/* Rosa · base comum dos laboratórios (lab-kit 2026.10)
   Componentes com prefixo rl-. Sem !important e sem seletores genéricos que alterem
   cores com significado científico (escalas de pH, espectros, elementos). */

@font-face{font-family:Inter;src:url('../fonts/inter.ttf') format('truetype');font-weight:100 900;font-display:swap}
@font-face{font-family:'Playfair Display';src:url('../fonts/playfair.ttf') format('truetype');font-weight:400 900;font-display:swap}

/* 1. Tokens ---------------------------------------------------------------- */
:root{
  --rl-marfim:#fbf6ef;
  --rl-papel:#fffdf9;
  --rl-porcelana:#f3f6fb;
  --rl-porcelana-2:#e6ecf5;
  --rl-azulejo:#0b3d91;
  --rl-azulejo-2:#1d56b8;
  --rl-azulejo-claro:#e7eef9;
  --rl-tinta:#062a6b;
  --rl-texto:#16294a;
  --rl-suave:#4a5b77;
  --rl-linha:#d3dcea;
  --rl-linha-forte:#aebdd6;
  --rl-rosa:#e91e7a;
  --rl-rosa-texto:#b4135c;
  --rl-rosa-claro:#fde8f1;
  --rl-sol:#f4b400;
  --rl-sol-claro:#fff4d6;
  --rl-ok:#1e7a4c;--rl-ok-claro:#e6f4ec;
  --rl-alerta:#8a5a00;--rl-alerta-claro:#fff3d6;
  --rl-erro:#b3261e;--rl-erro-claro:#fdecea;
  --rl-quimica:#c2185b;--rl-fisica:#0b3d91;--rl-biologia:#1f7a5c;

  --rl-font:Inter,"Segoe UI",system-ui,-apple-system,Arial,sans-serif;
  --rl-serif:"Playfair Display",Georgia,"Times New Roman",serif;
  --rl-fs-xs:.8125rem;  /* 13px: menor texto permitido */
  --rl-fs-sm:.875rem;   /* 14px */
  --rl-fs-md:.9375rem;  /* 15px */
  --rl-fs-lg:1.0625rem; /* 17px */
  --rl-fs-xl:1.375rem;  /* 22px */
  --rl-fs-2xl:1.625rem; /* 26px */

  --rl-s1:4px;--rl-s2:8px;--rl-s3:12px;--rl-s4:16px;--rl-s5:20px;--rl-s6:24px;--rl-s8:32px;
  --rl-r-sm:8px;--rl-r-md:12px;--rl-r-lg:18px;
  --rl-sombra-1:0 1px 2px rgba(6,42,107,.06),0 2px 6px rgba(6,42,107,.05);
  --rl-sombra-2:0 2px 4px rgba(6,42,107,.05),0 10px 28px rgba(6,42,107,.09);
  --rl-sombra-palco:0 1px 0 #fff inset,0 18px 40px -18px rgba(6,42,107,.35),0 2px 6px rgba(6,42,107,.06);
  --rl-foco:0 0 0 3px var(--rl-papel),0 0 0 6px var(--rl-sol);
  --rl-header-h:64px;
  --rl-side-w:360px;
  --rl-transicao:.18s cubic-bezier(.2,.7,.2,1);
  --rl-azulejo-faixa:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='14' viewBox='0 0 28 14'%3E%3Crect width='28' height='14' fill='%23f7f9fd'/%3E%3Cg fill='none' stroke='%230b3d91' stroke-width='1.1' opacity='.55'%3E%3Cpath d='M14 1.5 19.5 7 14 12.5 8.5 7Z'/%3E%3Cpath d='M0 1.5 5.5 7 0 12.5M28 1.5 22.5 7 28 12.5'/%3E%3C/g%3E%3Ccircle cx='14' cy='7' r='1.6' fill='%23e91e7a' opacity='.75'/%3E%3Ccircle cx='0' cy='7' r='1.2' fill='%230b3d91' opacity='.5'/%3E%3Ccircle cx='28' cy='7' r='1.2' fill='%230b3d91' opacity='.5'/%3E%3C/svg%3E");
  color-scheme:light;
}
html[data-theme="projecao"]{
  --rl-marfim:#ffffff;--rl-papel:#ffffff;--rl-porcelana:#ffffff;--rl-porcelana-2:#eef2f8;
  --rl-texto:#00143d;--rl-suave:#1f3357;--rl-linha:#8ea2c4;--rl-linha-forte:#4f6a96;
  --rl-azulejo-claro:#dbe6f8;--rl-sombra-palco:0 0 0 2px #0b3d91;
}

/* 2. Base ------------------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}
html{font-size:16px;-webkit-text-size-adjust:100%;text-size-adjust:100%}
html.rl-present{font-size:19px}
body.rl-body{margin:0;background:var(--rl-marfim);color:var(--rl-texto);font:400 var(--rl-fs-md)/1.55 var(--rl-font);font-synthesis:none;-webkit-font-smoothing:antialiased}
.rl-body h1,.rl-body h2,.rl-body h3,.rl-body p{margin:0}
.rl-body button,.rl-body input,.rl-body select,.rl-body textarea{font:inherit;color:inherit}
.rl-body a{color:var(--rl-azulejo)}
.rl-body :focus-visible{outline:none;box-shadow:var(--rl-foco);border-radius:var(--rl-r-sm)}
.rl-body [hidden]{display:none}
.rl-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.rl-skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--rl-papel);color:var(--rl-azulejo);padding:10px 14px;border-radius:var(--rl-r-sm);box-shadow:var(--rl-sombra-2)}
.rl-skip:focus{top:12px}
.rl-num{font-variant-numeric:tabular-nums lining-nums}
.rl-icon{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* 3. Estrutura do laboratório --------------------------------------------- */
.rl-app{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(0,1fr) var(--rl-side-w);grid-template-rows:auto minmax(0,1fr);grid-template-areas:"header header" "main side";height:100vh;height:100dvh;overflow:hidden}
.rl-header{grid-area:header;display:flex;align-items:center;gap:var(--rl-s4);padding:10px var(--rl-s5);min-height:var(--rl-header-h);background:var(--rl-papel);border-bottom:1px solid var(--rl-linha)}
.rl-heading{min-width:0;flex:1;display:flex;align-items:center;gap:6px 16px;flex-wrap:wrap}
.rl-subject{display:inline-flex;align-items:center;gap:6px;font-size:var(--rl-fs-xs);font-weight:650;color:var(--rl-subject,var(--rl-azulejo));padding:3px 10px 3px 8px;border:1px solid currentColor;border-radius:999px;white-space:nowrap;align-self:center}
.rl-subject::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.rl-subject[data-subject="quimica"]{--rl-subject:var(--rl-quimica)}
.rl-subject[data-subject="fisica"]{--rl-subject:var(--rl-fisica)}
.rl-subject[data-subject="biologia"]{--rl-subject:var(--rl-biologia)}
.rl-title{font:600 var(--rl-fs-xl)/1.2 var(--rl-serif);color:var(--rl-tinta);letter-spacing:-.005em}
.rl-objective{flex:1 1 380px;min-width:260px;max-width:96ch;font-size:var(--rl-fs-xs);color:var(--rl-suave);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rl-objective b{color:var(--rl-tinta);font-weight:650}
.rl-header-tools{display:flex;align-items:center;gap:6px;flex:none}

