100%;width:50%;background:var(--accent);border-radius:6px;transition:width .3s}
.dx-body{overflow:auto;padding:16px 24px 8px;flex:1;min-height:0}
.dx-body h2{margin:0;font-size:26px;line-height:1.15;font-weight:600;letter-spacing:-.015em;max-width:none}
.dx-body .sub{margin:6px 0 20px;color:var(--ink-2);font-size:15px;line-height:1.45}
.step{display:none;border:0;padding:0;margin:0;min-width:0}
.step.on{display:block}
.f{margin-bottom:18px}
.f>label,.f>.lg{display:block;font-weight:600;font-size:14px;margin-bottom:8px}
.f small{display:block;font-weight:400;color:var(--ink-2);margin-top:2px}
.f select.input{appearance:auto;padding-right:10px}
.f textarea.input{min-height:92px;padding:12px 14px;resize:vertical;line-height:1.45}
.f .input:focus-visible{outline:var(--focus-ring);outline-offset:2px}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.opts{display:flex;flex-wrap:wrap;gap:8px}
.opt{position:relative}
.opt input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.opt span{display:inline-flex;align-items:center;min-height:var(--touch-min);padding:0 16px;border:1.5px solid var(--line-strong);border-radius:var(--r-full);font-size:14px;background:var(--surface);transition:background .15s,color .15s}
.opt:hover span{border-color:var(--ink)}
.opt input:checked+span{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.opt input:focus-visible+span{outline:var(--focus-ring);outline-offset:2px}
.check{display:flex;gap:12px;align-items:flex-start;font-size:14px;line-height:1.45}
.check input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--accent);flex:none}
.err{display:none;color:var(--bad);font-size:14px;line-height:1.35;margin:6px 0 0}
.f.bad .err{display:block}
.next-info{margin:0 0 8px;padding:12px 14px;border-radius:var(--r-md);background:var(--sunken);font-size:14px;color:var(--ink)}
.dx-f{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 24px;border-top:1px solid var(--line)}
.dx-f .btn{min-height:48px}
.dx-f #dx-next{background:var(--accent);color:#fff}
.dx-f #dx-next:hover{background:var(--accent-ink)}
.done{display:none;text-align:center;padding:32px 8px 24px}
.done.on{display:block}
.done .okc{width:64px;height:64px;border-radius:50%;background:var(--ok-soft);color:var(--ok);display:grid;place-items:center;margin:0 auto 16px}
.done .okc svg{width:30px;height:30px}
.done p{color:var(--ink-2);margin:8px auto 0;max-width:42ch}
@media (max-width:900px){
  dialog.dx{width:100vw;max-width:100vw;max-height:100dvh;height:100dvh;border-radius:0}
  .cols{grid-template-columns:1fr}
  .dx-f .btn{flex:1;justify-content:center}
  .dx-f span{display:none}
}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.ts-box{margin:0 0 16px}
.send-err{margin:0 0 16px;padding:12px 14px;border-radius:var(--r-md);background:var(--bad-soft);color:var(--bad);font-size:14px;line-height:1.45}
.send-err a{color:inherit;font-weight:600}
.dx-f .btn[disabled]{opacity:.7;cursor:progress}