/* Axis360 · Treino com câmera (papel APP, contrato: design/treino/CONTRATO.md, seção Visual)
   Mesmo sistema do mockup design/novo-layout/index.html (#treino): sessão preta, ouro champanhe, chips de vidro.
   Intro, resumo e erros são claros como a landing. Mobile first (390 px). */

:root{
  --bg:#fbfbfd;
  --text:#1d1d1f;
  --sec:#6e6e73;
  --gray:#f5f5f7;
  --black:#0b0b0d;
  --gold:#d7c49a;
  --gold-2:#bda36a;
  --gold-ink:#7d6534;
  --paper:#f5f2ea;
  --line:rgba(0,0,0,.08);
  --line-2:rgba(0,0,0,.14);
  --red:#ff453a;
  --ease:cubic-bezier(.2,.7,.2,1);
  --st:env(safe-area-inset-top,0px);
  --sb:env(safe-area-inset-bottom,0px);
  --sl:env(safe-area-inset-left,0px);
  --sr:env(safe-area-inset-right,0px);
  --font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Plus Jakarta Sans",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
[hidden]{display:none!important;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;}
body{
  margin:0;min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:17px;line-height:1.5;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  -webkit-tap-highlight-color:transparent;overflow-x:hidden;
}
body.em-sessao{background:#000;overflow:hidden;}
::selection{background:rgba(215,196,154,.45);}
a{color:inherit;}
svg{flex:none;}
h1,h2,p{margin:0;}

/* ---------- telas claras (intro, resumo, erros) ---------- */
.tela-clara{display:block;min-height:100vh;min-height:100dvh;background:var(--bg);}
.clara-wrap{
  max-width:1040px;margin:0 auto;
  padding:calc(12px + var(--st)) calc(16px + var(--sr)) calc(40px + var(--sb)) calc(16px + var(--sl));
}
.clara-wrap.estreito{max-width:560px;}
/* tablet/paisagem: 32 px sem perder a área segura (entalhe do iPhone deitado) */
@media (min-width:768px){.clara-wrap{padding-left:calc(32px + var(--sl));padding-right:calc(32px + var(--sr));}}

.marca-topo{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px;}
.marca{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:600;font-size:1rem;letter-spacing:-.02em;}
.mark{width:30px;height:15px;color:var(--gold);}
.selo{font-size:.75rem;font-weight:600;line-height:1;color:var(--gold-ink);padding:7px 11px;border-radius:999px;
  background:rgba(215,196,154,.16);border:1px solid rgba(215,196,154,.55);}

.eyebrow{font-size:.9375rem;font-weight:600;color:var(--gold-ink);letter-spacing:-.005em;display:inline-flex;align-items:center;gap:8px;}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 3px rgba(215,196,154,.22);}
.display{font-family:var(--display);font-weight:600;letter-spacing:-.035em;line-height:1.02;}
h1.display{font-size:clamp(2.5rem,11vw,4rem);margin-top:10px;}
h1.display:focus{outline:none;}
.lead{font-size:clamp(1.0625rem,1.6vw,1.25rem);line-height:1.45;color:var(--sec);letter-spacing:-.01em;margin-top:14px;}
#intro-oi{color:var(--text);font-weight:500;}

/* intro */
.intro-grid{display:grid;gap:24px;margin-top:8px;}
@media (min-width:900px){.intro-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px;align-items:start;margin-top:32px;}
  .ilustra{position:sticky;top:32px;}}
/* celular deitado: ilustração ao lado do texto */
@media (min-width:600px) and (max-width:899px) and (orientation:landscape){
  .intro-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start;}
  .ilustra{position:sticky;top:12px;}
  h1.display{font-size:clamp(2.25rem,6vw,3rem);}}
.ilustra{margin:0;border-radius:24px;overflow:hidden;background:var(--black);
  box-shadow:0 40px 80px -50px rgba(0,0,0,.55),inset 0 0 0 1px rgba(255,255,255,.06);}
.ilustra img{display:block;width:100%;height:auto;}

