:root {
  --bg: #080d18;
  --surface: #0f1623;
  --surface2: #111827;
  --border: #1e2a3a;
  --text: #e8f0fe;
  --muted: #4a6080;
  --accent: #3b82f6;
  --key-bg: #141e2e;
  --wave-target: #3b82f6;
  --wave-last: #f472b6;
  --wave-old: #2a3a50;
  --wave-win: #10b981;
}
* { margin:0; padding:0; box-sizing:border-box; }
body {
  background:var(--bg); color:var(--text);
  font-family:'Space Grotesk',sans-serif;
  height:100dvh; overflow:hidden; display:flex; flex-direction:column; align-items:center;
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
}
button { touch-action:manipulation; }

/* ── Header ── */
header {
  width:100%; max-width:560px;
  padding:14px 20px 10px;
  display:flex; align-items:center; justify-content:space-between;
  border-bottom:1px solid var(--border); flex-shrink:0;
}
.logo {
  font-family:'DM Sans',sans-serif; font-size:1.3rem; font-weight:800;
  background:linear-gradient(90deg,#60a5fa,#a78bfa,#f472b6);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.logo small {
  display:block; font-size:.6rem; letter-spacing:2px; text-transform:uppercase;
  color:var(--muted); -webkit-text-fill-color:var(--muted); margin-top:-2px;
}
.logo-compact {
  display:none; font-size:1.4rem; line-height:1;
  -webkit-text-fill-color:initial;
}
@media (max-width:400px) {
  .logo-name, .logo small { display:none; }
  .logo-compact { display:inline; }
}
.header-btns { display:flex; gap:8px; }
.hbtn {
  background:var(--key-bg); border:1px solid var(--border); color:var(--muted);
  width:34px; height:34px; border-radius:8px; cursor:pointer;
  font-size:1rem; display:grid; place-items:center; transition:color .2s, border-color .2s;
}
.hbtn:hover { color:var(--text); border-color:var(--muted); }

/* ── Badge de modo ── */
.badge-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
}

.badge-modo {
  font-size:.63rem; letter-spacing:1.5px; text-transform:uppercase;
  padding:3px 12px; border-radius:30px; font-weight:700;
  border:1px solid var(--border); color:var(--muted); background:var(--surface2);
  display: flex;
  align-items: center;
  height: 28px;
}
.badge-modo.diario { color:#60a5fa; border-color:#1e3a5f; background:#0a1628; }
.badge-modo.livre  { color:#a78bfa; border-color:#2d1f5e; background:#0e0a1e; }
.badge-modo.livrissimo { color:#e879f9; border-color:#4a1259; background:#1a0520; }

/* ── Toast ── */
#toast {
  position:fixed; top:68px; left:50%;
  transform:translateX(-50%) translateY(-10px);
  background:var(--text); color:var(--bg);
  padding:8px 20px; border-radius:30px; font-weight:700; font-size:.82rem;
  opacity:0; transition:all .25s; z-index:999; pointer-events:none; white-space:nowrap;
}
#toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* ── Main layout ── */
main {
  width:100%; max-width:560px; padding:8px 14px 0;
  display:flex; flex-direction:column; gap:8px; flex:1; overflow:hidden;
}

/* ── Wave card ── */
.wave-card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:14px; padding:10px 14px 8px; flex-shrink:0;
}
.wave-legend {
  display:flex; gap:14px; margin-bottom:6px;
  font-size:.66rem; letter-spacing:1px; text-transform:uppercase; color:var(--muted);
}
.wave-legend span { display:flex; align-items:center; gap:5px; }
.ldot { width:18px; height:3px; border-radius:2px; }
#canvasPrincipal { display:block; width:100%; border-radius:6px; }

