/* Site do Pianzo: as cores da marca (README → Identidade visual). */
:root {
  --fundo: #0E1014;
  --fundo-2: #151821;
  --cartao: #1A1E28;
  --linha: #262B37;
  --texto: #ECEEF2;
  --suave: #A3A9B6;
  --azul: #4C7DFF;
  --violeta: #8B4DFF;
  --azul-claro: #7FA8FF;
  --violeta-claro: #A47BFF;
  --ouro: #E5C46B;
  --verde: #3DDC97;
  --erro: #FFB454;
  --degrade: linear-gradient(135deg, var(--azul), var(--violeta));
  --raio: 20px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul-claro); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 12px; }

.largura { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .largura { padding: 0 32px; } }
.estreita { max-width: 800px; }
.degrade { background: var(--degrade); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* topo */
.topo {
  position: sticky; top: 0; z-index: 10;
  background: rgba(14, 16, 20, 0.82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--linha);
}
.topo-linha { display: flex; align-items: center; gap: 24px; height: 64px; }
.marca img { height: 26px; width: auto; }
.menu { display: none; gap: 24px; margin-left: auto; }
.menu a { color: var(--suave); text-decoration: none; font-size: 0.95rem; }
.menu a:hover { color: var(--texto); }
.topo .botao { margin-left: auto; }
@media (min-width: 820px) {
  .menu { display: flex; }
  .topo .botao { margin-left: 0; }
}

/* botões */
.botao {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border-radius: 999px; border: 0;
  background: var(--degrade); color: #fff; font: inherit; font-weight: 600;
  text-decoration: none; cursor: pointer;
  box-shadow: 0 8px 24px rgba(108, 100, 255, 0.28);
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.botao:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(108, 100, 255, 0.38); }
.botao:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--azul-claro); outline-offset: 2px;
}
.botao[disabled] { opacity: .6; cursor: wait; transform: none; }
.botao-pequeno { min-height: 40px; padding: 0 18px; font-size: 0.95rem; }
.botao-fantasma { background: transparent; border: 1px solid var(--linha); box-shadow: none; color: var(--texto); }
.botao-fantasma:hover { border-color: var(--suave); box-shadow: none; }
.botao-cheio { width: 100%; }

/* hero */
.hero {
  position: relative; overflow: hidden; padding: 56px 0 32px;
  background:
    radial-gradient(800px 480px at 0% 0%, rgba(76, 125, 255, 0.28), transparent 70%),
    radial-gradient(900px 600px at 100% 60%, rgba(139, 77, 255, 0.24), transparent 70%);
}
.hero-grade { display: grid; gap: 40px; align-items: center; }
@media (min-width: 960px) {
  .hero { padding: 88px 0 48px; }
  .hero-grade { grid-template-columns: 5fr 7fr; }
}
.hero h1 { font-size: clamp(2.3rem, 5.6vw, 3.8rem); margin-bottom: 20px; }
.lead { font-size: 1.15rem; color: var(--suave); max-width: 34em; }
.selo {
  display: inline-block; padding: 4px 12px; margin-bottom: 20px; border-radius: 999px;
  border: 1px solid rgba(229, 196, 107, 0.45); color: var(--ouro); font-size: 0.85rem; font-weight: 600;
}
.acoes { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.tela {
  margin: 0; border-radius: 22px; overflow: hidden; background: #000;
  border: 6px solid #22262f;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.06);
}
.tela-hero { transform: perspective(1600px) rotateY(-6deg) rotateX(2deg); }
@media (max-width: 959px) { .tela-hero { transform: none; } }

.numeros {
  list-style: none; margin-top: 56px; padding-top: 32px; padding-bottom: 8px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  border-top: 1px solid var(--linha);
}
@media (min-width: 820px) { .numeros { grid-template-columns: repeat(4, 1fr); } }
.numeros li { display: flex; flex-direction: column; }
.numeros strong { font-size: 2.2rem; line-height: 1.1; }
.numeros span { color: var(--suave); font-size: 0.95rem; }

/* seções */
.secao { padding: 72px 0; }
@media (min-width: 960px) { .secao { padding: 104px 0; } }
.sub { color: var(--suave); font-size: 1.1rem; max-width: 40em; margin-bottom: 40px; }
.etiqueta {
  color: var(--violeta-claro); font-weight: 700; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px;
}

