:root{
  --lddi-primary:#4f46e5;
  --lddi-primary-2:#7c3aed;
  --lddi-accent:#06b6d4;
  --lddi-bg:#f5f7fb;
  --lddi-surface:rgba(255,255,255,.92);
  --lddi-surface-solid:#ffffff;
  --lddi-text:#172033;
  --lddi-muted:#667085;
  --lddi-border:rgba(15,23,42,.10);
  --lddi-shadow:0 18px 50px rgba(15,23,42,.12);
  --lddi-radius:22px;
  --lddi-font-scale:1;
  --lddi-line-height:1.65;
  --lddi-header-h:72px;
}
html{scroll-behavior:smooth}
html[data-lddi-motion="reduced"]{scroll-behavior:auto}
html[data-lddi-motion="reduced"] *,html[data-lddi-motion="reduced"] *::before,html[data-lddi-motion="reduced"] *::after{
  animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important
}
body.modern-ui-active{
  font-size:calc(1rem * var(--lddi-font-scale));
  line-height:var(--lddi-line-height);
  padding-top:calc(var(--lddi-header-h) + 18px)!important;
  background:
    radial-gradient(circle at 10% -10%,rgba(79,70,229,.11),transparent 28rem),
    radial-gradient(circle at 95% 10%,rgba(6,182,212,.09),transparent 25rem),
    var(--lddi-bg)!important;
  color:var(--lddi-text);
}
body.modern-ui-active.lddi-readable{--lddi-line-height:1.85}
body.modern-ui-active.lddi-readable p,
body.modern-ui-active.lddi-readable li{max-width:78ch}
body.modern-ui-active.lddi-legible{font-family:Arial,Verdana,Tahoma,sans-serif!important;letter-spacing:.018em;word-spacing:.06em}
body.modern-ui-active.lddi-wide-spacing{--lddi-line-height:1.95;letter-spacing:.025em;word-spacing:.09em}
body.modern-ui-active .container{
  width:min(1180px,calc(100% - 28px))!important;
  max-width:1180px!important;
  margin-left:auto!important;margin-right:auto!important;
  border-radius:var(--lddi-radius);
}
body.modern-ui-active img{max-width:100%;height:auto}
body.modern-ui-active a:focus-visible,
body.modern-ui-active button:focus-visible,
body.modern-ui-active input:focus-visible,
body.modern-ui-active select:focus-visible,
body.modern-ui-active [tabindex]:focus-visible{
  outline:3px solid #f59e0b!important;outline-offset:3px!important;border-radius:8px
}
body.modern-ui-active a{transition:opacity .2s ease,transform .2s ease}
body.modern-ui-active .card,
body.modern-ui-active .chapter-card,
body.modern-ui-active .content-section,
body.modern-ui-active section{
  border-radius:18px;
}
html[data-lddi-theme="dark"]{
  --lddi-bg:#0d1220;--lddi-surface:rgba(18,25,43,.92);--lddi-surface-solid:#12192b;
  --lddi-text:#f4f7ff;--lddi-muted:#aeb8cb;--lddi-border:rgba(255,255,255,.12);
  --lddi-shadow:0 20px 55px rgba(0,0,0,.35)
}
html[data-lddi-theme="dark"] body.modern-ui-active{color-scheme:dark}
html[data-lddi-theme="dark"] body.modern-ui-active .container,
html[data-lddi-theme="dark"] body.modern-ui-active main,
html[data-lddi-theme="dark"] body.modern-ui-active section{
  color:var(--lddi-text)
}
html[data-lddi-contrast="high"]{
  --lddi-bg:#000;--lddi-surface:#000;--lddi-surface-solid:#000;--lddi-text:#fff;--lddi-muted:#fff;
  --lddi-border:#fff;--lddi-primary:#ffeb3b;--lddi-primary-2:#00ffff;--lddi-accent:#00ffff
}
html[data-lddi-contrast="high"] body.modern-ui-active,
