/* Leitor online da cartilha "Semear e Permanecer" - CTA 35 anos
   Sem dependências. Modo "rolagem" (padrão no celular) e modo "livro" (páginas lado a lado, telas largas). */

:root{
  --fundo:#0E1A12;
  --barra:rgba(14,26,18,.92);
  --linha:rgba(245,241,232,.12);
  --texto:#F5F1E8;
  --suave:#B8C4B0;
  --broto:#8CC53F;
  --mata:#14562A;
  --creme:#F5F1E8;
  --top:60px;
  --bot:64px;
  --pw:min(860px, calc(100vw - 16px));
  --ratio:1.4131;
  --raio:10px;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--fundo);-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--top) + 12px)}
body{margin:0;background:var(--fundo);color:var(--texto);font:400 15px/1.45 "Work Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  padding:calc(var(--top) + 14px) 0 calc(var(--bot) + 20px);overflow-x:auto}
img{display:block}
button{font:inherit;color:inherit}
a{color:inherit}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.lt-skip{position:fixed;left:12px;top:-60px;z-index:60;background:var(--broto);color:#0E1A12;padding:10px 14px;border-radius:8px;font-weight:600;text-decoration:none}
.lt-skip:focus{top:10px}
:focus-visible{outline:2px solid var(--broto);outline-offset:2px}

/* ---------- barra superior ---------- */
.lt-top{position:fixed;inset:0 0 auto 0;height:var(--top);z-index:30;display:flex;align-items:center;gap:10px;
  padding:0 10px 0 8px;background:var(--barra);border-bottom:1px solid var(--linha);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .25s ease}
.lt-back{display:flex;align-items:center;gap:8px;text-decoration:none;flex:0 0 auto;padding:6px;border-radius:8px}
.lt-back:hover{background:rgba(245,241,232,.08)}
.lt-back img{width:34px;height:34px;object-fit:contain}
.lt-back svg{width:20px;height:20px;opacity:.75}
.lt-title{min-width:0;flex:1 1 auto;line-height:1.1}
.lt-title h1{margin:0;font:700 21px/1 "Big Shoulders Display","Work Sans",sans-serif;letter-spacing:.02em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lt-title p{margin:3px 0 0;font-size:12.5px;color:var(--suave);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lt-actions{display:flex;align-items:center;gap:2px;flex:0 0 auto}
.lt-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;min-width:40px;padding:0 10px;border:0;border-radius:9px;
  background:transparent;cursor:pointer;font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap;transition:background .15s}
.lt-btn:hover{background:rgba(245,241,232,.09)}
.lt-btn svg{width:20px;height:20px;flex:0 0 auto}
.lt-btn[aria-pressed="true"]{background:rgba(140,197,63,.16);color:var(--broto)}
.lt-btn--pdf{background:var(--broto);color:#0E1A12;font-weight:600;margin-left:6px}
.lt-btn--pdf:hover{background:#9DD44F}
.lt-sep{width:1px;height:24px;background:var(--linha);margin:0 6px}
.lt-only-wide,.lt-only-book,.lt-only-scroll{display:none}

/* ---------- barra inferior ---------- */
.lt-bar{position:fixed;inset:auto 0 0 0;height:var(--bot);z-index:30;display:flex;align-items:center;gap:8px;
  padding:0 10px env(safe-area-inset-bottom);background:var(--barra);border-top:1px solid var(--linha);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .25s ease}
.lt-bar .lt-btn{flex:0 0 auto}
.lt-count{flex:0 0 auto;min-width:86px;height:40px;padding:0 12px;border:1px solid var(--linha);border-radius:999px;background:rgba(245,241,232,.05);
  cursor:pointer;font-variant-numeric:tabular-nums;font-size:14.5px;font-weight:600;letter-spacing:.01em}
.lt-count span{color:var(--suave);font-weight:400}
.lt-count:hover{border-color:rgba(245,241,232,.3)}
.lt-range{flex:1 1 auto;min-width:60px;height:40px;margin:0 4px;background:transparent;-webkit-appearance:none;appearance:none;cursor:pointer;--pct:0%}
.lt-range::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:linear-gradient(to right,var(--broto) var(--pct),rgba(245,241,232,.18) var(--pct))}
.lt-range::-moz-range-track{height:4px;border-radius:4px;background:rgba(245,241,232,.18)}
.lt-range::-moz-range-progress{height:4px;border-radius:4px;background:var(--broto)}
.lt-range::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;margin-top:-7px;border-radius:50%;background:var(--creme);border:0;box-shadow:0 1px 4px rgba(0,0,0,.4)}
.lt-range::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--creme);border:0}
.lt-progress{position:fixed;left:0;top:var(--top);height:2px;width:0;background:var(--broto);z-index:31;transition:width .2s ease,transform .25s ease}

