/* ============ estilo dos componentes ============ */
/* Par visual de componentes.js: braço, régua, TAB, diagrama de acorde e piano.
   Cada bloco aqui corresponde a um criarX() de lá, e saiu de dentro de
   index.html pelo mesmo motivo que o JS saiu — a prática guiada mostra as
   mesmas coisas, e copiar estas regras pra lá seria a mesma duplicação, só que
   em CSS.

   Chamava-se estilo-braco.css enquanto só tinha braço e TAB; virou mentira
   quando ganhou o diagrama e o teclado.

   Depende dos tokens de :root de estilo-base.css, então carrega DEPOIS dele.
   Nada aqui é específico de uma seção: quem posiciona o braço na página (a
   barra fixa de index.html, por exemplo) faz isso no seu próprio <style>. */

/* ---- braço e régua ---- */
.rolagem-fixa{position:sticky;top:0;z-index:20;background:var(--tolex);
  padding:10px 0 8px;margin-bottom:26px;box-shadow:0 10px 24px rgba(0,0,0,.35);
  border-bottom:1px solid rgba(220,211,190,.14)}
.rolagem{overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.braco{min-width:730px;background:var(--jacaranda);border-radius:3px;box-shadow:inset 0 0 44px rgba(0,0,0,.55)}
.linha{display:grid;grid-template-columns:56px repeat(15,minmax(40px,1fr));position:relative;height:36px}
.linha::after{content:"";position:absolute;left:56px;right:0;top:50%;height:var(--esp);
  background:linear-gradient(180deg,#B9C2BC,#6E7A74);transform:translateY(-50%);pointer-events:none}
.casa{position:relative;display:flex;align-items:center;justify-content:center}
.casa:not(.aberta){box-shadow:inset -2px 0 0 var(--traste)}
.casa.aberta{box-shadow:inset -5px 0 0 #D9D2C0;background:rgba(0,0,0,.35)}
.ponto{position:relative;z-index:2;width:25px;height:25px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--dado);font-size:10px;font-weight:700;border:0;padding:0;cursor:pointer;
  background:transparent;color:transparent;opacity:0;transform:scale(.5);
  transition:opacity .3s ease,transform .3s ease,background .2s ease,box-shadow .2s ease;
  transition-delay:calc(var(--f) * 14ms)}
.ponto.dentro{opacity:1;transform:scale(1);background:#414F49;color:var(--tinta)}
.ponto.dentro.raiz{background:var(--valvula);color:#16211F;box-shadow:0 0 14px rgba(216,53,42,.55)}
.ponto.dentro.terca{background:var(--patina);color:#12201E}
.ponto.dentro.quinta{background:var(--painel);color:#1B2422}
.ponto.dentro.setima{background:var(--setima);color:#241A17}
.braco.focado .ponto.dentro{opacity:.14;transform:scale(.82)}
.braco.focado .ponto.dentro.aceso{opacity:1;transform:scale(1.04)}
.braco.focado .ponto.dentro.aceso.base-slonimsky{
  background:var(--valvula);color:#16211F;
  box-shadow:0 0 0 2px rgba(255,255,255,.9), 0 0 12px rgba(216,53,42,.75);
  transform:scale(1.16);font-weight:800;z-index:5}
.ponto.tocando,
.braco.focado .ponto.dentro.tocando,
.braco.focado .ponto.dentro.aceso.tocando,
.braco.focado .ponto.dentro.aceso.base-slonimsky.tocando{
  transform:scale(1.42)!important;opacity:1!important;z-index:30!important;
  box-shadow:0 0 0 3px #FFFFFF, 0 0 0 6px #FFD23F, 0 0 22px 6px rgba(255,210,63,.95)!important;
  color:#FFFFFF!important;
  transition:transform .06s ease,box-shadow .06s ease!important}
.braco.focado .ponto.dentro.aceso.base-slonimsky.tocando{background:#E6392F!important}
.braco.focado .ponto.dentro.aceso:not(.base-slonimsky).tocando{background:#4A5B54!important}
.ponto.soando{box-shadow:0 0 0 3px var(--patina),0 0 14px rgba(111,168,160,.7)}
.braco.focado .ponto.dentro.soando{opacity:1}
.regua{display:grid;grid-template-columns:56px repeat(15,minmax(40px,1fr));min-width:730px;margin-top:5px}
.regua span{font-family:var(--dado);font-size:10px;color:var(--corda);text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:3px}
.regua span i{width:5px;height:5px;border-radius:50%;background:transparent;display:block}
.regua span.marcada i{background:rgba(220,211,190,.5)}
.regua span.marcada{color:var(--painel)}
.ponto:focus-visible{outline:2px solid var(--valvula);outline-offset:2px}
.braco-info{font-family:var(--display);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--corda);margin:0 0 8px}

