/* TradutorBraille.com — estilo mobile-first, acessível
   Paleta índigo + alto contraste. SVG sempre com tamanho explícito. */

:root{
  --brand:#4338ca; --brand-d:#3730a3; --brand-l:#eef2ff; --brand-ring:#c7d2fe;
  --ink:#0f172a; --body:#334155; --muted:#64748b; --line:#e2e8f0; --line-d:#cbd5e1;
  --bg:#f8fafc; --card:#ffffff; --ok:#15803d; --warn:#b45309; --warn-bg:#fffbeb;
  --maxw:1120px; --r:14px; --r-sm:9px; --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06);
  --braille:#1e1b4b;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--body);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
img,svg{max-width:100%}
svg{width:1.2em;height:1.2em;flex:none;vertical-align:-.15em}
a{color:var(--brand-d);text-underline-offset:2px}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5,h6{color:var(--ink);line-height:1.25;margin:0 0 .5em;font-weight:750}
h1{font-size:clamp(1.7rem,5vw,2.5rem);letter-spacing:-.02em}
h2{font-size:clamp(1.35rem,3.5vw,1.85rem);letter-spacing:-.01em}
h3{font-size:1.2rem}h4{font-size:1.05rem}h5{font-size:.98rem}h6{font-size:.9rem}
p{margin:0 0 1rem}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,28px)}
.hidden{display:none!important}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.6rem}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.6rem 1rem;z-index:200}
.skip:focus{left:8px;top:8px}

/* ---------- Botões ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  font:inherit;font-weight:650;border:1px solid transparent;border-radius:var(--r-sm);
  padding:.72rem 1.15rem;min-height:46px;cursor:pointer;text-decoration:none;
  transition:background .15s,border-color .15s,transform .05s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d);color:#fff}
.btn-ghost{background:#fff;border-color:var(--line-d);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-d)}
.btn-sm{padding:.5rem .8rem;min-height:38px;font-size:.92rem}
.btn-block{width:100%}

/* ---------- Cabeçalho ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.18rem;
  color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.brand .logo{width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:1.05rem;flex:none}
.brand .logo svg{width:20px;height:20px}
.brand b{color:var(--brand-d)}
.nav-toggle{display:none}
.nav-burger{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;
  border:1px solid var(--line-d);border-radius:9px;background:#fff;cursor:pointer;color:var(--ink)}
.nav-burger svg{width:22px;height:22px}
.nav-links{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;
  border-bottom:1px solid var(--line);padding:.5rem clamp(16px,4vw,28px) 1rem;flex-direction:column;gap:.15rem}
.nav-toggle:checked ~ .nav-links{display:flex}
.nav-links a{padding:.7rem .4rem;color:var(--ink);text-decoration:none;font-weight:600;border-radius:8px;
  border-bottom:1px solid var(--line)}
.nav-links a:last-of-type{border-bottom:none}
.nav-links a.cta{background:var(--brand);color:#fff;text-align:center;margin-top:.4rem;border:none}
.nav-links a:hover{color:var(--brand-d)}

@media(min-width:920px){
  .nav-burger{display:none}
  .nav-links{display:flex;position:static;flex-direction:row;align-items:center;gap:.3rem;
    border:none;padding:0;background:none}
  .nav-links a{border:none;padding:.5rem .7rem;font-size:.97rem}
  .nav-links a.cta{margin:0 0 0 .4rem;padding:.6rem 1.05rem;border-radius:9px}
}

/* Seletor de idioma */
.langsw{position:relative;flex:none;margin-left:.3rem}
.lang-btn{display:inline-flex;align-items:center;gap:.35rem;cursor:pointer;
  border:1px solid var(--line-d);border-radius:9px;background:#fff;color:var(--ink);
  padding:.5rem .7rem;font-weight:600;font-size:.9rem;white-space:nowrap}
.lang-btn>svg:first-child{width:18px;height:18px}
.lang-btn>svg:last-child{width:14px;height:14px;opacity:.55}
.lang-menu{display:none;position:absolute;right:0;top:calc(100% + 6px);min-width:165px;
  background:#fff;border:1px solid var(--line-d);border-radius:12px;box-shadow:var(--shadow);
  padding:.35rem;z-index:60}
#lang-toggle:checked ~ .lang-menu{display:block}
.lang-menu a{display:block;padding:.55rem .7rem;border-radius:8px;color:var(--ink);
  text-decoration:none;font-weight:600;font-size:.92rem}
.lang-menu a:hover{background:var(--brand-l);color:var(--brand-d)}
.lang-menu a[aria-current="true"]{background:var(--brand);color:#fff}
@media(max-width:919px){
  .brand{margin-right:auto}
  .langsw{order:2}
  .nav-burger{order:3;margin-left:.25rem}
}
@media(max-width:430px){ .lang-btn>span{display:none} .lang-btn{padding:.5rem .55rem} }

