:root {
  --bg: #f4f5f7;
  --cartao-bg: #ffffff;
  --texto: #1c1e21;
  --texto-suave: #6b7280;
  --borda: #e2e4e9;
  --accent: #1f6feb;
  --accent-suave: #eaf1ff;
  --verde: #16794f;
  --vermelho: #b3261e;
  --sombra: 0 1px 3px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --cartao-bg: #1d2026;
    --texto: #eceef1;
    --texto-suave: #9aa0aa;
    --borda: #2c303a;
    --accent: #4c8dff;
    --accent-suave: #1c2a42;
    --verde: #4fce8f;
    --vermelho: #ff6b64;
    --sombra: 0 1px 3px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--texto);
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.topo { text-align: center; margin-bottom: 28px; }
.topo h1 { font-size: 1.6rem; margin: 0 0 8px; }
.subtitulo { color: var(--texto-suave); margin: 0; font-size: 0.95rem; }

.logo {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto 18px;
  padding: 16px 24px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: var(--sombra);
  object-fit: contain;
}

.cartao {
  background: var(--cartao-bg);
  border: 1px solid var(--borda);
  border-radius: 16px;
  box-shadow: var(--sombra);
  padding: 24px;
  margin-bottom: 20px;
}

.campo { margin-bottom: 20px; }
.campo > label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.obrigatorio { color: var(--vermelho); font-weight: 500; font-size: 0.78rem; }
.opcional { color: var(--texto-suave); font-weight: 500; font-size: 0.78rem; }

.dropzone {
  border: 2px dashed var(--borda);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.arrastando {
  border-color: var(--accent);
  background: var(--accent-suave);
}
.dropzone-conteudo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.icone { font-size: 1.8rem; }
.texto-principal { font-size: 0.9rem; color: var(--texto-suave); }
.nome-arquivo { font-size: 0.85rem; font-weight: 600; color: var(--accent); word-break: break-all; }

.avancado { margin-bottom: 20px; }
.avancado summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--texto-suave);
  margin-bottom: 10px;
}
.avancado label {
  display: block;
  font-size: 0.85rem;
  margin-top: 18px;
  margin-bottom: 6px;
  color: var(--texto-suave);
}
.avancado label:first-of-type {
  margin-top: 0;
}
.cartao input[type="text"],
.cartao input[type="number"] {
  display: block;
  width: 100%;
  padding: 16px 18px;
  border-radius: 8px;
  border: 1px solid var(--borda);
  background: var(--bg);
  color: var(--texto);
  font-size: 1.05rem;
}

.botao-principal {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  transition: filter 0.15s;
}
.botao-principal:hover { filter: brightness(1.08); }
.botao-principal:disabled { opacity: 0.6; cursor: not-allowed; }

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: girar 0.7s linear infinite;
}
@keyframes girar { to { transform: rotate(360deg); } }

.cartao-erro {
  border-color: var(--vermelho);
  color: var(--vermelho);
  font-size: 0.9rem;
}

.cartao-resultado h2 { margin-top: 0; color: var(--verde); }

.grade-resumo {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}
@media (min-width: 480px) {
  .grade-resumo { grid-template-columns: repeat(4, 1fr); }
}
.stat {
  background: var(--bg);
  border-radius: 10px;
  padding: 14px 8px;
  text-align: center;
}
.stat-numero { display: block; font-size: 1.5rem; font-weight: 700; }
.stat-legenda { display: block; font-size: 0.72rem; color: var(--texto-suave); margin-top: 2px; }

.detalhe { font-size: 0.9rem; margin: 6px 0; }
.detalhe-lista { font-size: 0.8rem; color: var(--texto-suave); margin: 4px 0 16px; word-break: break-word; }

.botao-download { margin-top: 8px; background: var(--verde); }

.link-cruzado {
  text-align: center;
  font-size: 0.85rem;
  margin: 12px 0 0;
}
.link-cruzado a {
  color: var(--texto-suave);
  text-decoration: none;
}
.link-cruzado a:hover {
  color: var(--accent);
  text-decoration: underline;
}