/* ---- TAB ---- */
/* A TAB quebra em sistemas (ver criarTab em componentes.js): cada .tab-sistema
   é uma linha com os nomes das cordas a esquerda e os compassos a direita. As
   "linhas" das cordas sao os próprios traços de cada coluna, então a altura de
   linha de .tab-nomes span e de .col span TEM que ser a mesma (22px) — se uma
   das duas mudar, a TAB desalinha e não há borda pra disfarçar. */
.tab{background:var(--tolex-2);border:1px solid rgba(220,211,190,.16);border-radius:3px;
  margin-top:22px;padding:10px 14px 12px}
.tab-sistema{display:flex;align-items:flex-start;scroll-margin-top:240px}
.tab-sistema + .tab-sistema{margin-top:16px}
.tab-nomes{flex:none;padding:16px 8px 0 0}
.tab-nomes span{display:block;font-family:var(--dado);font-size:12px;line-height:22px;
  color:var(--corda);font-weight:700}
.tab-compassos{display:flex;flex-wrap:nowrap;min-width:0}
.tab-compasso{position:relative;padding:16px 0 0 4px;
  box-shadow:inset 1px 0 0 rgba(220,211,190,.18)}
.tab-num{position:absolute;top:1px;left:4px;font-family:var(--dado);font-size:10px;
  color:var(--corda);opacity:.8}
.tab-cols{display:flex}
.col{flex:none;width:24px;text-align:center;border-radius:2px}
.col span{display:block;font-family:var(--dado);font-size:12px;line-height:22px;color:rgba(140,154,147,.55)}
.col span.n{color:var(--painel);font-weight:700}
.col.ativa{background:rgba(216,53,42,.22)}
.col.ativa span.n{color:var(--valvula)}

/* ---- diagrama de acorde ---- */
/* par visual de diagramaDeAcorde() em componentes.js */
.dg{background:linear-gradient(180deg,#E6DECB,#C8BEA6);border-radius:2px;padding:12px 12px 9px;
  box-shadow:0 8px 22px rgba(0,0,0,.35);text-align:center;
  transition:transform .15s ease,box-shadow .15s ease}
.dg[role="button"]{cursor:pointer}
.dg[role="button"]:hover{transform:translateY(-2px)}
.dg:focus-visible{outline:2px solid var(--valvula);outline-offset:2px}
.dg[aria-pressed="true"]{box-shadow:0 0 0 3px var(--valvula),0 8px 22px rgba(0,0,0,.35)}
.dg p{font-family:var(--display);font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  color:#5E5643;margin:8px 0 0}
.dg[aria-pressed="true"] p{color:var(--valvula)}
.dg svg{display:block}
@media (prefers-reduced-motion:reduce){.dg{transition:none}}

/* ---- piano ---- */
/* par visual de criarPiano() em componentes.js */
.piano-rolagem{overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.piano{position:relative;min-width:640px;height:150px;background:var(--jacaranda);
  border-radius:3px;box-shadow:inset 0 0 30px rgba(0,0,0,.5)}
.tecla{position:absolute;top:0;height:100%;border:0;padding:0;cursor:pointer}
.tecla.branca{background:var(--tinta);border-right:1px solid rgba(0,0,0,.3);
  border-radius:0 0 3px 3px;z-index:1}
.tecla.branca:hover{background:#fff}
.tecla.preta{height:62%;background:#1B1620;border-radius:0 0 2px 2px;z-index:2;
  box-shadow:0 3px 8px rgba(0,0,0,.5)}
.tecla.preta:hover{background:#332B3A}
.tecla .marca{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);
  width:22px;height:22px;border-radius:50%;background:transparent;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--dado);font-size:10px;font-weight:700;color:transparent;
  opacity:0;transition:background .2s ease,color .2s ease,opacity .2s ease,transform .2s ease}
.tecla.preta .marca{bottom:8px;width:18px;height:18px;font-size:9px}
.tecla.dentro .marca{opacity:1;background:#414F49;color:var(--tinta)}
.tecla.dentro.raiz .marca{background:var(--valvula);color:#16211F}
.tecla.dentro.terca .marca{background:var(--patina);color:#12201E}
.tecla.dentro.quinta .marca{background:var(--painel);color:#1B2422;box-shadow:0 0 0 1px rgba(0,0,0,.18)}
.tecla.dentro.setima .marca{background:var(--setima);color:#241A17}
.piano.focado .tecla.dentro .marca{opacity:.16;transform:translateX(-50%) scale(.82)}
.piano.focado .tecla.dentro.aceso .marca{opacity:1;transform:translateX(-50%) scale(1.05)}
.tecla.tocando .marca{transform:translateX(-50%) scale(1.3)!important;
  box-shadow:0 0 0 3px var(--valvula),0 0 16px rgba(216,53,42,.8)!important}
.tecla.soando .marca{box-shadow:0 0 0 3px var(--patina),0 0 12px rgba(111,168,160,.7)}