/* ---------- Seções ---------- */
.section{padding:clamp(2.2rem,6vw,3.6rem) 0}
.section.alt{background:#fff;border-block:1px solid var(--line)}
.hero{padding-top:clamp(1.6rem,5vw,2.6rem)}
.eyebrow{display:inline-block;background:var(--brand-l);color:var(--brand-d);font-weight:700;
  font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;padding:.32rem .7rem;border-radius:999px}
.lead{font-size:clamp(1.05rem,2.4vw,1.22rem);color:var(--body);max-width:60ch}
.sec-head{max-width:64ch;margin-bottom:1.5rem}
.sec-head .eyebrow{margin-bottom:.7rem}
.hero-badges{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.1rem}
.pill{display:inline-flex;align-items:center;gap:.35rem;background:#fff;border:1px solid var(--line-d);
  color:var(--ink);font-size:.85rem;font-weight:600;padding:.35rem .7rem;border-radius:999px}
.pill svg{width:15px;height:15px;color:var(--ok)}

/* ---------- Ferramenta Braille ---------- */
.bt{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);
  overflow:hidden;margin-top:1.4rem}
.bt-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  padding:1rem 1.1rem;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,#fcfcff)}
.bt-title{display:flex;align-items:center;gap:.5rem;font-weight:750;color:var(--ink);font-size:1.05rem}
.bt-title svg{width:20px;height:20px;color:var(--brand)}
.bt-hint{color:var(--muted);font-size:.9rem}
.bt-grid{display:grid;grid-template-columns:1fr;gap:0}
@media(min-width:860px){.bt-grid{grid-template-columns:1fr 1fr}}
.bt-pane{padding:1rem 1.1rem}
.bt-pane + .bt-pane{border-top:1px solid var(--line)}
@media(min-width:860px){.bt-pane + .bt-pane{border-top:none;border-left:1px solid var(--line)}}
.bt-pane-head{display:flex;align-items:center;justify-content:space-between;gap:.6rem;margin-bottom:.5rem;min-height:38px}
.bt-pane-head label{font-weight:700;color:var(--ink);font-size:.95rem}
.bt-actions{display:flex;gap:.4rem;flex-wrap:wrap}
textarea.bt-area{width:100%;min-height:170px;resize:vertical;border:1px solid var(--line-d);border-radius:var(--r-sm);
  padding:.85rem;font-family:inherit;font-size:1rem;line-height:1.6;color:var(--ink);background:#fff}
textarea.bt-area:focus{outline:3px solid var(--brand-ring);border-color:var(--brand);outline-offset:0}
textarea#bt-out{background:#fcfcff}
/* Saída em Braille grande e legível */
.bt-pane.is-braille textarea{font-size:1.7rem;line-height:1.5;color:var(--braille);letter-spacing:.04em}
.bt-controls{display:flex;flex-wrap:wrap;gap:1rem 1.4rem;align-items:end;padding:1rem 1.1rem;
  border-top:1px solid var(--line);background:#fcfcff}
.bt-field{display:flex;flex-direction:column;gap:.3rem;min-width:0}
.bt-field>span{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.bt-field select{font:inherit;padding:.6rem .7rem;border:1px solid var(--line-d);border-radius:8px;background:#fff;
  min-height:44px;color:var(--ink)}
.bt-check{display:inline-flex;align-items:center;gap:.5rem;font-size:.92rem;color:var(--ink);cursor:pointer;min-height:44px}
.bt-check input{width:20px;height:20px;accent-color:var(--brand)}
.bt-bar{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;padding:1rem 1.1rem;border-top:1px solid var(--line)}
.bt-status{color:var(--muted);font-size:.9rem;padding:.4rem 0}
.bt-grade{margin-left:auto;font-size:.82rem;color:var(--brand-d);background:var(--brand-l);
  padding:.3rem .65rem;border-radius:999px;font-weight:700}