.rl-main{grid-area:main;min-width:0;min-height:0;display:flex;flex-direction:column;padding:var(--rl-s4) var(--rl-s4) var(--rl-s4) var(--rl-s5);gap:var(--rl-s3);overflow:auto}
.rl-side{grid-area:side;min-height:0;display:flex;flex-direction:column;background:var(--rl-papel);border-left:1px solid var(--rl-linha)}

/* 4. Palco: a bancada iluminada -------------------------------------------- */
.rl-stage{position:relative;flex:1 0 auto;min-height:max(340px,58vh);display:flex;flex-direction:column;border-radius:var(--rl-r-lg);background:var(--rl-porcelana);box-shadow:var(--rl-sombra-palco);overflow:hidden;isolation:isolate}
.rl-stage::before{content:"";position:absolute;inset:0 0 auto 0;height:14px;background:var(--rl-azulejo-faixa) repeat-x 0 0/28px 14px;border-bottom:1px solid #c9d5ea;z-index:2;pointer-events:none}
.rl-stage::after{content:"";position:absolute;inset:14px 0 0 0;z-index:-1;background:radial-gradient(120% 90% at 28% 0%,#ffffff 0%,rgba(255,255,255,.65) 38%,rgba(255,255,255,0) 70%),linear-gradient(180deg,var(--rl-porcelana) 0%,var(--rl-porcelana-2) 100%);pointer-events:none}
.rl-stage-view{position:relative;flex:1 1 auto;min-height:0;margin-top:14px;display:flex;align-items:center;justify-content:center}
.rl-stage-view>svg,.rl-stage-view>canvas{display:block;max-width:100%;max-height:100%}
.rl-stage-view>svg.rl-fill,.rl-stage-view>canvas.rl-fill,.rl-stage-view>.rl-fill{position:absolute;inset:0;width:100%;height:100%;max-width:none;max-height:none}
.rl-stage canvas{touch-action:none}
.rl-stage [data-rl-orbit]{cursor:grab}
.rl-stage [data-rl-orbit]:active{cursor:grabbing}
.rl-stage-top{position:absolute;top:24px;left:12px;right:12px;display:flex;align-items:flex-start;justify-content:space-between;gap:8px;z-index:3;pointer-events:none}
.rl-stage-top>*{pointer-events:auto}
.rl-stage-title{font-size:var(--rl-fs-sm);font-weight:650;color:var(--rl-tinta);background:rgba(255,253,249,.9);border:1px solid var(--rl-linha);border-radius:999px;padding:4px 12px;box-shadow:var(--rl-sombra-1)}
.rl-status{display:inline-flex;align-items:center;gap:6px;font-size:var(--rl-fs-xs);font-weight:600;color:var(--rl-suave);background:rgba(255,253,249,.92);border:1px solid var(--rl-linha);border-radius:999px;padding:4px 10px;box-shadow:var(--rl-sombra-1)}
.rl-status::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--rl-linha-forte)}
.rl-status[data-kind="ativo"]::before{background:var(--rl-rosa)}
.rl-status[data-kind="ok"]::before{background:var(--rl-ok)}
.rl-status[data-kind="pausa"]::before{background:var(--rl-sol)}
.rl-status[data-kind="erro"]::before{background:var(--rl-erro)}
.rl-status[data-kind="erro"]{color:var(--rl-erro)}
.rl-stage-bottom{position:absolute;left:12px;right:12px;bottom:12px;display:flex;align-items:flex-end;justify-content:space-between;gap:8px;z-index:3;pointer-events:none}
.rl-stage-bottom>*{pointer-events:auto}
.rl-hint{max-width:min(62ch,70%);font-size:var(--rl-fs-sm);line-height:1.4;color:var(--rl-tinta);background:rgba(255,253,249,.94);border:1px solid var(--rl-linha);border-left:3px solid var(--rl-rosa);border-radius:var(--rl-r-sm);padding:7px 12px;box-shadow:var(--rl-sombra-1)}
.rl-hint:empty{display:none}
.rl-model-chip{display:inline-flex;align-items:center;gap:6px;font-size:var(--rl-fs-xs);font-weight:600;color:var(--rl-azulejo);background:rgba(255,253,249,.94);border:1px solid var(--rl-linha);border-radius:999px;padding:5px 11px;cursor:pointer;min-height:32px}
.rl-model-chip:hover{border-color:var(--rl-azulejo)}
.rl-model-chip .rl-icon{width:16px;height:16px}
.rl-cam{position:absolute;right:12px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:6px;z-index:3}
.rl-cam .rl-icon-btn{background:rgba(255,253,249,.95)}
.rl-legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:var(--rl-fs-xs);color:var(--rl-suave)}
.rl-legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:6px;vertical-align:-1px;background:var(--c,#888)}
.rl-legend .rl-line{width:18px;height:3px;border-radius:2px}
.rl-legend .rl-line.is-dashed{background:repeating-linear-gradient(90deg,var(--c,#888) 0 3px,transparent 3px 7px)}

/* Rótulos 3D/2D posicionados sobre o palco */
.rl-labels{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.rl-label{position:absolute;left:0;top:0;transform:translate(-50%,-50%);font-size:var(--rl-fs-xs);font-weight:650;color:var(--rl-tinta);background:rgba(255,253,249,.92);border:1px solid var(--rl-linha);border-radius:6px;padding:2px 7px;white-space:nowrap;box-shadow:var(--rl-sombra-1);transition:opacity .15s}
.rl-label.is-selected{background:var(--rl-tinta);color:#fff;border-color:var(--rl-tinta)}
.rl-label.is-behind{opacity:.35}
.rl-label.is-hidden{visibility:hidden}
.rl-app:not(.rl-labels-on) .rl-label:not(.rl-always){opacity:0}

/* Sobreposições: carregamento, erro, ausência de WebGL */
.rl-overlay{position:absolute;inset:14px 0 0 0;z-index:6;display:grid;place-items:center;padding:var(--rl-s6);background:rgba(243,246,251,.92);text-align:center}
.rl-overlay-box{max-width:46ch;display:grid;gap:var(--rl-s3);justify-items:center;background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:var(--rl-r-md);padding:var(--rl-s5) var(--rl-s6);box-shadow:var(--rl-sombra-2)}
.rl-overlay-box h2{font:600 var(--rl-fs-lg)/1.3 var(--rl-font);color:var(--rl-tinta)}
.rl-overlay-box p{font-size:var(--rl-fs-sm);color:var(--rl-suave)}
.rl-overlay[data-kind="erro"] .rl-overlay-box{border-top:3px solid var(--rl-erro)}
.rl-spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--rl-azulejo-claro);border-top-color:var(--rl-azulejo);animation:rl-spin 1s linear infinite}
@keyframes rl-spin{to{transform:rotate(360deg)}}