/* esconder barras ao rolar (modo rolagem) */
.lt-hide .lt-top{transform:translateY(-100%)}
.lt-hide .lt-bar{transform:translateY(100%)}
.lt-hide .lt-progress{transform:translateY(calc(-1 * var(--top)))}

/* ---------- modo rolagem ---------- */
.lt-scroll{width:max-content;min-width:100%;margin:0;padding:0}
.lt-page{position:relative;width:var(--pw);aspect-ratio:1600/2261;margin:0 auto 14px;background:var(--creme);
  border-radius:3px;box-shadow:0 10px 30px rgba(0,0,0,.35);overflow:hidden;scroll-margin-top:calc(var(--top) + 12px)}
.lt-page img{width:100%;height:100%;object-fit:contain;user-select:none;-webkit-user-select:none}
.lt-page .lt-pn{position:absolute;right:8px;bottom:8px;font-size:11px;padding:2px 7px;border-radius:999px;background:rgba(14,26,18,.55);color:var(--creme);opacity:0;transition:opacity .2s;pointer-events:none}
.lt-page:hover .lt-pn{opacity:1}
.lt-noscript{max-width:640px;margin:0 auto 18px;padding:14px 16px;border:1px solid var(--linha);border-radius:var(--raio);color:var(--suave)}

/* ---------- modo livro ---------- */
.lt-book{display:none}
[data-mode="book"] body{overflow:hidden;padding:0}
[data-mode="book"] .lt-scroll{display:none}
[data-mode="book"] .lt-book{position:fixed;inset:var(--top) 0 var(--bot) 0;display:flex;align-items:center;justify-content:center;gap:18px;padding:18px 16px}
.lt-spread{--ph:min(calc(100vh - var(--top) - var(--bot) - 40px), calc((100vw - 200px) / 2 * var(--ratio)));display:flex;filter:drop-shadow(0 14px 34px rgba(0,0,0,.45))}
@supports (height:100dvh){.lt-spread{--ph:min(calc(100dvh - var(--top) - var(--bot) - 40px), calc((100vw - 200px) / 2 * var(--ratio)))}}
.lt-slot{position:relative;height:var(--ph);aspect-ratio:1600/2261;background:var(--creme);overflow:hidden;cursor:pointer}
.lt-slot img{width:100%;height:100%;object-fit:contain;transition:opacity .18s ease;user-select:none;-webkit-user-select:none}
.lt-slot.is-loading img{opacity:.35}
.lt-slot--l{border-radius:3px 0 0 3px}
.lt-slot--r{border-radius:0 3px 3px 0}
.lt-slot--l::after,.lt-slot--r::after{content:"";position:absolute;top:0;bottom:0;width:7%;pointer-events:none}
.lt-slot--l::after{right:0;background:linear-gradient(to right,rgba(0,0,0,0),rgba(0,0,0,.16))}
.lt-slot--r::after{left:0;background:linear-gradient(to left,rgba(0,0,0,0),rgba(0,0,0,.13))}
.lt-slot.is-empty{display:none}
.lt-spread.is-single .lt-slot{border-radius:3px}
.lt-spread.is-single .lt-slot::after{display:none}
.lt-side{flex:0 0 auto;width:52px;height:52px;border-radius:50%;border:1px solid var(--linha);background:rgba(245,241,232,.06);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,opacity .15s}
.lt-side:hover{background:rgba(245,241,232,.14)}
.lt-side:disabled{opacity:.25;cursor:default}
.lt-side svg{width:24px;height:24px}