/* ── Histórico ── */
#historicoWrap { position:relative; flex:1; min-height:0; overflow:hidden; }
#listaHistorico { display:flex; flex-direction:column; gap:5px; height:100%; overflow-y:auto; scrollbar-width:none; padding-bottom:2px; }
#listaHistorico::-webkit-scrollbar { display:none; }
#historicoFade { position:absolute; bottom:0; left:0; right:0; height:48px; background:linear-gradient(transparent,var(--bg)); display:flex; align-items:flex-end; justify-content:center; padding-bottom:4px; color:var(--muted); font-size:.75rem; pointer-events:none; transition:opacity .2s; }
.h-placeholder { height:72px; flex-shrink:0; border:1px solid var(--border); border-radius:10px; opacity:0.5; }
.h-item {
  display:flex; align-items:center; gap:8px;
  background: color-mix(in srgb, var(--muted) 4%, var(--surface));
  border:1px solid color-mix(in srgb, var(--muted) 20%, var(--border));
  border-radius:10px; padding:5px 10px;
  cursor:pointer; transition:border-color .2s, background .2s, opacity .2s;
  animation:fadeSlide .22s ease; user-select:none;
  height:72px; flex-shrink:0; overflow:hidden;
  opacity: 0.65;
}
.h-item:hover { border-color: color-mix(in srgb, var(--muted) 40%, var(--muted)); opacity: 0.8; }
.h-item.ativo {
  background: color-mix(in srgb, var(--c) 12%, var(--surface));
  border-color: color-mix(in srgb, var(--c) 35%, var(--border));
  opacity: 1;
}
@keyframes fadeSlide { from{opacity:0;transform:translateY(4px)} to{opacity:1;transform:none} }
.h-palavra {
  font-family:'DM Sans',sans-serif; font-size:.93rem; font-weight:700;
  letter-spacing:3px; text-transform:uppercase; color:var(--text);
  flex-shrink:0;
}
.h-palavra.ganhou { color:#10b981; }
.h-mini { flex:1; min-width:0; align-self:stretch; display:block; height:auto; }
.h-delta { font-size:.75rem; color:var(--c); font-variant-numeric:tabular-nums; opacity:0.8; margin-top:1px; }
.h-penalizado { cursor:default; }
.h-penalizado-palavra { text-decoration:line-through; color:var(--muted); }
.h-penalizado-delta { color:var(--muted); opacity:0.6; }

/* ── Input card (grade + teclado) ── */
.input-card {
  background:var(--surface); border:1px solid var(--border);
  border-radius:14px; padding:10px 12px calc(12px + env(safe-area-inset-bottom)); flex-shrink:0;
}
.grade { display:flex; gap:5px; justify-content:center; margin-bottom:10px; }
.letra {
  width:48px; height:50px; background:var(--bg);
  border:2px solid var(--border); border-radius:9px;
  display:flex; align-items:center; justify-content:center;
  font-family:'DM Sans',sans-serif; font-size:1.35rem; font-weight:800;
  text-transform:uppercase; color:var(--text); cursor:pointer; position:relative;
  transition:border-color .15s, box-shadow .15s;
}
.letra.focada { border-color:var(--accent); box-shadow:0 0 0 2px rgba(59,130,246,.2); }
.letra.preenchida  { border-color:#253345; }
.letra.focada.preenchida { border-color:var(--accent); }
.letra.focada::after {
  content:''; display:block; width:2px; height:55%;
  background:var(--accent); position:absolute; animation:blink 1s step-end infinite;
}
.letra.preenchida.focada::after { display:none; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
@keyframes pop   { 0%{transform:scale(1)} 50%{transform:scale(1.1)} 100%{transform:scale(1)} }
@keyframes shk   {
  0%,100%{transform:translateX(0)} 20%{transform:translateX(-7px)}
  40%{transform:translateX(7px)}  60%{transform:translateX(-5px)} 80%{transform:translateX(5px)}
}
.letra.pop { animation:pop .12s ease; }
.letra.hint { color: rgba(255,255,255,0.18); }

/* ── Teclado ── */
.teclado { display:flex; flex-direction:column; gap:4px; }
.teclado-linha { display:flex; justify-content:center; gap:3px; }
.tecla {
  height:46px; flex:1; max-width:38px;
  background:var(--key-bg); border:1px solid var(--border);
  border-radius:7px; color:var(--text);
  font-family:'Space Grotesk',sans-serif; font-size:.84rem; font-weight:700;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  text-transform:uppercase; transition:background .15s, transform .1s;
}
.tecla.larga { max-width:56px; font-size:.67rem; }
.tecla:active { transform:scale(.91); }