/* 5. Barra de experimento (sempre abaixo do palco, mesma ordem) ------------- */
.rl-transport{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:8px;background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:var(--rl-r-md);box-shadow:var(--rl-sombra-1)}
.rl-transport-group{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.rl-transport-sep{width:1px;align-self:stretch;background:var(--rl-linha);margin:2px 4px}
.rl-transport-spacer{flex:1}
.rl-transport>.rl-transport-group:last-child{margin-left:auto}
.rl-transport .rl-speed{display:flex;align-items:center;gap:6px;font-size:var(--rl-fs-sm);color:var(--rl-suave)}
.rl-transport .rl-speed select{min-height:40px;padding:6px 28px 6px 10px}
.rl-transport .rl-btn{padding:8px 13px}
@media (max-width:1560px){.rl-transport .rl-speed .rl-btn-label,.rl-hide-md{display:none}}

/* 6. Resultados ------------------------------------------------------------ */
.rl-results{display:grid;gap:var(--rl-s3);flex:none}
.rl-results.is-split{grid-template-columns:minmax(260px,.85fr) minmax(0,1.35fr);align-items:start}
.rl-results.is-split .rl-readouts{grid-template-columns:repeat(2,minmax(0,1fr))}
.rl-results.is-split .rl-chart{max-height:210px}
.rl-readouts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}
.rl-readout{position:relative;background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:var(--rl-r-md);padding:8px 14px 9px;min-width:0;box-shadow:var(--rl-sombra-1)}
.rl-readout::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--accent,var(--rl-azulejo))}
.rl-readout-label{display:block;font-size:var(--rl-fs-xs);color:var(--rl-suave);font-weight:550;line-height:1.3}
.rl-readout-value{display:block;font:650 1.25rem/1.2 var(--rl-font);color:var(--rl-tinta);font-variant-numeric:tabular-nums lining-nums;margin-top:2px;overflow-wrap:anywhere}
.rl-readout-value small{font-size:var(--rl-fs-sm);font-weight:550;color:var(--rl-suave);margin-left:3px}
.rl-readout-note{display:block;font-size:var(--rl-fs-xs);color:var(--rl-suave);margin-top:2px}
.rl-readout.is-changed .rl-readout-value{animation:rl-flash .6s ease}
@keyframes rl-flash{0%{color:var(--rl-rosa-texto)}100%{color:var(--rl-tinta)}}
.rl-results-row{display:flex;gap:var(--rl-s3);align-items:stretch;flex-wrap:wrap}
.rl-results-row>*{flex:1 1 280px;min-width:0}
.rl-card{background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:var(--rl-r-md);padding:var(--rl-s3) var(--rl-s4);box-shadow:var(--rl-sombra-1);min-width:0}
.rl-card-title{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:var(--rl-fs-sm);font-weight:650;color:var(--rl-tinta);margin-bottom:6px}
.rl-chart{display:block;width:100%;height:auto}
.rl-chart text{font:500 12px var(--rl-font);fill:var(--rl-suave)}
.rl-chart .rl-axis{stroke:var(--rl-linha-forte);stroke-width:1}
.rl-chart .rl-grid{stroke:var(--rl-linha);stroke-width:1;stroke-dasharray:3 4}

/* 7. Painel lateral com abas ---------------------------------------------- */
.rl-tabs{display:flex;gap:2px;padding:8px 8px 0;border-bottom:1px solid var(--rl-linha);background:var(--rl-papel);flex:none;overflow-x:auto;scrollbar-width:none}
.rl-tabs::-webkit-scrollbar{display:none}
.rl-tab{appearance:none;border:0;background:none;display:inline-flex;align-items:center;gap:6px;padding:10px 10px 11px;min-height:44px;font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-suave);border-bottom:3px solid transparent;cursor:pointer;white-space:nowrap;border-radius:8px 8px 0 0}
.rl-tab:hover{color:var(--rl-tinta);background:var(--rl-azulejo-claro)}
.rl-tab[aria-selected="true"]{color:var(--rl-azulejo);border-bottom-color:var(--rl-rosa)}
.rl-tab .rl-badge{margin-left:2px}
.rl-panels{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain}
.rl-panel{padding:var(--rl-s4) var(--rl-s5) var(--rl-s8)}
.rl-panel>*+*{margin-top:var(--rl-s4)}
.rl-results-tab{display:none}

/* 8. Controles ------------------------------------------------------------- */
.rl-group{border:0;margin:0;padding:0;min-width:0}
.rl-group+.rl-group,.rl-stack+.rl-group,.rl-group+.rl-stack{margin-top:var(--rl-s4);padding-top:var(--rl-s4);background:linear-gradient(var(--rl-linha),var(--rl-linha)) top/100% 1px no-repeat}
.rl-group>legend{float:left;width:100%}
.rl-group>legend+*{clear:both}
.rl-group>legend,.rl-group-title{display:block;padding:0;margin:0 0 var(--rl-s3);font-size:var(--rl-fs-sm);font-weight:700;color:var(--rl-tinta)}
.rl-group-note{font-size:var(--rl-fs-xs);color:var(--rl-suave);margin:-6px 0 var(--rl-s3)}
.rl-stack{display:grid;gap:var(--rl-s3)}
.rl-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.rl-field{display:grid;gap:5px;min-width:0}
.rl-field>span,.rl-label-text{font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-tinta)}
.rl-help-text{font-size:var(--rl-fs-xs);color:var(--rl-suave);line-height:1.45}

