/* ----- Variáveis ----- */
:root {
  --cor-fundo: #090d16;
  --cor-fundo-cartao: rgba(22, 30, 46, 0.6);
  --cor-fundo-hover: rgba(30, 41, 64, 0.8);
  --cor-borda: rgba(255, 255, 255, 0.08);
  --cor-borda-destaque: rgba(96, 165, 250, 0.3);
  --cor-texto: #f1f5f9;
  --cor-texto-suave: #94a3b8;
  --cor-destaque: #3b82f6;
  --cor-destaque-hover: #60a5fa;
  --cor-roxo-acento: #a855f7;
  --cor-ciano-acento: #06b6d4;
  --cor-sucesso: #4ade80;
  --largura-maxima: 1100px;
}

/* ----- Reset ----- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--cor-fundo);
  color: var(--cor-texto);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ----- Elementos de Iluminação de Fundo ----- */
.luz-ambiente {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.luz-1 {
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, rgba(168, 85, 247, 0.08) 60%, transparent 100%);
}

.luz-2 {
  top: 600px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
}

/* ----- Base ----- */
.container {
  max-width: var(--largura-maxima);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ----- Cabeçalho ----- */
.topo {
  position: sticky;
  top: 0;
  background: rgba(9, 13, 22, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--cor-borda);
  z-index: 100;
}

.cabeçalho-conteudo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.marca {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cor-texto);
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
}

.marca-icone {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--cor-destaque), var(--cor-roxo-acento));
  border-radius: 10px;
  color: #fff;
  font-size: 1.1rem;
  font-weight: bold;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.menu-navegacao {
  display: flex;
  gap: 28px;
  align-items: center;
}

.menu-navegacao a {
  color: var(--cor-texto-suave);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.menu-navegacao a:hover {
  color: var(--cor-texto);
}

.link-github {
  background: rgba(255, 255, 255, 0.05);
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--cor-borda);
}

.link-github:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ----- Botões ----- */
.botao {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.botao-principal {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 20px -2px rgba(59, 130, 246, 0.5);
}

.botao-principal:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -2px rgba(59, 130, 246, 0.7);
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
}

.botao-secundario {
  background: rgba(30, 41, 64, 0.5);
  border: 1px solid var(--cor-borda);
  color: var(--cor-texto);
  backdrop-filter: blur(8px);
}

.botao-secundario:hover {
  transform: translateY(-2px);
  background: rgba(30, 41, 64, 0.8);
  border-color: var(--cor-destaque-hover);
}

/* ----- Destaque / Hero ----- */
.heroi {
  text-align: center;
  padding: 80px 0 40px;
}

.emblema {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--cor-destaque-hover);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.ponto-brilho {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--cor-sucesso);
  box-shadow: 0 0 10px var(--cor-sucesso);
  animation: pulso 2s infinite;
}

@keyframes pulso {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.titulo-heroi {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.texto-gradiente {
  background: linear-gradient(135deg, #60a5fa 0%, #c084fc 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitulo {
  color: var(--cor-texto-suave);
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto 36px;
}

.botoes-download {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.recursos-rapidos {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--cor-texto-suave);
  font-size: 0.85rem;
  margin-bottom: 56px;
}

.recursos-rapidos span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.recursos-rapidos svg {
  color: var(--cor-sucesso);
}

/* ----- Visual Mockup do App ----- */
.container-mockup {
  max-width: 800px;
  margin: 0 auto;
  perspective: 1000px;
}

.janela-mockup {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7), 0 0 30px rgba(59, 130, 246, 0.15);
  overflow: hidden;
  text-align: left;
  animation: flutuar 6s ease-in-out infinite;
}

@keyframes flutuar {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.barra-janela {
  background: rgba(30, 41, 59, 0.6);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--cor-borda);
}

.botoes-janela {
  display: flex;
  gap: 8px;
}

.botoes-janela span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.fechar { background-color: #ef4444; }
.minimizar { background-color: #f59e0b; }
.expandir { background-color: #10b981; }

.titulo-janela {
  margin-left: 16px;
  font-size: 0.8rem;
  color: var(--cor-texto-suave);
  flex-grow: 1;
}

.status-overlay {
  font-size: 0.75rem;
  color: var(--cor-sucesso);
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.1);
  padding: 4px 10px;
  border-radius: 12px;
}

.indicador-ativo {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--cor-sucesso);
}

.corpo-janela {
  padding: 32px;
  background: radial-gradient(circle at 50% 50%, rgba(30, 41, 59, 0.4), rgba(15, 23, 42, 0.8));
  position: relative;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 24px;
}

.fundo-jogo-simulado {
  background: rgba(2, 6, 23, 0.7);
  border: 1px dashed rgba(96, 165, 250, 0.4);
  border-radius: 12px;
  padding: 20px;
  position: relative;
}

.linha-texto-jogo {
  font-size: 1.1rem;
  color: #e2e8f0;
  margin: 0;
}

.destaque-hanzi-tela {
  background: rgba(59, 130, 246, 0.25);
  border: 1px solid var(--cor-destaque);
  padding: 2px 6px;
  border-radius: 4px;
  color: #60a5fa;
  font-weight: bold;
}