html[data-lddi-contrast="high"] body.modern-ui-active *{text-shadow:none!important}
html[data-lddi-contrast="high"] body.modern-ui-active a{color:#00ffff!important;text-decoration:underline!important}
html[data-lddi-contrast="high"] body.modern-ui-active button{border:2px solid #fff!important}
#lddi-skip{
  position:fixed;top:8px;left:12px;z-index:100000;background:#111827;color:#fff;padding:10px 14px;
  border-radius:10px;transform:translateY(-150%);transition:transform .15s
}
#lddi-skip:focus{transform:translateY(0)}
#lddi-progress{position:fixed;top:0;left:0;height:4px;width:0;background:linear-gradient(90deg,var(--lddi-primary),var(--lddi-accent));z-index:99999}
#lddi-topbar{
  position:fixed;z-index:99980;top:0;left:0;right:0;height:var(--lddi-header-h);
  display:flex;align-items:center;gap:12px;padding:0 18px;
  background:var(--lddi-surface);backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom:1px solid var(--lddi-border);box-shadow:0 8px 30px rgba(15,23,42,.08)
}
.lddi-icon-btn{
  appearance:none;border:1px solid var(--lddi-border);background:var(--lddi-surface-solid);color:var(--lddi-text);
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;cursor:pointer;font-size:20px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease
}
.lddi-icon-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(15,23,42,.11);border-color:rgba(79,70,229,.35)}
.lddi-brand{display:flex;align-items:center;gap:11px;min-width:0}
.lddi-logo{
  width:43px;height:43px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:900;
  background:linear-gradient(135deg,var(--lddi-primary),var(--lddi-accent));box-shadow:0 8px 20px rgba(79,70,229,.25)
}
.lddi-brand-text{display:flex;flex-direction:column;min-width:0}
.lddi-brand-title{font-weight:800;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lddi-brand-sub{font-size:.76rem;color:var(--lddi-muted);white-space:nowrap}
.lddi-top-actions{margin-left:auto;display:flex;gap:8px}
.lddi-action-text{display:inline}
#lddi-sidebar,#lddi-access-panel{
  position:fixed;z-index:99990;top:0;bottom:0;background:var(--lddi-surface-solid);color:var(--lddi-text);
  box-shadow:var(--lddi-shadow);transition:transform .28s cubic-bezier(.2,.8,.2,1);overflow:auto
}
#lddi-sidebar{left:0;width:min(390px,92vw);transform:translateX(-105%);padding:20px}
#lddi-sidebar.open{transform:translateX(0)}
#lddi-access-panel{right:0;width:min(420px,94vw);transform:translateX(105%);padding:20px}
#lddi-access-panel.open{transform:translateX(0)}
.lddi-panel-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.lddi-panel-head h2{font-size:1.15rem;margin:0}
.lddi-panel-head .lddi-icon-btn{margin-left:auto}
.lddi-search{position:relative;margin:10px 0 16px}
.lddi-search input{
  width:100%;box-sizing:border-box;padding:12px 14px 12px 40px;border:1px solid var(--lddi-border);
  border-radius:14px;background:var(--lddi-bg);color:var(--lddi-text);font:inherit
}
.lddi-search span{position:absolute;left:14px;top:50%;transform:translateY(-50%)}
.lddi-menu-group{margin:20px 0 8px;font-size:.74rem;text-transform:uppercase;letter-spacing:.09em;color:var(--lddi-muted);font-weight:800}