.passos{list-style:none;margin:24px 0 0;padding:0;display:grid;gap:16px;}
.passos li{display:flex;gap:14px;align-items:flex-start;}
.passos .n{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;margin-top:1px;
  font-size:.8125rem;font-weight:600;background:var(--gray);color:var(--text);box-shadow:inset 0 0 0 1px var(--line);}
.passos b{display:block;font-weight:600;font-size:.9375rem;letter-spacing:-.01em;}
.passos .t{display:block;color:var(--sec);font-size:.9375rem;line-height:1.45;}

.troca{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:24px;
  min-height:60px;padding:12px 16px;border-radius:18px;background:var(--gray);cursor:pointer;}
.troca input{position:absolute;opacity:0;width:1px;height:1px;margin:0;pointer-events:none;}
.troca-txt b{display:block;font-weight:600;font-size:.9375rem;}
.troca-txt span{display:block;font-size:.8125rem;color:var(--sec);}
.troca-ui{flex:none;position:relative;width:51px;height:31px;border-radius:999px;background:rgba(0,0,0,.16);transition:background .2s ease;}
.troca-ui::after{content:"";position:absolute;left:2px;top:2px;width:27px;height:27px;border-radius:50%;background:#fff;
  box-shadow:0 2px 6px rgba(0,0,0,.22);transition:transform .22s var(--ease);}
.troca input:checked ~ .troca-ui{background:var(--text);}
.troca input:checked ~ .troca-ui::after{transform:translateX(20px);}
.troca input:focus-visible ~ .troca-ui{outline:2px solid var(--gold-2);outline-offset:3px;}

/* botões */
.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:52px;padding:0 26px;
  border-radius:999px;border:0;font-family:var(--font);font-weight:500;font-size:1.0625rem;line-height:1.1;letter-spacing:-.01em;
  text-decoration:none;text-align:center;cursor:pointer;-webkit-user-select:none;user-select:none;
  transition:transform .25s var(--ease),background .2s ease,border-color .2s ease,box-shadow .2s ease,opacity .2s ease;}
.btn svg{width:19px;height:19px;}
.btn:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;}
.btn:active{transform:scale(.98);}
.btn-largo{width:100%;}
.btn-preto{background:var(--text);color:#fff;}
.btn-preto:hover{background:#000;box-shadow:0 10px 24px -14px rgba(0,0,0,.5);}
.btn-preto:disabled{opacity:.45;cursor:default;box-shadow:none;}
.btn-contorno{background:transparent;color:var(--text);border:1px solid var(--line-2);}
.btn-contorno:hover{background:var(--gray);}
/* Começar sempre à mão no celular: gruda no rodapé até a rolagem chegar nele */
.cta{position:sticky;bottom:0;z-index:2;margin:20px -16px 0;padding:12px 16px calc(12px + var(--sb));
  background:linear-gradient(to bottom,rgba(251,251,253,0),var(--bg) 18px);}
@media (min-width:900px){.cta{position:static;margin:24px 0 0;padding:0;background:none;}}

.privado{display:flex;align-items:flex-start;gap:8px;margin-top:16px;font-size:.875rem;line-height:1.45;color:var(--sec);}
.privado svg{width:18px;height:18px;color:var(--gold-ink);margin-top:1px;}
.legal{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);font-size:.75rem;line-height:1.5;color:var(--sec);}

.outros{display:flex;flex-wrap:wrap;align-items:center;gap:4px 14px;margin-top:14px;font-size:.875rem;color:var(--sec);}
.outros a{display:inline-flex;align-items:center;min-height:44px;color:var(--gold-ink);font-weight:500;text-decoration:underline;
  text-decoration-color:rgba(125,101,52,.35);text-underline-offset:3px;}

/* sem JS ou módulo que não carregou: aviso aparece depois de alguns segundos (CSS puro, sem script inline) */
.aviso-boot,.aviso-noscript{margin-top:16px;padding:14px 16px;border-radius:14px;background:#fff4f2;color:#8a1c12;font-size:.9375rem;}
.aviso-boot{display:none;}
html.sem-js .aviso-boot{display:block;opacity:0;visibility:hidden;animation:aviso-boot .01s linear 9s forwards;}
@keyframes aviso-boot{to{opacity:1;visibility:visible;}}