.rl-btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:9px 16px;border-radius:10px;border:1px solid var(--rl-linha-forte);background:var(--rl-papel);color:var(--rl-azulejo);font-size:var(--rl-fs-sm);font-weight:650;line-height:1.2;cursor:pointer;text-decoration:none;transition:background var(--rl-transicao),border-color var(--rl-transicao),color var(--rl-transicao),transform var(--rl-transicao);white-space:nowrap}
.rl-btn:hover:not(:disabled){border-color:var(--rl-azulejo);background:var(--rl-azulejo-claro)}
.rl-btn:active:not(:disabled){transform:translateY(1px)}
.rl-btn:disabled{opacity:.45;cursor:not-allowed}
.rl-btn.is-primary{background:var(--rl-rosa);border-color:var(--rl-rosa);color:#fff;box-shadow:0 6px 14px -6px rgba(233,30,122,.6)}
.rl-btn.is-primary:hover:not(:disabled){background:#d0156b;border-color:#d0156b}
.rl-btn.is-strong{background:var(--rl-azulejo);border-color:var(--rl-azulejo);color:#fff}
.rl-btn.is-strong:hover:not(:disabled){background:var(--rl-tinta);border-color:var(--rl-tinta)}
.rl-btn.is-quiet{border-color:transparent;background:transparent}
.rl-btn.is-quiet:hover:not(:disabled){background:var(--rl-azulejo-claro);border-color:transparent}
.rl-btn.is-danger{color:var(--rl-erro);border-color:#e3b3ae}
.rl-btn.is-small{min-height:36px;padding:6px 12px;font-size:var(--rl-fs-xs)}
.rl-btn.is-block{width:100%}
.rl-btn[aria-pressed="true"]:not(.is-primary){background:var(--rl-azulejo);border-color:var(--rl-azulejo);color:#fff}
.rl-btn .rl-icon{width:18px;height:18px}
.rl-icon-btn{appearance:none;display:inline-grid;place-items:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--rl-linha);background:var(--rl-papel);color:var(--rl-azulejo);cursor:pointer;transition:background var(--rl-transicao),border-color var(--rl-transicao)}
.rl-icon-btn:hover:not(:disabled){border-color:var(--rl-azulejo);background:var(--rl-azulejo-claro)}
.rl-icon-btn:disabled{opacity:.45;cursor:not-allowed}
.rl-icon-btn[aria-pressed="true"]{background:var(--rl-azulejo);border-color:var(--rl-azulejo);color:#fff}

.rl-select,.rl-input,.rl-textarea{width:100%;min-height:44px;border:1px solid var(--rl-linha-forte);border-radius:10px;background:var(--rl-papel);color:var(--rl-texto);padding:9px 12px;font-size:var(--rl-fs-md)}
.rl-select{appearance:none;padding-right:34px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%230b3d91' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;cursor:pointer}
.rl-textarea{min-height:96px;resize:vertical;line-height:1.5}
.rl-select:hover,.rl-input:hover,.rl-textarea:hover{border-color:var(--rl-azulejo)}

/* Controle deslizante com valor e unidade */
.rl-slider{display:grid;gap:4px;min-width:0}
.rl-slider+.rl-slider,.rl-slider+.rl-switch,.rl-switch+.rl-slider,.rl-field+.rl-slider,.rl-slider+.rl-field{margin-top:14px}
.rl-slider-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.rl-slider-head label,.rl-slider-head .rl-label-text{font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-tinta)}
.rl-slider-head var{font-style:italic;font-family:var(--rl-serif);font-weight:500;color:var(--rl-suave);margin-left:4px}
.rl-slider output,.rl-value{font-size:var(--rl-fs-md);font-weight:700;color:var(--rl-azulejo);font-variant-numeric:tabular-nums;white-space:nowrap}
.rl-slider-ends{display:flex;justify-content:space-between;font-size:var(--rl-fs-xs);color:var(--rl-suave)}
.rl-range{--pct:50%;-webkit-appearance:none;appearance:none;width:100%;height:28px;background:transparent;cursor:pointer;margin:0}
.rl-range::-webkit-slider-runnable-track{height:6px;border-radius:6px;background:linear-gradient(90deg,var(--rl-azulejo) var(--pct),var(--rl-porcelana-2) var(--pct));box-shadow:inset 0 1px 1px rgba(6,42,107,.15)}
.rl-range::-moz-range-track{height:6px;border-radius:6px;background:var(--rl-porcelana-2)}
.rl-range::-moz-range-progress{height:6px;border-radius:6px;background:var(--rl-azulejo)}
.rl-range::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-8px;border-radius:50%;background:#fff;border:2px solid var(--rl-azulejo);box-shadow:0 2px 6px rgba(6,42,107,.3);transition:transform var(--rl-transicao)}
.rl-range::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid var(--rl-azulejo);box-shadow:0 2px 6px rgba(6,42,107,.3)}
.rl-range:active::-webkit-slider-thumb{transform:scale(1.12);border-color:var(--rl-rosa)}
.rl-range:focus-visible{box-shadow:none}
.rl-range:focus-visible::-webkit-slider-thumb{box-shadow:var(--rl-foco)}
.rl-range:focus-visible::-moz-range-thumb{box-shadow:var(--rl-foco)}
.rl-range:disabled{opacity:.45;cursor:not-allowed}

/* Segmentado e escolhas */
.rl-seg{display:flex;padding:4px;gap:4px;background:var(--rl-porcelana);border:1px solid var(--rl-linha);border-radius:12px;flex-wrap:wrap}
.rl-seg>button{flex:1 1 auto;appearance:none;border:0;background:transparent;min-height:38px;padding:7px 12px;border-radius:9px;font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-suave);cursor:pointer}
.rl-seg>button:hover{color:var(--rl-tinta);background:rgba(255,255,255,.7)}
.rl-seg>button[aria-pressed="true"],.rl-seg>button[aria-selected="true"]{background:var(--rl-papel);color:var(--rl-azulejo);box-shadow:0 1px 3px rgba(6,42,107,.18),inset 0 -2px 0 var(--rl-rosa)}
/* Etapas de uma explicação no palco (segmentado compacto, dentro de .rl-stage-top) */
.rl-steps{background:rgba(255,253,249,.94);box-shadow:var(--rl-sombra-1);flex-wrap:nowrap}
.rl-steps>button{min-height:32px;padding:4px 10px;font-size:var(--rl-fs-xs);white-space:nowrap}
.rl-steps>button.is-past{color:var(--rl-azulejo)}
.rl-choices{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px}
.rl-choice{appearance:none;text-align:left;display:grid;gap:2px;min-height:48px;padding:9px 12px;border:1px solid var(--rl-linha);border-radius:10px;background:var(--rl-papel);cursor:pointer;transition:border-color var(--rl-transicao),background var(--rl-transicao)}
.rl-choice strong{font-size:var(--rl-fs-sm);color:var(--rl-tinta);font-weight:650}
.rl-choice small{font-size:var(--rl-fs-xs);color:var(--rl-suave)}
.rl-choice:hover:not(:disabled){border-color:var(--rl-azulejo)}
.rl-choice[aria-pressed="true"]{border-color:var(--rl-azulejo);background:var(--rl-azulejo-claro);box-shadow:inset 3px 0 0 var(--rl-rosa)}
.rl-choice:disabled{opacity:.5;cursor:not-allowed}
.rl-list-select{display:grid;gap:4px}
.rl-list-select>button{appearance:none;display:flex;align-items:center;gap:10px;width:100%;text-align:left;min-height:40px;padding:7px 10px;border-radius:9px;border:1px solid transparent;background:transparent;font-size:var(--rl-fs-sm);font-weight:550;color:var(--rl-texto);cursor:pointer}
.rl-list-select>button:hover{background:var(--rl-azulejo-claro)}
.rl-list-select>button[aria-pressed="true"]{background:var(--rl-azulejo-claro);border-color:var(--rl-azulejo);color:var(--rl-tinta);font-weight:650}
.rl-swatch{width:12px;height:12px;border-radius:50%;flex:none;background:var(--c,#999);box-shadow:0 0 0 2px #fff,0 0 0 3px rgba(6,42,107,.2)}