/* ── Overlays e modais ── */
.overlay {
  position:fixed; inset:0; background:rgba(0,0,0,.82);
  backdrop-filter:blur(8px); z-index:300;
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition:opacity .3s;
}
.overlay.aberto { opacity:1; pointer-events:all; }
.modal {
  background:var(--surface); border:1px solid var(--border);
  border-radius:18px; padding:26px 22px; max-width:440px; width:96%;
  transform:translateY(14px); transition:transform .3s; position:relative;
}
.overlay.aberto .modal { transform:none; }
.modal h2 {
  font-family:'DM Sans',sans-serif; font-size:1.15rem; font-weight:800; margin-bottom:12px;
  background:linear-gradient(90deg,#60a5fa,#a78bfa);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.modal p { color:var(--muted); line-height:1.75; font-size:.86rem; margin-bottom:9px; }
.modal strong { color:var(--text); }
.mbtn {
  margin-top:14px; width:100%; padding:11px;
  background:linear-gradient(90deg,#3b82f6,#8b5cf6); border:none; border-radius:11px;
  color:#fff; font-family:'DM Sans',sans-serif; font-weight:700; font-size:.92rem;
  cursor:pointer; transition:opacity .2s;
}
.mbtn:hover { opacity:.85; }
.mbtn.sec {
  background:transparent; border:1px solid var(--border); color:var(--muted); margin-top:7px;
  font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:.86rem;
}
.mbtn.sec:hover { border-color:var(--muted); color:var(--text); }
.mbtn.livre-btn { background:linear-gradient(90deg,#7c3aed,#4f46e5); }
.modal-fechar {
  position:absolute; top:12px; right:12px;
  background:none; border:none; color:var(--muted);
  font-size:1.2rem; cursor:pointer; padding:4px;
  border-radius:6px; transition:color .2s, background .2s;
  display:flex; align-items:center; justify-content:center;
  width:28px; height:28px;
}
.modal-fechar:hover { color:var(--text); background:var(--surface2); }

/* ── Seletor de desafios ── */
.grid-wrap { position:relative; max-height:260px; overflow:hidden; margin:12px 0; }
#gridDesafios { display:grid; grid-template-columns:repeat(auto-fill,34px); justify-content:center; gap:4px; padding:4px 2px 24px; overflow-y:auto; scrollbar-width:none; max-height:260px; }
#gridDesafios::-webkit-scrollbar { display:none; }
.grid-fade { position:absolute; bottom:0; left:0; right:0; height:48px; background:linear-gradient(transparent,var(--surface)); display:flex; align-items:flex-end; justify-content:center; padding-bottom:4px; color:var(--muted); font-size:.75rem; pointer-events:none; transition:opacity .2s; }
.celula-desafio {
  width:34px; height:34px; display:flex; align-items:center; justify-content:center;
  background:var(--key-bg); border:1px solid var(--border); border-radius:4px;
  font-size:.78rem; font-weight:600; cursor:pointer; transition:all .2s;
  color:var(--text); overflow:hidden;
}
.celula-desafio:hover { border-color: var(--muted); }
.celula-desafio.concluido { background:#10b981; color:white; border-color:#059669; cursor:default; }
.celula-desafio.falhou    { background:#ef4444; color:white; border-color:#dc2626; cursor:default; }
.celula-desafio.concluido:hover { background:#10b981; border-color:#059669; }
.celula-desafio.falhou:hover    { background:#ef4444; border-color:#dc2626; }

/* ── Badge do header (streak / progresso) ── */
.streak-box {
  display:inline-flex; align-items:center; gap:6px;
  white-space:nowrap;
  background:var(--key-bg); border:1px solid var(--border);
  border-radius:8px; padding:6px 12px;
  font-size:.75rem; color:var(--text);
  transition:border-color .2s, background .2s;
}
.streak-box:hover {
  border-color:var(--muted); background:color-mix(in srgb, var(--key-bg) 85%, var(--muted));
}
.streak-icone { font-size:.9rem; line-height:1; }
.streak-texto { font-weight:600; letter-spacing:.5px; }

/* ── Contador de tempo ── */
.tempo-contador {
  display: flex;
  align-items: center; 
  gap: 6px;
  white-space: nowrap;
  background: var(--key-bg); 
  border: 1px solid var(--border);
  border-radius: 8px; 
  padding: 6px 12px;
  font-size: .75rem; 
  color: var(--text);
  transition: border-color .2s, background .2s;
  height: 28px;
  width: 80px;
}
.tempo-icone { font-size:.9rem; line-height:1; }
.tempo-texto { 
  font-weight:600; 
  letter-spacing:.5px; 
  width: 32px;
  text-align: center;
}