/* ---------- painéis (sumário e miniaturas) ---------- */
.lt-dialog{border:0;padding:0;margin:0;max-width:none;max-height:none;background:transparent;color:var(--texto)}
.lt-dialog::backdrop{background:rgba(5,10,7,.62);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.lt-dialog[open]{display:flex}
.lt-panel{background:#13241A;border:1px solid var(--linha);display:flex;flex-direction:column;overflow:hidden}
.lt-panel header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 14px 12px 20px;border-bottom:1px solid var(--linha)}
.lt-panel h2{margin:0;font:700 22px/1 "Big Shoulders Display","Work Sans",sans-serif;text-transform:uppercase;letter-spacing:.03em}
.lt-panel .lt-body{overflow:auto;overscroll-behavior:contain;padding:8px 10px 18px}
#lt-toc{position:fixed;inset:0 auto 0 0;height:100%}
#lt-toc .lt-panel{width:min(420px,92vw);height:100%;border-width:0 1px 0 0}
.lt-toc-group{margin:14px 10px 6px;font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--broto)}
.lt-toc-item{display:grid;grid-template-columns:34px 1fr auto;gap:2px 10px;align-items:baseline;width:100%;padding:10px;border:0;border-radius:8px;background:transparent;text-align:left;cursor:pointer}
.lt-toc-item:hover,.lt-toc-item.is-here{background:rgba(245,241,232,.07)}
.lt-toc-item .n{font:700 18px/1 "Big Shoulders Display",sans-serif;color:var(--broto)}
.lt-toc-item .t{font-weight:600;font-size:15px}
.lt-toc-item .s{grid-column:2;font-size:13px;color:var(--suave)}
.lt-toc-item .p{grid-row:1;grid-column:3;font-size:13px;color:var(--suave);font-variant-numeric:tabular-nums}
#lt-grid{position:fixed;inset:0;width:100%;height:100%;align-items:center;justify-content:center;padding:16px}
#lt-grid .lt-panel{width:min(1080px,100%);max-height:100%;border-radius:14px}
.lt-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:16px 12px;padding:12px 10px}
.lt-thumb{display:flex;flex-direction:column;align-items:center;gap:7px;padding:0;border:0;background:transparent;cursor:pointer;font-size:12.5px;color:var(--suave)}
.lt-thumb img{width:100%;height:auto;aspect-ratio:1600/2261;object-fit:cover;background:#22382A;border-radius:3px;outline:2px solid transparent;outline-offset:2px;transition:outline-color .15s,transform .15s}
.lt-thumb:hover img{transform:translateY(-2px)}
.lt-thumb.is-here img{outline-color:var(--broto)}
.lt-thumb.is-here{color:var(--broto);font-weight:600}

/* ---------- aviso ---------- */
.lt-toast{position:fixed;left:50%;bottom:calc(var(--bot) + 14px);z-index:40;transform:translate(-50%,20px);opacity:0;pointer-events:none;
  display:flex;align-items:center;gap:12px;max-width:calc(100vw - 24px);padding:10px 10px 10px 16px;border-radius:12px;background:#F5F1E8;color:#14241A;
  box-shadow:0 10px 30px rgba(0,0,0,.4);font-size:14px;transition:opacity .2s,transform .2s}
.lt-toast.is-on{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.lt-toast button{border:0;border-radius:8px;padding:8px 12px;background:var(--mata);color:#fff;font-weight:600;cursor:pointer}
.lt-toast button[hidden]{display:none}

/* ---------- responsivo ---------- */
@media (min-width:760px){
  .lt-only-wide{display:inline-flex}
  [data-mode="scroll"] .lt-only-scroll{display:inline-flex}
  [data-mode="book"] .lt-only-book{display:inline-flex}
  [data-can-book="false"] .lt-modebtn{display:none}
  body{padding-top:calc(var(--top) + 22px)}
  .lt-page{margin-bottom:22px}
}
@media (max-width:759px){
  .lt-btn .lbl{display:none}
  .lt-btn--pdf{margin-left:2px;padding:0 10px}
  .lt-title h1{font-size:19px}
}
@media (max-width:420px){
  :root{--pw:calc(100vw - 10px)}
  .lt-title p{display:none}
  .lt-back img{width:30px;height:30px}
  .lt-back svg{display:none}
  .lt-count{min-width:76px;padding:0 8px}
  .lt-page{margin-bottom:8px;border-radius:2px}
}
@media (hover:none){.lt-page .lt-pn{display:none}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.lt-top,.lt-bar,.lt-progress,.lt-toast{display:none}body{padding:0;background:#fff}.lt-page{box-shadow:none;break-after:page;margin:0}}