/* Interruptor */
.rl-switch{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;cursor:pointer;font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-tinta)}
.rl-switch small{display:block;font-weight:400;color:var(--rl-suave);font-size:var(--rl-fs-xs)}
.rl-switch input{appearance:none;flex:none;position:relative;width:44px;height:26px;border-radius:26px;background:var(--rl-porcelana-2);border:1px solid var(--rl-linha-forte);cursor:pointer;transition:background var(--rl-transicao)}
.rl-switch input::after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(6,42,107,.35);transition:transform var(--rl-transicao)}
.rl-switch input:checked{background:var(--rl-azulejo);border-color:var(--rl-azulejo)}
.rl-switch input:checked::after{transform:translateX(18px)}
.rl-switch input:disabled{opacity:.45}

/* Passo numérico − valor + */
.rl-stepper{display:inline-grid;grid-template-columns:44px minmax(52px,1fr) 44px;align-items:center;border:1px solid var(--rl-linha-forte);border-radius:10px;background:var(--rl-papel);overflow:hidden}
.rl-stepper button{appearance:none;border:0;background:var(--rl-porcelana);height:44px;font-size:20px;font-weight:600;color:var(--rl-azulejo);cursor:pointer}
.rl-stepper button:hover:not(:disabled){background:var(--rl-azulejo-claro)}
.rl-stepper button:disabled{opacity:.4;cursor:not-allowed}
.rl-stepper input{border:0;text-align:center;font-size:var(--rl-fs-lg);font-weight:700;color:var(--rl-tinta);width:100%;min-height:44px;background:transparent;-moz-appearance:textfield}
.rl-stepper input::-webkit-outer-spin-button,.rl-stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}

/* Selos e mensagens */
.rl-badge{display:inline-flex;align-items:center;gap:4px;font-size:var(--rl-fs-xs);font-weight:650;padding:2px 9px;border-radius:999px;background:var(--rl-azulejo-claro);color:var(--rl-azulejo);white-space:nowrap}
.rl-badge:empty{display:none}
.rl-badge.is-ok{background:var(--rl-ok-claro);color:var(--rl-ok)}
.rl-badge.is-alerta{background:var(--rl-alerta-claro);color:var(--rl-alerta)}
.rl-badge.is-rosa{background:var(--rl-rosa-claro);color:var(--rl-rosa-texto)}
.rl-callout{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start;font-size:var(--rl-fs-sm);line-height:1.5;padding:10px 12px;border-radius:10px;background:var(--rl-azulejo-claro);color:var(--rl-tinta);border:1px solid #c7d6ef}
.rl-callout .rl-icon{width:18px;height:18px;margin-top:2px;color:var(--rl-azulejo)}
.rl-callout.is-ok{background:var(--rl-ok-claro);border-color:#b9dcc7}
.rl-callout.is-ok .rl-icon{color:var(--rl-ok)}
.rl-callout.is-alerta{background:var(--rl-alerta-claro);border-color:#ecd39a}
.rl-callout.is-alerta .rl-icon{color:var(--rl-alerta)}
.rl-callout.is-erro{background:var(--rl-erro-claro);border-color:#efc1bd}
.rl-callout.is-erro .rl-icon{color:var(--rl-erro)}
.rl-feedback{font-size:var(--rl-fs-sm);min-height:1.5em;color:var(--rl-suave)}
.rl-feedback.is-ok{color:var(--rl-ok);font-weight:600}
.rl-feedback.is-erro{color:var(--rl-erro);font-weight:600}
.rl-feedback.is-alerta{color:var(--rl-alerta);font-weight:600}

/* 9. Explicações em níveis -------------------------------------------------- */
.rl-prose{font-size:var(--rl-fs-md);line-height:1.62;color:var(--rl-texto);max-width:68ch}
.rl-prose h2{font:600 var(--rl-fs-lg)/1.3 var(--rl-serif);color:var(--rl-tinta);margin:0 0 6px}
.rl-prose h3{font-size:var(--rl-fs-md);font-weight:700;color:var(--rl-tinta);margin:14px 0 4px}
.rl-prose p+p,.rl-prose p+ul,.rl-prose ul+p{margin-top:8px}
.rl-prose ul,.rl-prose ol{padding-left:1.2em;margin:6px 0}
.rl-prose li+li{margin-top:4px}
.rl-prose .rl-eq{display:block;margin:8px 0;padding:8px 12px;border-radius:8px;background:var(--rl-porcelana);font:500 var(--rl-fs-lg)/1.4 var(--rl-serif);color:var(--rl-tinta);overflow-x:auto}
.rl-brief{font-size:var(--rl-fs-md);line-height:1.6;padding:12px 14px;border-radius:10px;background:var(--rl-sol-claro);border:1px solid #f0dc9c;color:var(--rl-tinta)}
.rl-more{border:1px solid var(--rl-linha);border-radius:10px;background:var(--rl-papel)}
.rl-more>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:44px;padding:8px 14px;font-weight:650;font-size:var(--rl-fs-sm);color:var(--rl-tinta)}
.rl-more>summary::-webkit-details-marker{display:none}
.rl-more>summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--rl-azulejo);border-bottom:2px solid var(--rl-azulejo);transform:rotate(45deg);transition:transform var(--rl-transicao);margin-right:4px}
.rl-more[open]>summary::after{transform:rotate(-135deg)}
.rl-more>div{padding:0 14px 14px}
.rl-model-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.rl-model-list li{display:grid;grid-template-columns:auto 1fr;gap:10px;font-size:var(--rl-fs-sm);line-height:1.5}
.rl-model-list li::before{content:"";width:8px;height:8px;margin-top:7px;border-radius:2px;transform:rotate(45deg);background:var(--rl-azulejo)}
.rl-refs{font-size:var(--rl-fs-xs);color:var(--rl-suave)}
.rl-refs a{word-break:break-word}