.lddi-nav{display:grid;gap:6px}
.lddi-nav a{
  color:var(--lddi-text)!important;text-decoration:none!important;padding:11px 12px;border-radius:13px;
  display:flex;align-items:center;gap:10px;border:1px solid transparent
}
.lddi-nav a:hover{background:rgba(79,70,229,.08);transform:translateX(3px)}
.lddi-nav a[aria-current="page"]{background:linear-gradient(135deg,rgba(79,70,229,.14),rgba(6,182,212,.10));border-color:rgba(79,70,229,.22);font-weight:800}
.lddi-overlay{position:fixed;z-index:99985;inset:0;background:rgba(5,10,20,.52);backdrop-filter:blur(2px);display:none}
.lddi-overlay.show{display:block}
.lddi-access-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lddi-control{
  border:1px solid var(--lddi-border);border-radius:16px;padding:12px;background:var(--lddi-bg);color:var(--lddi-text);
  cursor:pointer;text-align:left;font:inherit;min-height:72px
}
.lddi-control:hover{border-color:rgba(79,70,229,.38)}
.lddi-control strong{display:block;margin-bottom:3px}
.lddi-control small{color:var(--lddi-muted)}
.lddi-control.active{outline:2px solid var(--lddi-primary);background:rgba(79,70,229,.09)}
.lddi-range-row{display:flex;gap:8px;margin:10px 0}
.lddi-range-row button{flex:1;min-height:44px}
.lddi-access-section{padding:14px 0;border-top:1px solid var(--lddi-border)}
.lddi-access-section h3{font-size:.9rem;margin:0 0 10px}
.lddi-reader-controls{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.lddi-reader-controls button{min-height:44px}
#lddi-reading-ruler{
  position:fixed;z-index:99960;left:0;right:0;height:58px;top:45vh;pointer-events:none;
  border-top:2px solid rgba(245,158,11,.9);border-bottom:2px solid rgba(245,158,11,.9);
  background:rgba(245,158,11,.09);display:none
}
#lddi-reading-ruler.show{display:block}
#lddi-backtop{
  position:fixed;right:18px;bottom:18px;z-index:99970;opacity:0;pointer-events:none;transform:translateY(10px)
}
#lddi-backtop.show{opacity:1;pointer-events:auto;transform:none}
.lddi-shortcuts{font-size:.84rem;color:var(--lddi-muted)}
.lddi-shortcuts kbd{background:var(--lddi-bg);border:1px solid var(--lddi-border);border-bottom-width:2px;border-radius:7px;padding:2px 6px;color:var(--lddi-text)}
.lddi-status{
  position:fixed;z-index:100000;left:50%;bottom:20px;transform:translate(-50%,20px);opacity:0;
  background:#111827;color:#fff;padding:10px 14px;border-radius:12px;box-shadow:var(--lddi-shadow);transition:.2s
}
.lddi-status.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:720px){
  :root{--lddi-header-h:64px}
  #lddi-topbar{padding:0 10px;gap:8px}
  .lddi-brand-sub,.lddi-action-text{display:none}
  .lddi-brand-title{font-size:.92rem}
  .lddi-logo{width:39px;height:39px;border-radius:12px}
  .lddi-icon-btn{width:41px;height:41px;border-radius:12px}
  body.modern-ui-active{padding-top:calc(var(--lddi-header-h) + 12px)!important}
}
@media print{
  #lddi-topbar,#lddi-sidebar,#lddi-access-panel,.lddi-overlay,#lddi-progress,#lddi-backtop,#lddi-reading-ruler,#lddi-skip,.lddi-status{display:none!important}
  body.modern-ui-active{padding-top:0!important;background:#fff!important}
}