/* ── Modal de resultado ── */
.res-titulo { font-size:.78rem; color:var(--muted); text-align:center; margin-bottom:12px; }
.res-extrato-content {
  margin: 12px 0 6px 0;
  font-size: 0.85rem;
}
.extrato-pontuacao-simples {
  font-size: 0.85rem;
}
.extrato-linha {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
}
.extrato-descricao {
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 400;
}
.extrato-palavra {
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text);
}
.extrato-linha.base {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.extrato-linha.final {
  padding: 12px 0 4px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}
.extrato-valor {
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
}
.extrato-valor.negativo {
  color: #ef4444;
}
.extrato-valor.positivo {
  color: #10b981;
}
.extrato-final-label {
  font-weight: 700;
  color: var(--text);
}
.extrato-final-valor {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
}
.memoria-calculo {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 400;
}
.extrato-valor.neutro {
  opacity: 0;
}
.extrato-divisor {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}
.res-label { font-size:.7rem; color:var(--muted); text-align:center; margin-bottom:2px; margin-top:6px; }
.res-palavra {
  font-family:'DM Sans',sans-serif; font-size:1.6rem; font-weight:800;
  letter-spacing:5px; text-align:center; margin-bottom:10px; color:#10b981;
}
.res-palavra.perdeu { color:var(--muted); }
.pontos-row { 
  display:flex; 
  gap:7px; 
  justify-content:center; 
  align-items: center; 
  margin:8px 0 14px; 
}
.ponto-emoji {
  font-size: 20px;
  line-height: 1;
}
.divisor { height:1px; background:var(--border); margin:10px 0; }
.proximo-lbl { text-align:center; font-size:.66rem; letter-spacing:2px; text-transform:uppercase; color:var(--muted); margin-bottom:3px; }
.contagem-regressiva { text-align:center; font-family:'DM Sans',sans-serif; font-size:1.5rem; font-weight:800; letter-spacing:3px; margin-bottom:8px; }

/* ── Modal de configurações ── */
.modal-config { max-height:calc(100dvh - 40px); overflow:hidden; }
.cfg-wrap { position:relative; overflow:hidden; margin:0 -2px; }
.cfg-scroll { overflow-y:auto; scrollbar-width:none; max-height:calc(100dvh - 210px); padding:0 2px 24px; }
.cfg-scroll::-webkit-scrollbar { display:none; }
.cfg-fade { position:absolute; bottom:0; left:0; right:0; height:48px; background:linear-gradient(transparent,var(--surface)); display:flex; align-items:flex-end; justify-content:center; padding-bottom:4px; color:var(--muted); font-size:.75rem; pointer-events:none; transition:opacity .2s; }
.cfg-secao { border-top:1px solid var(--border); margin-top:14px; padding-top:10px; }
.cfg-secao:first-of-type { border-top:none; margin-top:0; padding-top:0; }
.cfg-titulo { font-size:.65rem; letter-spacing:2px; text-transform:uppercase; color:var(--muted); margin-bottom:8px; }
.cfg-item { display:flex; align-items:center; justify-content:space-between; gap:8px; padding:5px 0; }
.cfg-label-grupo { display:flex; align-items:center; gap:5px; flex:1; }
.cfg-label-grupo label { font-size:.84rem; color:var(--text); }
.cfg-ajuda-btn { background:none; border:none; color:var(--muted); font-size:.68rem; font-family:'Space Grotesk',sans-serif; cursor:pointer; padding:1px 3px; opacity:0.5; transition:opacity .15s; flex-shrink:0; line-height:1; }
.cfg-ajuda-btn:hover { opacity:1; }
.cfg-ajuda-texto { max-height:0; overflow:hidden; font-size:.78rem; color:var(--muted); line-height:1.55; transition:max-height .25s ease, padding .25s ease; padding:0; }
.cfg-ajuda-texto.aberto { max-height:200px; padding:4px 0 8px; }
.cfg-ciclo {
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25);
  color: var(--accent);
  border-radius: 7px;
  padding: 5px 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  width: 110px;
  text-align: center;
  transition: background .15s, color .15s, border-color .15s;
}
.cfg-ciclo { position: relative; }
.cfg-ciclo::before { content: '‹'; position: absolute; left: 8px; top: 50%; transform: translateY(-50%); opacity: 0.45; font-weight: 400; }
.cfg-ciclo::after  { content: '›'; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); opacity: 0.45; font-weight: 400; }
.cfg-ciclo:hover  { background: rgba(59,130,246,0.22); }
.cfg-ciclo:active { background: rgba(59,130,246,0.35); }
.cfg-ciclo.modificado {
  color: #fbbf24;
  border-color: rgba(251,191,36,0.3);
  background: rgba(251,191,36,0.08);
}
.cfg-ciclo.modificado:hover { background: rgba(251,191,36,0.16); }