/* 10. Atividade guiada (roteiro) ------------------------------------------- */
.rl-guide{display:grid;gap:10px}
.rl-guide-progress{display:flex;gap:4px}
.rl-guide-progress i{flex:1;height:4px;border-radius:4px;background:var(--rl-porcelana-2)}
.rl-guide-progress i.is-done{background:var(--rl-azulejo)}
.rl-guide-progress i.is-current{background:var(--rl-rosa)}
.rl-step{border:1px solid var(--rl-linha);border-radius:12px;background:var(--rl-papel);overflow:hidden}
.rl-step>button{appearance:none;width:100%;display:grid;grid-template-columns:32px 1fr auto;gap:10px;align-items:center;text-align:left;border:0;background:transparent;padding:10px 12px;min-height:52px;cursor:pointer}
.rl-step-n{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:var(--rl-fs-xs);font-weight:700;background:var(--rl-porcelana);color:var(--rl-suave);border:1px solid var(--rl-linha)}
.rl-step-t{font-size:var(--rl-fs-sm);font-weight:650;color:var(--rl-tinta)}
.rl-step-t small{display:block;font-weight:500;color:var(--rl-suave);font-size:var(--rl-fs-xs)}
.rl-step.is-current{border-color:var(--rl-azulejo);box-shadow:0 0 0 1px var(--rl-azulejo)}
.rl-step.is-current .rl-step-n{background:var(--rl-rosa);border-color:var(--rl-rosa);color:#fff}
.rl-step.is-done .rl-step-n{background:var(--rl-azulejo);border-color:var(--rl-azulejo);color:#fff}
.rl-step-body{padding:0 14px 14px 54px;display:grid;gap:10px;font-size:var(--rl-fs-sm);line-height:1.55}
.rl-step-body .rl-q{font-weight:650;color:var(--rl-tinta)}
.rl-step-actions{display:flex;gap:8px;flex-wrap:wrap}
.rl-options{display:grid;gap:6px}
.rl-options button{appearance:none;text-align:left;min-height:42px;padding:8px 12px;border-radius:9px;border:1px solid var(--rl-linha);background:var(--rl-papel);font-size:var(--rl-fs-sm);cursor:pointer;color:var(--rl-texto)}
.rl-options button:hover{border-color:var(--rl-azulejo)}
.rl-options button[aria-pressed="true"]{border-color:var(--rl-azulejo);background:var(--rl-azulejo-claro);font-weight:650}
.rl-questions{margin:0;padding-left:1.2em;display:grid;gap:6px;font-size:var(--rl-fs-sm)}

/* 11. Caderno -------------------------------------------------------------- */
.rl-table-wrap{overflow:auto;border:1px solid var(--rl-linha);border-radius:10px;max-height:340px;background:var(--rl-papel)}
.rl-table{width:100%;border-collapse:collapse;font-size:var(--rl-fs-xs)}
.rl-table th{position:sticky;top:0;background:var(--rl-porcelana);text-align:left;font-weight:700;color:var(--rl-tinta);padding:8px 10px;border-bottom:1px solid var(--rl-linha)}
.rl-table td{padding:8px 10px;border-bottom:1px solid var(--rl-linha);vertical-align:top;line-height:1.45}
.rl-table tr:last-child td{border-bottom:0}
.rl-table .rl-empty td{color:var(--rl-suave);text-align:center;padding:18px}

/* 12. Diálogos, preferências e avisos -------------------------------------- */
.rl-dialog{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:16px;background:rgba(6,42,107,.36)}
.rl-dialog-box{width:min(620px,100%);max-height:min(86vh,720px);overflow:auto;background:var(--rl-papel);border-radius:16px;box-shadow:0 24px 60px rgba(6,42,107,.35);padding:var(--rl-s5) var(--rl-s6) var(--rl-s6)}
.rl-dialog-box.is-wide{width:min(980px,100%)}
.rl-dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:12px}
.rl-dialog-head h2{font:600 var(--rl-fs-xl)/1.25 var(--rl-serif);color:var(--rl-tinta)}
.rl-dialog .rl-prose{max-width:none}
.rl-keys{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;font-size:var(--rl-fs-sm);margin-top:8px}
.rl-kbd{display:inline-block;min-width:26px;text-align:center;font:600 var(--rl-fs-xs)/1 var(--rl-font);padding:5px 7px;border-radius:6px;background:var(--rl-porcelana);border:1px solid var(--rl-linha-forte);border-bottom-width:2px;color:var(--rl-tinta)}
.rl-popover{position:absolute;right:16px;top:calc(var(--rl-header-h) - 4px);z-index:30;width:min(320px,calc(100vw - 32px));background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:14px;box-shadow:var(--rl-sombra-2);padding:var(--rl-s4)}
.rl-popover h2{font-size:var(--rl-fs-md);font-weight:700;color:var(--rl-tinta);margin-bottom:10px}
.rl-popover .rl-field+.rl-field{margin-top:12px}
.rl-menu{position:absolute;right:12px;top:calc(var(--rl-header-h) - 4px);z-index:30;min-width:220px;background:var(--rl-papel);border:1px solid var(--rl-linha);border-radius:12px;box-shadow:var(--rl-sombra-2);padding:6px;display:grid}
.rl-menu button{appearance:none;display:flex;align-items:center;gap:10px;border:0;background:transparent;text-align:left;min-height:44px;padding:8px 12px;border-radius:8px;font-size:var(--rl-fs-sm);font-weight:600;color:var(--rl-tinta);cursor:pointer}
.rl-menu button:hover{background:var(--rl-azulejo-claro)}
.rl-toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:45;max-width:min(520px,calc(100vw - 24px));background:var(--rl-tinta);color:#fff;font-size:var(--rl-fs-sm);font-weight:550;padding:10px 16px;border-radius:10px;box-shadow:var(--rl-sombra-2);animation:rl-toast .25s ease}
@keyframes rl-toast{from{opacity:0;transform:translate(-50%,8px)}}
.rl-banner{position:absolute;left:12px;right:12px;top:24px;z-index:7;display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;border-radius:10px;background:var(--rl-erro-claro);border:1px solid #efc1bd;color:var(--rl-tinta);font-size:var(--rl-fs-sm);box-shadow:var(--rl-sombra-2)}
.rosa-pointer{position:fixed;left:0;top:0;width:40px;height:40px;border:3px solid var(--rl-tinta);border-radius:50%;box-shadow:0 0 0 3px #fff,0 0 0 6px var(--rl-rosa);background:rgba(244,180,0,.12);pointer-events:none;z-index:2147483647;display:none;transform:translate(-50%,-50%)}
.rosa-pointer.pressed{background:rgba(244,180,0,.45);border-color:var(--rl-rosa)}
.licensed-foot{position:fixed;right:8px;bottom:4px;z-index:20;pointer-events:none;font:500 10px/1.2 var(--rl-font);color:#6a7a94;background:rgba(255,253,249,.8);padding:2px 6px;border-radius:4px}


/* HUD: leituras principais sobrepostas ao palco no celular */
.rl-hud{display:none}
@media (max-width:899px){
  .rl-hud{position:absolute;left:8px;right:8px;top:58px;z-index:4;display:flex;gap:6px;pointer-events:none}
  .rl-hud span{flex:1 1 0;min-width:0;background:rgba(255,253,249,.93);border:1px solid var(--rl-linha);border-radius:8px;padding:3px 7px;line-height:1.25;box-shadow:var(--rl-sombra-1)}
  .rl-hud small{display:block;font-size:.75rem;color:var(--rl-suave);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .rl-hud b{display:block;font-size:.8125rem;color:var(--rl-tinta);font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}
.rl-tab.is-changed::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--rl-rosa);margin-left:4px}