/* resumo */
.resumo-hero{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 12px;margin-top:22px;}
.resumo-hero b{font-family:var(--display);font-weight:600;font-size:clamp(4.25rem,20vw,6.5rem);line-height:.95;letter-spacing:-.045em;
  font-variant-numeric:tabular-nums;}
.resumo-hero span{font-size:1.0625rem;color:var(--sec);}
.linhas{margin:28px 0 0;border-top:1px solid var(--line);}
.linhas div{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);}
.linhas dt{color:var(--sec);font-size:.9375rem;flex:none;max-width:50%;}
.linhas dd{margin:0;font-weight:600;font-size:.9375rem;text-align:right;font-variant-numeric:tabular-nums;}
.acoes{display:grid;gap:12px;margin-top:28px;}

/* erros */
.erro-icone{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;margin-top:28px;background:var(--gray);color:var(--gold-ink);}
.erro-icone svg{width:28px;height:28px;}
#tela-erro h1.display{font-size:clamp(2rem,9vw,3rem);margin-top:18px;}
.erro-passos{display:grid;gap:12px;margin-top:24px;}
.erro-passos:empty{display:none;}
.erro-bloco{padding:16px 18px;border-radius:18px;background:var(--gray);}
.erro-bloco h2{margin:0 0 8px;font-size:.9375rem;font-weight:600;letter-spacing:-.01em;}
.erro-bloco ol{margin:0;padding-left:20px;color:var(--sec);font-size:.9375rem;line-height:1.5;}
.erro-bloco li+li{margin-top:4px;}
.erro-detalhe{margin-top:16px;font-size:.75rem;color:var(--sec);font-family:ui-monospace,Menlo,Consolas,monospace;word-break:break-word;}
.erro-detalhe:empty{display:none;}

/* ---------- sessão (escura) ---------- */
.palco{position:fixed;inset:0;z-index:10;display:block;background:#000;color:#fff;overflow:hidden;
  -webkit-user-select:none;user-select:none;touch-action:manipulation;}
.visor{position:absolute;inset:0;background:var(--black);}
.visor::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  -webkit-mask-image:radial-gradient(70% 70% at 50% 55%,#000 20%,transparent 100%);mask-image:radial-gradient(70% 70% at 50% 55%,#000 20%,transparent 100%);}
.visor video,.visor canvas,.vinheta{position:absolute;inset:0;width:100%;height:100%;}
.visor video{object-fit:contain;background:transparent;}
.visor video.espelhado{transform:scaleX(-1);}
.vinheta{pointer-events:none;
  background:linear-gradient(to bottom,rgba(0,0,0,.55) 0,rgba(0,0,0,0) 20%,rgba(0,0,0,0) 58%,rgba(0,0,0,.72) 100%);}
.visor canvas{pointer-events:none;}

.moldura{position:absolute;pointer-events:none;border-radius:30px;
  top:calc(10px + var(--st));bottom:calc(10px + var(--sb));left:calc(10px + var(--sl));right:calc(10px + var(--sr));}
.moldura::before{content:"";position:absolute;inset:0;border-radius:inherit;border:3px solid var(--moldura,transparent);opacity:0;
  box-shadow:0 0 28px -4px var(--moldura,transparent),inset 0 0 28px -8px var(--moldura,transparent);
  transition:border-color .4s var(--ease),box-shadow .4s var(--ease),opacity .3s ease;}
.palco[data-ok="0"]{--moldura:var(--red);}
.palco[data-ok="1"]{--moldura:var(--gold);}
.palco[data-camada="enquadramento"] .moldura::before,.palco[data-camada="contagem"] .moldura::before{opacity:1;}
.corner{position:absolute;width:26px;height:26px;border:1.5px solid rgba(215,196,154,.65);}
.corner.tl{left:0;top:0;border-right:0;border-bottom:0;border-top-left-radius:10px;}
.corner.tr{right:0;top:0;border-left:0;border-bottom:0;border-top-right-radius:10px;}
.corner.bl{left:0;bottom:0;border-right:0;border-top:0;border-bottom-left-radius:10px;}
.corner.br{right:0;bottom:0;border-left:0;border-top:0;border-bottom-right-radius:10px;}
.palco[data-camada="enquadramento"] .corner,.palco[data-camada="contagem"] .corner{opacity:0;}