/* letra fixada (fixarLetrasAcertadas) */
.letra.fixada { border-color:#10b981; color:#10b981; }
.letra.revelada-erro { border-color:#ef4444; color:#ef4444; }

/* ── Modal de ajuda ── */
.modal-ajuda { max-height:calc(100dvh - 40px); overflow:hidden; }
.ajuda-wrap { position:relative; overflow:hidden; margin:0 -2px; }
.ajuda-scroll { overflow-y:auto; scrollbar-width:none; max-height:calc(100dvh - 210px); padding:0 2px 24px; }
.ajuda-scroll::-webkit-scrollbar { display:none; }
.ajuda-fade { position:absolute; bottom:0; left:0; right:0; height:48px; background:linear-gradient(transparent,var(--surface)); display:flex; align-items:flex-end; justify-content:center; padding-bottom:4px; color:var(--muted); font-size:.75rem; pointer-events:none; transition:opacity .2s; }
.ajuda-bloco { border-top:1px solid var(--border); padding-top:11px; margin-top:11px; }
.ajuda-bloco:first-of-type { border-top:none; margin-top:0; padding-top:0; }
.ajuda-titulo { font-size:.65rem; letter-spacing:2px; text-transform:uppercase; color:var(--muted); margin-bottom:7px; }
.ajuda-escala { display:flex; align-items:center; gap:8px; margin-top:10px; }
.ae-ponto { display:flex; flex-direction:column; align-items:center; gap:2px; flex-shrink:0; }
.ae-letra { font-family:'DM Sans',sans-serif; font-weight:800; font-size:1rem; color:var(--text); line-height:1; }
.ae-num { font-size:.68rem; color:var(--muted); }
.ae-trilha { flex:1; height:3px; background:var(--border); border-radius:2px; overflow:hidden; }
.ae-fill { height:100%; background:linear-gradient(90deg,#3b82f6,#8b5cf6); border-radius:2px; }
.ajuda-wave-box { background:var(--surface2); border:1px solid var(--border); border-radius:10px; padding:8px 8px 4px; margin-top:8px; }
.ajuda-svg { width:100%; display:block; }
.ajuda-wave-word { text-align:center; font-family:'DM Sans',sans-serif; font-weight:800; letter-spacing:6px; font-size:.72rem; color:var(--muted); padding-bottom:3px; }
.ajuda-par { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-top:10px; }
.ajuda-ex { background:var(--surface2); border:1px solid var(--border); border-radius:10px; padding:7px 6px 5px; }
.ajuda-ex-lbl { font-size:.64rem; color:var(--muted); text-align:center; margin-bottom:4px; letter-spacing:.3px; }
.ajuda-azul { color:#60a5fa; font-weight:600; }
.ajuda-dicas { list-style:none; display:flex; flex-direction:column; gap:5px; margin-top:6px; }
.ajuda-dicas li { font-size:.82rem; color:var(--muted); padding-left:16px; position:relative; line-height:1.55; }
.ajuda-subtitulo { font-size:.72rem; font-weight:700; color:var(--text); margin:12px 0 6px; letter-spacing:.5px; }
.ajuda-formula { background:var(--surface2); border:1px solid var(--border); border-radius:8px; padding:10px; margin:8px 0; text-align:center; font-family:'Space Grotesk',monospace; }
.ajuda-exemplo { background:var(--surface2); border:1px solid var(--border); border-radius:8px; padding:8px; margin:6px 0; font-family:'Space Grotesk',monospace; font-size:.8rem; text-align:center; }
.ajuda-dicas li::before { content:'›'; position:absolute; left:2px; color:var(--accent); font-size:1rem; line-height:1.3; }

/* ── Rodapé de dois botões nos modais ── */
.modal-btns { display:flex; gap:8px; margin-top:14px; }
.modal-btns .mbtn { margin-top:0; flex:1; }
.mbtn:disabled { opacity:0.35; cursor:not-allowed; }

/* ── Modo Livríssimo ── */
.grid-secao { grid-column:1/-1; font-size:.62rem; letter-spacing:2px; text-transform:uppercase; color:var(--muted); padding:10px 2px 4px; text-align:center; }
.celula-desafio.trancada { opacity:0.25; cursor:not-allowed; }
.celula-desafio.selecionado { background:rgba(59,130,246,0.2); border-color:#3b82f6; color:#60a5fa; }