/* ---- mini-braço de ornamento (1 corda) ---- */
.mini-braco-container{display:flex;flex-direction:column;gap:10px;margin-top:8px}
.mini-braco{display:flex;background:var(--jacaranda);border-radius:4px;
  box-shadow:inset 0 0 24px rgba(0,0,0,.7),0 2px 8px rgba(0,0,0,.4);
  border:1px solid rgba(220,211,190,.16);position:relative;padding:8px 8px;
  overflow-x:auto;align-items:center}
.mini-braco::before{content:"";position:absolute;left:0;right:0;top:50%;height:3px;
  background:linear-gradient(180deg,#B9C2BC,#6E7A74);box-shadow:0 1px 3px rgba(0,0,0,.8);
  transform:translateY(-50%);pointer-events:none}
.mini-casa{position:relative;z-index:2;flex:1 1 56px;min-width:52px;height:64px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:inset -2px 0 0 var(--traste)}
.mini-casa:last-child{box-shadow:none}
.mini-ponto{width:32px;height:32px;border-radius:50%;display:flex;flex-direction:column;
  align-items:center;justify-content:center;font-family:var(--dado);font-size:11px;
  font-weight:700;border:0;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;
  z-index:3}
.mini-ponto:hover{transform:scale(1.12)}
.mini-ponto.base{background:var(--valvula);color:#16211F;
  box-shadow:0 0 0 2px #fff,0 0 14px rgba(216,53,42,.85)}
.mini-ponto.ornamento{background:var(--patina);color:#12201E;
  box-shadow:0 0 8px rgba(111,168,160,.6)}
.mini-ponto.tocando{transform:scale(1.32)!important;z-index:20!important;
  box-shadow:0 0 0 3px #FFFFFF,0 0 0 6px #FFD23F,0 0 22px 6px rgba(255,210,63,.95)!important;
  color:#FFFFFF!important}
.mini-casa-rotulo{font-family:var(--display);font-size:9px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--corda);margin-top:5px;white-space:nowrap}
.mini-casa.vazia .mini-traco{width:12px;height:2px;background:rgba(220,211,190,.16);
  border-radius:1px;margin:15px 0}
.mini-casa.vazia .mini-casa-rotulo{opacity:.35}
.mini-tocar-btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:600;
  background:rgba(220,211,190,.08);color:var(--valvula);border:1px solid rgba(216,53,42,.4);
  border-radius:3px;padding:6px 14px;cursor:pointer;
  transition:background .15s ease,border-color .15s ease,color .15s ease;width:fit-content}
.mini-tocar-btn:hover{background:var(--valvula);color:#16211F;border-color:var(--valvula)}
.mini-braco-acoes{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.mini-braco-dica{font-family:var(--display);font-size:11px;letter-spacing:.04em;color:var(--corda)}

/* ---- legenda do braço slonimsky ---- */
.legenda-slonimsky{display:flex;flex-wrap:wrap;gap:8px 22px;margin:10px 0 0}
.legenda-slonimsky span{font-family:var(--display);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--corda);display:flex;align-items:center;gap:8px}
.legenda-bolinha{width:12px;height:12px;border-radius:50%;display:inline-block}
.legenda-bolinha.base{background:var(--valvula);box-shadow:0 0 0 2px #fff,0 0 8px rgba(216,53,42,.8)}
.legenda-bolinha.ornamento{background:#414F49;border:1px solid var(--painel)}
.legenda-bolinha.tocando{background:#4A5B54;box-shadow:0 0 0 2px #FFFFFF,0 0 0 4px #FFD23F,0 0 10px rgba(255,210,63,.9);
  transform:scale(1.1)}