.cartoes { display: grid; gap: 16px; }
@media (min-width: 640px) { .cartoes { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .cartoes { grid-template-columns: repeat(3, 1fr); gap: 20px; } }
.cartao {
  background: var(--cartao); border: 1px solid var(--linha); border-radius: var(--raio); padding: 24px;
}
.cartao p { color: var(--suave); margin: 0; }
.icone {
  display: inline-grid; place-items: center; width: 48px; height: 48px; margin-bottom: 16px;
  border-radius: 14px; font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(76, 125, 255, 0.22), rgba(139, 77, 255, 0.22));
}
.icone.grande { width: 72px; height: 72px; font-size: 2.2rem; border-radius: 20px; }

/* vitrine */
.vitrine { background: var(--fundo-2); }
.linha { display: grid; gap: 28px; align-items: center; }
.linha + .linha { margin-top: 72px; }
.linha-texto p:not(.etiqueta) { color: var(--suave); font-size: 1.05rem; }
@media (min-width: 960px) {
  .linha { grid-template-columns: 4fr 7fr; gap: 56px; }
  .linha.invertida { grid-template-columns: 7fr 4fr; }
  .linha.invertida .linha-texto { order: 2; }
  .linha + .linha { margin-top: 104px; }
}

/* testadores */
.testar {
  background:
    radial-gradient(700px 420px at 100% 0%, rgba(139, 77, 255, 0.22), transparent 70%),
    radial-gradient(700px 420px at 0% 100%, rgba(76, 125, 255, 0.18), transparent 70%);
  border-top: 1px solid var(--linha); border-bottom: 1px solid var(--linha);
}
.testar-grade { display: grid; gap: 40px; align-items: start; }
@media (min-width: 960px) { .testar-grade { grid-template-columns: 5fr 6fr; gap: 64px; } }
.testar-texto > p { color: var(--suave); font-size: 1.05rem; }
.passos { padding: 0; margin: 24px 0; list-style: none; counter-reset: passo; }
.passos li { counter-increment: passo; position: relative; padding-left: 48px; margin-bottom: 16px; color: var(--suave); }
.passos li strong { color: var(--texto); }
.passos li::before {
  content: counter(passo); position: absolute; left: 0; top: -2px;
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--degrade); color: #fff; font-weight: 700; font-size: 0.9rem;
}
.nota { color: var(--suave); font-size: 0.95rem; }

.formulario {
  background: var(--cartao); border: 1px solid var(--linha); border-radius: 24px;
  padding: 24px; box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35);
}
@media (min-width: 720px) { .formulario { padding: 32px; } }
.campo { margin-bottom: 18px; }
.campo label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.95rem; }
.campo small { display: block; color: var(--suave); font-size: 0.85rem; margin-top: 6px; }
.opcional { color: var(--suave); font-weight: 400; }
input, select, textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--texto);
  background: var(--fundo); border: 1px solid var(--linha); border-radius: 12px;
  padding: 12px 14px; min-height: 48px;
}
textarea { resize: vertical; min-height: 96px; }
select { appearance: none; -webkit-appearance: none; padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--suave) 50%), linear-gradient(135deg, var(--suave) 50%, transparent 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
input::placeholder, textarea::placeholder { color: #6B7180; }
[aria-invalid="true"] { border-color: var(--erro); }
.aceite { display: flex; gap: 12px; align-items: flex-start; margin: 4px 0 20px; color: var(--suave); font-size: 0.92rem; }
.aceite input { width: 20px; height: 20px; min-height: 0; margin: 3px 0 0; flex: none; accent-color: var(--azul); }
.armadilha { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.status { margin: 14px 0 0; min-height: 1.6em; font-size: 0.95rem; }
.status.erro { color: var(--erro); }
.pronto { text-align: center; }
.pronto p { color: var(--suave); }
.pronto strong { color: var(--texto); word-break: break-all; }

/* perguntas */
details { border-bottom: 1px solid var(--linha); }
details:first-of-type { border-top: 1px solid var(--linha); margin-top: 32px; }
summary {
  cursor: pointer; list-style: none; padding: 20px 40px 20px 0; position: relative;
  font-weight: 600; font-size: 1.08rem;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 400; color: var(--suave);
}
details[open] summary::after { content: "–"; }
details p { color: var(--suave); padding-bottom: 20px; margin: 0; }

/* rodapé */
.rodape { padding: 40px 0; border-top: 1px solid var(--linha); color: var(--suave); font-size: 0.92rem; }
.rodape-linha { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; }
.rodape nav { display: flex; gap: 24px; }
.rodape a { color: var(--suave); }
.rodape p { margin: 0; margin-left: auto; }
@media (max-width: 559px) { .rodape p { margin-left: 0; width: 100%; } }