/* Histórico */
.bt-history{padding:0 1.1rem 1.1rem}
.bt-hist-empty{color:var(--muted);font-size:.9rem;margin:0}
.bt-hist-list{list-style:none;margin:0 0 .6rem;padding:0;display:flex;flex-direction:column;gap:.4rem}
.bt-hist-item{width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:9px;
  padding:.55rem .7rem;cursor:pointer;display:flex;flex-direction:column;gap:.15rem}
.bt-hist-item:hover{border-color:var(--brand)}
.bt-hist-dir{font-size:.72rem;color:var(--brand-d);font-weight:700}
.bt-hist-txt{color:var(--ink);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- Tabela de referência ---------- */
.bt-table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:1rem;table-layout:fixed}
.bt-table caption{text-align:left;color:var(--muted);font-size:.88rem;margin-bottom:.5rem}
.bt-table th,.bt-table td{border:1px solid var(--line);padding:.55rem .6rem;text-align:center;overflow-wrap:anywhere}
.bt-table th{background:var(--brand-l);color:var(--brand-d);font-size:.85rem}
.bt-table .cell{font-size:1.5rem;color:var(--braille);line-height:1}
.ref-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(72px,1fr));gap:.5rem;margin:1rem 0}
.ref-item{border:1px solid var(--line);border-radius:10px;background:#fff;padding:.6rem .3rem;text-align:center}
.ref-item .c{font-size:1.7rem;color:var(--braille);line-height:1.1}
.ref-item .l{font-size:.85rem;color:var(--muted);font-weight:700;margin-top:.2rem}

/* ---------- Cards / grade ---------- */
.cards{display:grid;grid-template-columns:1fr;gap:.9rem;margin-top:1.4rem}
@media(min-width:620px){.cards{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.cards.c3{grid-template-columns:1fr 1fr 1fr}}
.card{display:flex;flex-direction:column;gap:.3rem;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:1.1rem;text-decoration:none;color:var(--body);box-shadow:var(--shadow);
  transition:border-color .15s,transform .1s}
.card:hover{border-color:var(--brand-ring);transform:translateY(-2px)}
.card .ico{width:40px;height:40px;border-radius:10px;background:var(--brand-l);color:var(--brand-d);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:.4rem}
.card .ico svg{width:21px;height:21px}
.card h3{margin:0;font-size:1.05rem;color:var(--ink)}
.card p{margin:0;font-size:.92rem;color:var(--muted)}
.card .go{margin-top:.4rem;color:var(--brand-d);font-weight:700;font-size:.88rem}

/* ---------- Prosa ---------- */
.prose{max-width:72ch}
.prose h2{margin-top:1.8rem}.prose h3{margin-top:1.4rem}.prose h4{margin-top:1.1rem}
.prose ul,.prose ol{margin:0 0 1rem;padding-left:1.3rem}
.prose li{margin:.3rem 0}
.prose code{background:#eef2ff;color:var(--brand-d);padding:.1rem .35rem;border-radius:5px;font-size:.92em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.prose .braille-inline{font-size:1.25em;color:var(--braille)}

/* Resposta rápida (AI/snippet/秒懂) */
.quick{background:linear-gradient(180deg,#fff,var(--brand-l));border:1px solid var(--brand-ring);
  border-left:5px solid var(--brand);border-radius:var(--r);padding:1rem 1.15rem;color:var(--ink);
  font-size:1.05rem;line-height:1.6}
.quick b,.quick strong{color:var(--brand-d)}
.quick .q-label{display:flex;align-items:center;gap:.4rem;font-size:.72rem;font-weight:800;
  letter-spacing:.08em;text-transform:uppercase;color:var(--brand-d);margin-bottom:.35rem}
.quick .q-label svg{width:15px;height:15px}

/* Aviso/nota */
.note{background:var(--brand-l);border:1px solid var(--brand-ring);border-radius:var(--r-sm);
  padding:.85rem 1rem;margin:1rem 0;color:var(--ink)}
.note svg{display:inline-block;width:18px;height:18px;vertical-align:-.18em;margin-right:.15em;color:var(--brand-d)}
.note.warn{background:var(--warn-bg);border-color:#fde68a}
.note.warn svg{color:var(--warn)}