/* chips de vidro */
/* sobre vídeo claro o vidro precisa de base escura para o texto branco passar AA */
.vf-chip{display:inline-flex;align-items:center;gap:8px;min-height:36px;padding:6px 14px;border-radius:999px;
  background:rgba(14,14,16,.62);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  font-size:.8125rem;font-weight:500;line-height:1.2;white-space:nowrap;color:#fff;}
.vf-chip .rec{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px rgba(215,196,154,.95);}
.vf-chip .mut{color:rgba(255,255,255,.62);}
.vf-btn{display:grid;place-items:center;width:44px;height:44px;padding:0;border-radius:50%;cursor:pointer;color:#fff;
  background:rgba(14,14,16,.62);border:1px solid rgba(255,255,255,.16);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:background .2s ease,color .2s ease;}
.vf-btn svg{width:20px;height:20px;}
.vf-btn:hover{background:rgba(40,40,44,.72);}
.vf-btn:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.vf-btn[aria-pressed="false"]{color:rgba(255,255,255,.6);}
.vf-btn:disabled{opacity:.5;}

.hud-topo{position:absolute;z-index:6;top:calc(22px + var(--st));left:calc(22px + var(--sl));right:calc(22px + var(--sr));
  display:flex;align-items:center;justify-content:space-between;gap:10px;}
.hud-acoes{display:flex;gap:8px;}

/* camadas por etapa */
.camada{position:absolute;inset:0;z-index:5;display:none;pointer-events:none;}
.camada button,.camada a{pointer-events:auto;}
.palco[data-camada="carregando"] .camada-carregando,
.palco[data-camada="enquadramento"] .camada-enquadramento,
.palco[data-camada="contagem"] .camada-contagem,
.palco[data-camada="serie"] .camada-serie{display:flex;}

.camada-carregando{align-items:center;justify-content:center;background:rgba(0,0,0,.72);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}
.carregando-box{max-width:320px;padding:0 24px;text-align:center;}
.carregando-box .mark{width:56px;height:28px;}
.c-titulo{margin-top:18px;font-family:var(--display);font-weight:600;font-size:1.25rem;line-height:1.2;letter-spacing:-.02em;}
.barra{width:220px;max-width:100%;height:4px;margin:18px auto 0;border-radius:4px;background:rgba(255,255,255,.14);overflow:hidden;}
.barra i{display:block;width:0;height:100%;border-radius:inherit;background:var(--gold);box-shadow:0 0 12px rgba(215,196,154,.8);transition:width .25s linear;}
.c-sub{margin-top:12px;font-size:.8125rem;line-height:1.45;color:rgba(255,255,255,.92);}

.camada-enquadramento{align-items:flex-end;justify-content:center;
  padding:0 calc(24px + var(--sr)) calc(44px + var(--sb)) calc(24px + var(--sl));text-align:center;}
/* fundo escuro atrás do texto: sobre sala clara o texto branco só com sombra ficava em ~3,2:1 (AA pede 4,5:1).
   Sem blur de propósito: os pés e o esqueleto continuam visíveis através do tom (a pessoa se enquadra por eles). */
.guia{display:flex;flex-direction:column;align-items:center;max-width:520px;padding:14px 18px;border-radius:20px;
  background:rgba(14,14,16,.62);border:1px solid rgba(255,255,255,.12);}
.guia-titulo{font-family:var(--display);font-weight:600;font-size:clamp(1.625rem,7vw,2.5rem);line-height:1.08;letter-spacing:-.03em;
  text-shadow:0 2px 18px rgba(0,0,0,.7);text-wrap:balance;}
.guia-sub{margin-top:8px;font-size:.9375rem;line-height:1.45;color:rgba(255,255,255,.92);text-shadow:0 1px 10px rgba(0,0,0,.7);}
.guia-progresso{width:160px;height:4px;margin-top:14px;border-radius:4px;background:rgba(255,255,255,.16);overflow:hidden;}
.guia-progresso i{display:block;width:0;height:100%;border-radius:inherit;background:var(--gold);transition:width .15s linear;}
.palco[data-ok="0"] .guia-progresso i{width:0!important;}