/* Ajuste de compatibilidade: oculta a barra antiga para não ficar cortada sob o cabeçalho moderno */
body.modern-ui-active .accessibility-bar,
body.modern-ui-active .language-selector,
body.modern-ui-active .chapter-navigation{
  display:none !important;
}

/* Mantém botões flutuantes úteis acima do conteúdo, mas abaixo do painel principal */
body.modern-ui-active .glossary-button,
body.modern-ui-active .download-floating-btn,
body.modern-ui-active .libras-button{
  z-index: 99940;
}


/* Visual de página/livro virtual */
body.modern-ui-active .container{
  position:relative;
  background:linear-gradient(180deg,var(--lddi-surface-solid),color-mix(in srgb, var(--lddi-surface-solid) 92%, #f8fafc));
  border:1px solid var(--lddi-border);
  box-shadow:var(--lddi-shadow), inset 0 1px 0 rgba(255,255,255,.35);
}
body.modern-ui-active .container::before{
  content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 24px 0 34px rgba(15,23,42,.03), inset -1px 0 0 rgba(255,255,255,.35);
}
html[data-lddi-theme="dark"] body.modern-ui-active .container::before,
html[data-lddi-contrast="high"] body.modern-ui-active .container::before{
  box-shadow:none;
}

.lddi-theme-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lddi-control[data-theme]{min-height:64px}
.lddi-control[data-theme] em{font-style:normal;display:block;font-size:1.15rem;margin-bottom:4px}
.lddi-control[data-theme].active{outline:2px solid var(--lddi-primary);background:rgba(79,70,229,.09)}

/* Alto contraste robusto para conteúdos herdados do sistema original */
html[data-lddi-contrast="high"] body.modern-ui-active,
html[data-lddi-contrast="high"] body.modern-ui-active .container,
html[data-lddi-contrast="high"] body.modern-ui-active section,
html[data-lddi-contrast="high"] body.modern-ui-active article,
html[data-lddi-contrast="high"] body.modern-ui-active .avatar-section,
html[data-lddi-contrast="high"] body.modern-ui-active .chapter-list li,
html[data-lddi-contrast="high"] body.modern-ui-active .scientist-profile,
html[data-lddi-contrast="high"] body.modern-ui-active .glossary-item,
html[data-lddi-contrast="high"] body.modern-ui-active .faraday,
html[data-lddi-contrast="high"] body.modern-ui-active .diagram{
  background:#000 !important;
  color:#fff !important;
  border-color:#fff !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active h1,
html[data-lddi-contrast="high"] body.modern-ui-active h2,
html[data-lddi-contrast="high"] body.modern-ui-active h3,
html[data-lddi-contrast="high"] body.modern-ui-active h4,
html[data-lddi-contrast="high"] body.modern-ui-active h5,
html[data-lddi-contrast="high"] body.modern-ui-active h6{
  color:#ffff00 !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active p,
html[data-lddi-contrast="high"] body.modern-ui-active li,
html[data-lddi-contrast="high"] body.modern-ui-active td,
html[data-lddi-contrast="high"] body.modern-ui-active th,
html[data-lddi-contrast="high"] body.modern-ui-active figcaption,
html[data-lddi-contrast="high"] body.modern-ui-active label,
html[data-lddi-contrast="high"] body.modern-ui-active span,
html[data-lddi-contrast="high"] body.modern-ui-active strong,
html[data-lddi-contrast="high"] body.modern-ui-active em,
html[data-lddi-contrast="high"] body.modern-ui-active small,
html[data-lddi-contrast="high"] body.modern-ui-active blockquote,
html[data-lddi-contrast="high"] body.modern-ui-active .diagram-caption,
html[data-lddi-contrast="high"] body.modern-ui-active .formula,
html[data-lddi-contrast="high"] body.modern-ui-active .scientist-info,
html[data-lddi-contrast="high"] body.modern-ui-active .glossary-definition,
html[data-lddi-contrast="high"] body.modern-ui-active .glossary-term{
  color:#fff !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active a{
  color:#00ffff !important;
  text-decoration:underline !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active table,
html[data-lddi-contrast="high"] body.modern-ui-active tr,
html[data-lddi-contrast="high"] body.modern-ui-active td,
html[data-lddi-contrast="high"] body.modern-ui-active th{
  background:#000 !important;
  color:#fff !important;
  border:1px solid #fff !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active thead th{
  background:#ffff00 !important;
  color:#000 !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active button:not(.lddi-icon-btn):not(.lddi-control){
  background:#ffff00 !important;
  color:#000 !important;
  border:2px solid #fff !important;
}
html[data-lddi-contrast="high"] body.modern-ui-active input,
html[data-lddi-contrast="high"] body.modern-ui-active select,
html[data-lddi-contrast="high"] body.modern-ui-active textarea{
  background:#000 !important;
  color:#fff !important;
  border:2px solid #fff !important;
}