/* ---------- FAQ ---------- */
.faq{margin-top:1.2rem;display:flex;flex-direction:column;gap:.6rem}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.faq summary{padding:.95rem 1.1rem;font-weight:650;color:var(--ink);cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.3rem;color:var(--brand);flex:none}
.faq details[open] summary::after{content:"\2212"}
.faq .a{padding:0 1.1rem 1rem;color:var(--body)}
.faq .a p{margin:.4rem 0}

/* ---------- Breadcrumb ---------- */
.crumbs{font-size:.85rem;color:var(--muted);padding:.9rem 0}
.crumbs a{color:var(--brand-d);text-decoration:none}
.crumbs span{margin:0 .4rem;color:var(--line-d)}

/* ---------- Anúncios ---------- */
.ad-slot{margin:1.4rem auto;min-height:90px;border:1px dashed var(--line-d);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:.78rem;
  letter-spacing:.08em;text-transform:uppercase;background:#fcfcfd;max-width:970px}

/* ---------- Tabela de planejamento/relacionados ---------- */
.related{display:grid;grid-template-columns:1fr;gap:.7rem;margin-top:1rem}
@media(min-width:620px){.related{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.related{grid-template-columns:1fr 1fr 1fr}}
.rel{display:flex;gap:.7rem;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:.8rem .9rem;text-decoration:none;color:var(--body)}
.rel:hover{border-color:var(--brand-ring)}
.rel .ri{width:34px;height:34px;border-radius:8px;background:var(--brand-l);color:var(--brand-d);flex:none;
  display:inline-flex;align-items:center;justify-content:center}
.rel .ri svg{width:18px;height:18px}
.rel b{color:var(--ink);font-size:.95rem;display:block}
.rel span{color:var(--muted);font-size:.84rem}

.tags{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1.2rem}
.tags a{font-size:.82rem;color:var(--brand-d);background:var(--brand-l);border-radius:999px;
  padding:.3rem .7rem;text-decoration:none}
.tags a:hover{background:var(--brand-ring)}

.byline{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;color:var(--muted);font-size:.86rem;margin:.4rem 0 1.2rem}
.byline svg{width:14px;height:14px}
.byline .dot{width:4px;height:4px;border-radius:50%;background:var(--line-d)}

/* ---------- Rodapé ---------- */
.site-footer{background:#0f172a;color:#cbd5e1;margin-top:2rem;padding:2.4rem 0 1.4rem}
.foot-grid{display:grid;grid-template-columns:1fr;gap:1.6rem}
@media(min-width:620px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.foot-brand{display:inline-flex;align-items:center;gap:.5rem;color:#fff;font-weight:800;font-size:1.1rem;text-decoration:none}
.foot-brand .logo{width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.foot-brand .logo svg{width:18px;height:18px}
.site-footer h4{color:#fff;font-size:.92rem;margin:0 0 .7rem;letter-spacing:.02em}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.45rem}
.site-footer a{color:#cbd5e1;text-decoration:none;font-size:.92rem}
.site-footer a:hover{color:#fff}
.foot-about{color:#94a3b8;font-size:.9rem;max-width:34ch;margin:.6rem 0 0}
.foot-bottom{border-top:1px solid #1e293b;margin-top:1.8rem;padding-top:1.2rem;
  display:flex;flex-wrap:wrap;gap:.6rem;justify-content:space-between;color:#94a3b8;font-size:.85rem}

/* ---------- Cookie / flash ---------- */
.cookie-bar{position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:150;background:#fff;
  border:1px solid var(--line-d);border-radius:var(--r);box-shadow:0 10px 40px rgba(15,23,42,.2);
  padding:1rem 1.1rem;display:flex;flex-wrap:wrap;align-items:center;gap:.8rem;max-width:760px;margin:0 auto}
.cookie-bar p{margin:0;font-size:.9rem;color:var(--body);flex:1;min-width:220px}
.bt-flash{position:fixed;left:50%;bottom:1.5rem;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:.7rem 1.2rem;border-radius:999px;font-size:.9rem;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:200}
.bt-flash.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 404 ---------- */
.nf{text-align:center;padding:clamp(2.5rem,8vw,5rem) 0}
.nf .code{font-size:clamp(4rem,18vw,8rem);font-weight:850;color:var(--brand-l);line-height:1;letter-spacing:-.03em}
.nf h1{margin-top:-.4em}

@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}