.camada-contagem{flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(closest-side,rgba(0,0,0,.62),rgba(0,0,0,0));}
.contagem-n{font-family:var(--display);font-weight:600;font-size:clamp(7rem,40vw,13rem);line-height:1;letter-spacing:-.05em;
  font-variant-numeric:tabular-nums;color:#fff;text-shadow:0 0 48px rgba(215,196,154,.5);}
/* rótulo em pílula de vidro escuro: sobre cena clara só o degradê não passava AA */
.contagem-lbl{margin-top:10px;padding:6px 14px;border-radius:999px;background:rgba(14,14,16,.62);
  font-size:1rem;font-weight:500;line-height:1.3;color:rgba(255,255,255,.94);}
.contagem-lbl:empty{display:none;}

.camada-serie{flex-direction:column;justify-content:space-between;
  padding:calc(86px + var(--st)) calc(22px + var(--sr)) calc(24px + var(--sb)) calc(22px + var(--sl));}
.serie-meio{display:flex;flex-direction:column;align-items:center;gap:10px;}
.vf-dica{display:inline-flex;align-items:center;justify-content:center;gap:10px;max-width:100%;min-height:44px;padding:10px 20px;
  border-radius:999px;background:rgba(38,31,17,.78);border:1px solid rgba(189,163,106,.75);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  font-size:1.0625rem;font-weight:600;line-height:1.25;text-align:center;color:#fff;
  opacity:0;transform:translateY(-6px);transition:opacity .25s ease,transform .3s var(--ease);}
.vf-dica::before{content:"";flex:none;width:7px;height:7px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 10px rgba(189,163,106,.9);}
.vf-dica.ativa{opacity:1;transform:none;}
/* regiões aria-live sempre renderizadas (display:none tirava do leitor de tela): vazias só não ocupam espaço */
.vf-dica:empty{min-height:0;padding:0;border-width:0;}
.vf-dica:empty::before{display:none;}
.vf-alerta{max-width:100%;padding:10px 18px;border-radius:16px;background:rgba(0,0,0,.72);border:1px solid rgba(255,69,58,.6);
  font-size:.9375rem;font-weight:500;line-height:1.35;text-align:center;color:#fff;}
.vf-alerta:empty{padding:0;border-width:0;background:none;}

.serie-base{display:flex;flex-direction:column;gap:12px;}
.serie-chips{display:flex;flex-wrap:wrap;gap:8px;}
.serie-linha{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;}
.serie-linha .btn-vidro{flex:none;margin-bottom:2px;}
.vf-count{line-height:1;min-width:0;}
.vf-count.tempo b{font-size:clamp(4rem,20vw,7rem);}
.vf-count b{display:block;font-family:var(--display);font-weight:600;font-size:clamp(4.5rem,24vw,8rem);letter-spacing:-.045em;
  font-variant-numeric:tabular-nums;white-space:nowrap;text-shadow:0 2px 24px rgba(0,0,0,.45);}
.vf-count b em{font-style:normal;font-size:.42em;color:rgba(255,255,255,.8);letter-spacing:-.02em;margin-left:4px;}
/* rótulo e "Não contou" em pílula de vidro escuro (sem fundo ficavam abaixo de AA em cena clara) */
.vf-count .lbl{display:block;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;max-width:100%;margin-top:8px;padding:4px 10px;
  border-radius:999px;background:rgba(14,14,16,.62);font-size:.875rem;line-height:1.3;color:rgba(255,255,255,.92);}
.vf-count .parcial{display:block;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;max-width:100%;margin-top:8px;font-size:.8125rem;line-height:1.3;color:var(--paper);
  min-height:1.3em;border-radius:10px;}
.vf-count .parcial:not(:empty){padding:5px 10px;background:rgba(14,14,16,.72);border:1px solid rgba(189,163,106,.6);}
.vf-count.pulsa b span{display:inline-block;animation:conta-rep .45s var(--ease);}
@keyframes conta-rep{0%{transform:scale(1.18);color:var(--gold);}100%{transform:none;color:#fff;}}
#chip-forma[data-ok="1"]{border-color:rgba(215,196,154,.7);background:rgba(38,31,17,.72);}
#chip-forma[data-ok="0"]{border-color:rgba(255,255,255,.14);}
.btn-vidro{min-height:48px;padding:0 22px;color:#fff;background:rgba(20,20,22,.66);border:1px solid rgba(255,255,255,.26);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);}
.btn-vidro:hover{background:rgba(44,44,48,.76);}
.btn-vidro:focus-visible{outline-color:var(--gold);}