.caixa-selecao-ocr {
  position: absolute;
  top: -10px;
  right: -10px;
  background: var(--cor-destaque);
  color: #fff;
  font-size: 0.65rem;
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 4px;
}

.cartao-popover-simulado {
  background: rgba(30, 41, 59, 0.95);
  border: 1px solid var(--cor-borda-destaque);
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  min-width: 260px;
}

.cabecalho-popover {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
}

.hanzi-grande {
  font-size: 2.4rem;
  font-weight: bold;
  color: #fff;
  background: linear-gradient(135deg, var(--cor-destaque), var(--cor-roxo-acento));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.linha-pinyin {
  display: flex;
  gap: 8px;
  align-items: center;
}

.pinyin-texto {
  font-weight: bold;
  color: var(--cor-destaque-hover);
  font-size: 1.1rem;
}

.etiqueta-hsk {
  background: rgba(168, 85, 247, 0.2);
  color: #c084fc;
  font-size: 0.7rem;
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 4px;
}

.significado-curto {
  font-size: 0.8rem;
  color: var(--cor-texto-suave);
  margin-top: 4px;
}

.detalhes-popover {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid var(--cor-borda);
  padding-top: 10px;
}

.tag-detalhe {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--cor-texto-suave);
  padding: 3px 8px;
  border-radius: 6px;
}

.tom-sucesso {
  color: var(--cor-sucesso);
  background: rgba(74, 222, 128, 0.1);
}

/* ----- Seções Genéricas ----- */
.cabecalho-secao {
  text-align: center;
  margin-bottom: 48px;
}

.subtitulo-secao {
  color: var(--cor-destaque-hover);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.cabecalho-secao h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-top: 8px;
}

/* ----- Funcionalidades ----- */
#funcionalidades {
  padding: 90px 0;
}

.grade-funcionalidades {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.cartao-funcionalidade {
  background: var(--cor-fundo-cartao);
  border: 1px solid var(--cor-borda);
  border-radius: 16px;
  padding: 28px;
  transition: all 0.3s ease;
  backdrop-filter: blur(12px);
}

.cartao-funcionalidade:hover {
  transform: translateY(-4px);
  background: var(--cor-fundo-hover);
  border-color: var(--cor-borda-destaque);
  box-shadow: 0 12px 30px -10px rgba(59, 130, 246, 0.25);
}

.icone-container {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(168, 85, 247, 0.15));
  border: 1px solid rgba(96, 165, 250, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cor-destaque-hover);
  margin-bottom: 20px;
}

.cartao-funcionalidade h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--cor-texto);
}

.cartao-funcionalidade p {
  color: var(--cor-texto-suave);
  font-size: 0.95rem;
  margin: 0;
}

/* ----- Lista de extras ----- */
.lista-extras {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 48px;
  padding: 0;
}

.lista-extras li {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--cor-borda);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: var(--cor-texto-suave);
  font-size: 0.95rem;
}

.icone-check {
  color: var(--cor-destaque-hover);
  flex-shrink: 0;
  margin-top: 3px;
}

.lista-extras strong {
  color: var(--cor-texto);
}

/* ----- Passos ----- */
#como-comecar {
  padding: 90px 0;
}

.passos {
  list-style: none;
  max-width: 800px;
  margin: 0 auto 48px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cartao-passo {
  background: var(--cor-fundo-cartao);
  border: 1px solid var(--cor-borda);
  border-radius: 16px;
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: border-color 0.2s ease;
}

.cartao-passo:hover {
  border-color: var(--cor-borda-destaque);
}

.numero-passo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cor-destaque), var(--cor-roxo-acento));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
}

.conteudo-passo strong {
  font-size: 1.15rem;
  color: var(--cor-texto);
  display: block;
  margin-bottom: 4px;
}

.conteudo-passo p {
  color: var(--cor-texto-suave);
  margin: 0;
  font-size: 0.95rem;
}

.chamada-download {
  text-align: center;
}

/* ----- Rodapé ----- */
.rodape {
  border-top: 1px solid var(--cor-borda);
  padding: 40px 0;
  background: rgba(9, 13, 22, 0.9);
}

.conteudo-rodape {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.marca-rodape {
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-rodape {
  color: var(--cor-texto-suave);
  font-size: 0.9rem;
  margin: 0;
}

.info-rodape a {
  color: var(--cor-destaque-hover);
  text-decoration: none;
}

.ano-rodape {
  color: var(--cor-texto-suave);
  font-size: 0.9rem;
}

/* ----- Responsivo ----- */
@media (max-width: 640px) {
  .menu-navegacao {
    display: none;
  }

  .botoes-download {
    flex-direction: column;
  }

  .botoes-download .botao {
    width: 100%;
  }

  .heroi {
    padding: 50px 0 30px;
  }

  .corpo-janela {
    padding: 16px;
  }

  .cartao-passo {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .conteudo-rodape {
    flex-direction: column;
    text-align: center;
  }
}