/* Imagens de avatar e mídia dentro do conteúdo */
body.modern-ui-active .avatar-section{
  display:flex;align-items:center;gap:18px;flex-wrap:nowrap;
}
body.modern-ui-active .avatar-section img{
  width:clamp(120px, 14vw, 180px) !important;
  max-width:180px !important;
  height:auto !important;
  flex:0 0 auto;
  object-fit:cover;
  margin-right:0 !important;
}
body.modern-ui-active .avatar-section p{
  flex:1 1 auto;
}
body.modern-ui-active figure img,
body.modern-ui-active .diagram img,
body.modern-ui-active .faraday img{
  max-width:min(100%, 760px) !important;
  margin:0 auto;
}
body.modern-ui-active table{
  display:table;
  width:100%;
  overflow-x:auto;
}
@media(max-width:768px){
  body.modern-ui-active .avatar-section{flex-direction:column;align-items:center;text-align:center}
}

/* Efeito de virada de página */
#lddi-page-transition{
  position:fixed;inset:0;z-index:100001;pointer-events:none;display:none;overflow:hidden;
}
#lddi-page-transition.show{display:block}
#lddi-page-transition::before{
  content:'';position:absolute;top:0;right:-8%;width:58%;height:100%;
  background:linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.76) 12%, rgba(255,255,255,.98) 50%, rgba(232,224,205,1) 100%);
  box-shadow:-24px 0 50px rgba(0,0,0,.18), inset 10px 0 18px rgba(255,255,255,.8);
  border-left:1px solid rgba(0,0,0,.08);
  transform-origin:right center;
  border-radius:28px 0 0 28px;
  animation:lddiPageTurn .44s cubic-bezier(.2,.75,.2,1) forwards;
}
html[data-lddi-theme="dark"] #lddi-page-transition::before{
  background:linear-gradient(90deg, rgba(17,24,39,0) 0%, rgba(25,35,58,.72) 12%, rgba(22,30,49,.96) 50%, rgba(15,23,42,1) 100%);
  box-shadow:-24px 0 50px rgba(0,0,0,.45), inset 10px 0 18px rgba(255,255,255,.08);
}
@keyframes lddiPageTurn{
  0%{transform:perspective(1400px) rotateY(88deg) translateX(14%);opacity:.15}
  40%{opacity:1}
  100%{transform:perspective(1400px) rotateY(0deg) translateX(0);opacity:1}
}

/* Rodapé */
.lddi-footer{
  width:min(1180px,calc(100% - 28px));margin:28px auto 36px auto;padding:18px 22px;border-radius:18px;
  border:1px solid var(--lddi-border);background:var(--lddi-surface);color:var(--lddi-muted);text-align:center;
  box-shadow:0 10px 24px rgba(15,23,42,.06);
}
.lddi-footer strong{color:var(--lddi-text)}


/* Avatares-guia compactos: evita que o CSS global amplie imagens antigas */
body.modern-ui-active .avatar-guide{
  display:flex;align-items:center;gap:16px;
}
body.modern-ui-active .avatar-guide img{
  width:80px !important;
  max-width:80px !important;
  height:auto !important;
  flex:0 0 80px;
  object-fit:contain;
  margin-right:0 !important;
}
body.modern-ui-active .avatar-guide p{flex:1 1 auto;margin:0}
@media(max-width:700px){
  body.modern-ui-active .avatar-guide img{width:68px !important;max-width:68px !important;flex-basis:68px}
}