/* celular deitado (paisagem baixa) */
@media (orientation:landscape) and (max-height:520px){
  .hud-topo{top:calc(12px + var(--st));}
  .camada-serie{padding-top:calc(64px + var(--st));padding-bottom:calc(14px + var(--sb));}
  /* Flexão e prancha com o celular deitado no chão: mãos, pés e tronco ficam na metade de baixo do quadro e o
     contador grande no rodapé cobria o corpo (o tempo da prancha nem pegava a regra antiga: ficava em 7rem).
     Aqui o contador sobe para o canto de cima, menor, num cartão de vidro escuro (lá em cima não há a vinheta do
     rodapé para dar contraste em parede clara); os chips vão para a linha do topo, a dica e o alerta ficam ao
     lado do contador e embaixo sobra só o Terminar. */
  .vf-count{position:absolute;top:calc(64px + var(--st));left:calc(22px + var(--sl));max-width:min(200px,28%);
    padding:8px 12px;border-radius:18px;background:rgba(14,14,16,.62);border:1px solid rgba(255,255,255,.12);}
  .vf-count b,.vf-count.tempo b{font-size:clamp(2.5rem,15vh,3.75rem);}
  .vf-count .lbl{margin-top:6px;padding:0;border-radius:0;background:none;}
  .vf-count .parcial:empty{min-height:0;margin-top:0;}
  .serie-chips{position:absolute;top:calc(16px + var(--st));left:50%;transform:translateX(-50%);flex-wrap:nowrap;}
  .serie-meio{margin-left:min(214px,32%);}
  .serie-linha{justify-content:flex-end;}
  .contagem-n{font-size:clamp(5rem,45vh,10rem);}
  .camada-enquadramento{padding-bottom:calc(22px + var(--sb));}
  .guia-titulo{font-size:clamp(1.375rem,6vh,2rem);}
  .vf-dica{font-size:.9375rem;min-height:40px;padding:8px 16px;}
}

/* desktop */
@media (min-width:900px) and (min-height:600px){
  .hud-topo{top:calc(30px + var(--st));left:40px;right:40px;}
  .camada-serie{padding:110px 40px 36px;}
  .moldura{top:18px;bottom:18px;left:18px;right:18px;}
}

/* ---------- aparelho fraco ----------
   html.leve (posto pelo app.js: poucos núcleos/memória, IA lite ou na CPU, ou fps baixo medido): sem backdrop-filter
   sobre o vídeo (7+ camadas de blur recompostas a cada quadro). O vidro fica mais opaco para manter o contraste. */
html.leve .vf-chip,html.leve .vf-btn,html.leve .btn-vidro,html.leve .vf-dica,html.leve .camada-carregando{
  -webkit-backdrop-filter:none;backdrop-filter:none;}
html.leve .vf-chip,html.leve .vf-btn{background:rgba(14,14,16,.8);}
html.leve .btn-vidro{background:rgba(20,20,22,.82);}
html.leve .vf-dica{background:rgba(38,31,17,.9);}
html.leve .camada-carregando{background:rgba(0,0,0,.8);}

/* ---------- movimento ---------- */
@media (prefers-reduced-motion:no-preference){
  .vf-chip .rec{animation:pulso 2.2s ease-in-out infinite;}
  .mark.pulsa{animation:pulso 1.6s ease-in-out infinite;}
  .contagem-n.pulsa{animation:conta-n .9s var(--ease);}
  @keyframes pulso{0%,100%{opacity:1}50%{opacity:.45}}
  @keyframes conta-n{0%{opacity:0;transform:scale(1.3);}30%{opacity:1;}100%{opacity:1;transform:none;}}
}
@media (prefers-reduced-motion:reduce){
  .btn,.troca-ui,.troca-ui::after,.moldura::before,.barra i,.guia-progresso i,.vf-dica{transition:none;}
  .vf-count.pulsa b span{animation:none;}
  .vf-dica{transform:none;}
}