/* Visualizador molecular */
.rl-molecule{position:absolute;inset:0}
.rl-mol-2d{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:44px 12px 52px;overflow:auto}
.rl-mol-2d svg{display:block;width:100%;height:auto;max-height:100%}
.rl-mol-pick{cursor:pointer;outline:none}
.rl-mol-pick:focus-visible{filter:drop-shadow(0 0 3px #f4b400)}
.rl-mol-condensed{padding:24px;text-align:center;overflow-wrap:anywhere;font:600 clamp(19px,3vw,30px)/1.7 var(--rl-font);color:var(--rl-tinta)}
.rl-mol-condensed .rl-mol-formula{font-size:var(--rl-fs-sm);color:var(--rl-suave)}
.rl-mol-aromatic{display:block;max-width:640px;padding:8px 18px 0;font-size:var(--rl-fs-xs);color:var(--rl-suave);text-align:center}
.rl-label.rl-atom-label{background:rgba(255,255,255,.82);border:0;box-shadow:none;padding:1px 5px;font-size:.8125rem}
.rl-label.rl-atom-label.is-selected{background:var(--rl-rosa);color:#fff}
.rl-label.is-symbolic{border:1px solid var(--rl-linha-forte);padding:5px 8px}
.rl-label.rl-charge{font:700 .9375rem/1 var(--rl-serif);padding:2px 6px;border:0}
.rl-label.rl-charge.is-pos{color:#b4135c;background:rgba(253,232,241,.92)}
.rl-label.rl-charge.is-neg{color:#0b3d91;background:rgba(231,238,249,.92)}
.rl-label.rl-mol-note{background:rgba(255,253,249,.95);color:var(--rl-tinta);font-weight:600}
.rl-label.rl-mol-angle{background:var(--rl-sol-claro);border-color:#ecd39a;color:#6b4800;font-weight:700}

/* 13. Apresentação -------------------------------------------------------- */
html.rl-present{--rl-side-w:400px;--rl-header-h:60px}
.rl-present .rl-objective{display:none}
.rl-present .rl-readout-value{font-size:1.5rem}
.rl-app.rl-side-hidden{grid-template-columns:minmax(0,1fr) 0}
.rl-app.rl-side-hidden .rl-side{display:none}
.rl-side-toggle{display:none}
.rl-present .rl-side-toggle{display:inline-flex}

/* 14. Responsivo ---------------------------------------------------------- */
.rl-objective:hover{-webkit-line-clamp:unset}
@media (max-width:1500px){:root{--rl-side-w:340px}}
@media (max-width:1180px){:root{--rl-side-w:320px}.rl-results.is-split{grid-template-columns:1fr}}
@media (max-width:899px){
  .rl-app{display:block;height:auto;min-height:100vh;overflow:visible}
  .rl-header{position:relative;z-index:12;padding:8px 12px;min-height:56px;gap:10px}
  .rl-title{font-size:1.125rem}
  .rl-objective{font-size:var(--rl-fs-xs)}
  .rl-main{padding:8px 10px 0;overflow:visible;gap:8px}
  .rl-stage{position:sticky;top:0;z-index:10;flex:none;height:min(56vh,460px);min-height:280px;border-radius:14px}
  .rl-app.rl-stage-free .rl-stage{position:relative}
  .rl-side{border-left:0;background:transparent}
  .rl-tabs{position:sticky;top:min(56vh,460px);z-index:9;margin:8px 10px 0;padding:4px;border:1px solid var(--rl-linha);border-radius:12px;background:var(--rl-papel);box-shadow:var(--rl-sombra-1)}
  .rl-app.rl-stage-free .rl-tabs{top:0}
  .rl-tab{flex:1 0 auto;justify-content:center;padding:8px 8px;min-height:42px;font-size:var(--rl-fs-xs);border-bottom:0;border-radius:9px}
  .rl-tab[aria-selected="true"]{background:var(--rl-azulejo);color:#fff}
  .rl-panels{overflow:visible}
  .rl-panel{padding:14px 12px 28px}
  .rl-results-tab{display:inline-flex}
  .rl-main .rl-results{display:none}
  .rl-panel .rl-results{display:grid}
  .rl-readouts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rl-readout-value{font-size:1.125rem}
  .rl-objective{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .rl-stage{height:min(48vh,420px)}
  .rl-tabs{top:min(48vh,420px)}
  .rl-stage-top .rl-stage-title{display:none}
  .rl-stage-top{top:20px;left:auto}
  .rl-stage:has(.rl-hud) .rl-stage-top>:not(.rl-steps){display:none}
  .rl-stage:has(.rl-hud) .rl-stage-top{top:60px;left:8px;right:8px;justify-content:center}
  .rl-stage:has(.rl-hud):not(:has(.rl-steps)) .rl-stage-top{display:none}
  .rl-steps{max-width:100%}
  .rl-steps>button{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;padding:4px 6px}
  .rl-hud{top:20px}
  .rl-hint{max-width:none;flex:1;font-size:var(--rl-fs-xs);padding:5px 9px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .rl-stage-bottom{left:8px;right:8px;bottom:8px;flex-wrap:nowrap;align-items:flex-end}
  .rl-model-chip span{display:none}
  .rl-model-chip{padding:0;width:36px;height:36px;justify-content:center}
  .rl-cam{right:8px;gap:4px}
  .rl-cam .rl-icon-btn{width:38px;height:38px}
  .rl-transport{padding:6px;gap:6px}
  .rl-transport .rl-btn{padding:8px 12px}
  .rl-header-tools .rl-wide{display:none}
}
@media (min-width:900px){.rl-header-tools .rl-narrow{display:none}}
@media (max-width:420px){
  .rl-transport .rl-btn-label{display:none}
  .rl-transport .rl-btn.is-primary .rl-btn-label{display:inline}
  .rl-readouts{gap:6px}
  .rl-readout{padding:8px 10px}
}
@media (max-height:560px) and (max-width:899px){.rl-stage{position:relative;height:72vh}.rl-tabs{top:0}}
@media (max-width:899px){.rl-app.rl-stage-free .rl-stage{position:relative}.rl-app.rl-stage-free .rl-tabs{top:0}}

/* 15. Preferências de movimento e qualidade ------------------------------- */
@media (prefers-reduced-motion:reduce){html:not([data-motion="normal"]) *{animation-duration:.001s;animation-iteration-count:1;transition-duration:.001s;scroll-behavior:auto}}
html[data-motion="reduzir"] *{animation-duration:.001s;animation-iteration-count:1;transition-duration:.001s;scroll-behavior:auto}
html[data-quality="leve"] .rl-stage{box-shadow:0 0 0 1px var(--rl-linha)}
html[data-quality="leve"] .rl-stage::after{background:var(--rl-porcelana)}

@media print{.rl-app{display:block;height:auto}.rl-transport,.rl-tabs,.rl-header-tools{display:none}}

/* 16. O atributo hidden sempre vence o display dos componentes */
:is(.rl-header,.rl-stage,.rl-transport,.rl-results,.rl-side,.rl-panel,.rl-card,.rl-group,.rl-dialog) [hidden]{display:none}

/* 16. Investigação guiada: prever, testar, concluir (laboratórios de Física) */
.rl-inv h3{font:600 var(--rl-fs-lg)/1.3 var(--rl-serif);color:var(--rl-tinta);margin:10px 0 4px}
.rl-inv .q{font-size:var(--rl-fs-md);font-weight:650;line-height:1.5;margin:6px 0 10px;color:var(--rl-tinta)}
.rl-inv p{font-size:var(--rl-fs-sm);line-height:1.6;margin:6px 0;color:var(--rl-tinta)}
.rl-inv .steps{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0;font-size:var(--rl-fs-xs);font-weight:650}
.rl-inv .steps li{padding:4px 11px;border-radius:999px;background:var(--rl-papel);border:1px solid var(--rl-linha);color:var(--rl-suave)}
.rl-inv .steps .on{background:var(--rl-azulejo);color:#fff;border-color:var(--rl-azulejo)}
.rl-inv .steps .done{background:#e9f7ef;color:#14663a;border-color:#bfe6cf}
.rl-inv .opts{display:grid;gap:8px;margin:8px 0 12px}
.rl-inv .opt{appearance:none;text-align:left;padding:10px 12px;border:1px solid var(--rl-linha-forte);border-radius:10px;background:var(--rl-papel);font-size:var(--rl-fs-sm);line-height:1.5;color:var(--rl-tinta);cursor:pointer}
.rl-inv .opt:hover{border-color:var(--rl-azulejo)}
.rl-inv .opt.sel{border-color:var(--rl-rosa);background:#fde7f0;font-weight:650}
.rl-inv .opt.ok{border-color:#14966a;background:#e9f7ef;font-weight:650}
.rl-inv .opt.no{border-color:#c0392b;background:#fdecea}
.rl-inv .tw{overflow-x:auto}
.rl-inv table{width:100%;border-collapse:collapse;font-size:var(--rl-fs-sm);margin:8px 0;font-variant-numeric:tabular-nums;background:var(--rl-papel)}
.rl-inv th,.rl-inv td{padding:6px 8px;border-bottom:1px solid var(--rl-linha);text-align:right;white-space:nowrap}
.rl-inv th{color:var(--rl-suave);font-weight:650}
.rl-inv .fb{padding:10px 12px;border-radius:10px;font-size:var(--rl-fs-sm)}
.rl-inv .fb.ok{background:#e9f7ef}
.rl-inv .fb.no{background:#fdecea}
.rl-inv .row-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:8px}
.rl-inv .hint{font-size:var(--rl-fs-xs);color:var(--rl-suave)}
.rl-inv .button{appearance:none;display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:8px 14px;border-radius:10px;border:1px solid var(--rl-linha-forte);background:var(--rl-papel);color:var(--rl-tinta);font-weight:650;font-size:var(--rl-fs-sm);cursor:pointer}
.rl-inv .button.primary{background:var(--rl-rosa);border-color:var(--rl-rosa);color:#fff}
.rl-inv .button:disabled{opacity:.45;cursor:not-allowed}
.rl-locked{opacity:.45}

/* ===== Textos explicativos recolhíveis (laboratórios com options.notes) ===== */
[data-notes="compacto"] .rl-has-notes [data-rl-note],
[data-notes="compacto"] .rl-has-notes .rl-hint,
[data-notes="compacto"] .rl-has-notes .rl-results .rl-help-text:not([data-rl-keep]),
[data-notes="compacto"] .rl-has-notes .rl-panel[data-rl-tab="controles"] .rl-help-text:not([data-rl-keep]){display:none}
.rl-has-notes [data-rl-tool="notes"][aria-pressed="false"]{color:var(--rl-suave)}

/* ===== Física em 3D (rosa-physics3d.js) ===== */
.rl-stage .ph-3d{position:absolute;inset:0;margin:0;z-index:0;background:radial-gradient(130% 95% at 50% 4%,#ffffff 0%,#edf2f9 46%,#d3dce9 100%)}
.rl-stage.ph-mode-3d .ph-2d{visibility:hidden;pointer-events:none}
.rl-stage.ph-mode-2d .ph-3d{visibility:hidden;pointer-events:none}
.rl-stage.ph-mode-2d .rl-labels{display:none}
.rl-stage .ph-3d canvas{touch-action:none;outline:none}
.rl-stage .ph-3d canvas:focus-visible{box-shadow:inset 0 0 0 3px var(--rl-sol)}
.rl-stage .ph-3d.ph-sky-ceu{background:linear-gradient(#cfe3fb 0%,#e8f1fc 45%,#f6efe4 100%)}
.rl-stage .ph-3d.ph-sky-lua{background:radial-gradient(120% 100% at 50% 0%,#2a3346 0%,#141a26 60%,#0b0f17 100%)}
.rl-stage .ph-3d.ph-sky-marte{background:linear-gradient(#e9b48f 0%,#f3cdb0 50%,#f6e1cf 100%)}
.rl-stage .ph-3d.ph-sky-espaco{background:radial-gradient(110% 90% at 50% 40%,#16223d 0%,#0a1020 60%,#05070e 100%)}
.rl-stage .ph-3d.ph-sky-escuro{background:radial-gradient(120% 90% at 50% 10%,#2b3550 0%,#151b2b 70%,#0d111b 100%)}
.ph-viewseg{pointer-events:auto;flex-wrap:nowrap;box-shadow:var(--rl-sombra-1)}
.ph-viewseg button{min-height:34px;padding:4px 12px;border:0;border-radius:8px;background:transparent;font:650 var(--rl-fs-sm) var(--rl-font);color:var(--rl-tinta);cursor:pointer}
.ph-viewseg button[aria-pressed="true"]{background:var(--rl-azulejo);color:#fff}
.ph-viewseg button:focus-visible{outline:3px solid var(--rl-sol);outline-offset:1px}
.rl-label.ph-vec{border-color:var(--ph-c,#0b3d91);color:var(--ph-c,#0b3d91);font-weight:750;background:rgba(255,255,255,.94)}
.rl-label.ph-tag{font-weight:650}
.rl-label.ph-dark{background:rgba(10,16,32,.78);color:#fff;border-color:rgba(255,255,255,.25)}
.rl-label.ph-big{font-size:var(--rl-fs-sm);padding:4px 10px}
.rl-label.ph-warn{border-color:#f1c9a8;color:#8a4b1f;background:#fff4e7}
/* Com o texto de ajuda escondido, o primeiro elemento visível também precisa descer abaixo da legenda flutuante */
.rl-group>legend~*{clear:both}
.rl-stage .ph-3d.ph-sky-venus{background:linear-gradient(#f3d58d 0%,#f8e6b4 50%,#fbf1d6 100%)}
.rl-stage .ph-3d.ph-sky-jupiter{background:linear-gradient(#e6b98d 0%,#f1d3b2 50%,#f7e6d4 100%)}