body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #4a6fe9, #27cdc0);
  padding: 80px 20px;
  text-align: center;
  color: white;
}

header h1 {
  margin: 0;
  font-size: 3rem;
}

header p {
  margin-top: 10px;
  font-size: 1.2rem;
  opacity: 0.9;
}

section {
  max-width: 1000px;
  padding: 20px 20px;
  margin: auto;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 10px;
  border-bottom: 3px solid #4a6fe9;
  display: inline-block;
}

.section-subtitle {
  font-size: 1.5rem;
  margin-bottom: 10px;
  border-bottom: 3px solid #4a6fe9;
  display: inline-block;
}

.features-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-top: 20px;
}

.feature-card {
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.demo-image {
  max-width: 100%;
  border-radius: 10px;
  margin-top: 20px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin-top: 20px;
  background: #4a6fe9;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.3s ease;
}

.btn:hover {
  background: #345dc7;
}

footer {
  background: #222;
  color: #eee;
  text-align: center;
  padding: 30px 20px;
  font-size: 0.9rem;
}

/* Estilização da seção DEMO */
#demo {
  padding: 2rem 1rem;
  background-color: #f7f7f7;
  border-radius: 10px;
  margin-top: 2rem;
}

.demo-media {
  text-align: center;
  margin-bottom: 1.5rem;
}

.demo-image {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

/* Estilo do bloco de código */
.code-block {
  background-color: #1e1e1e;  /* tipo VSCode dark */
  color: #f5f5f5;
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.4;
}

/* Títulos */
.section-title {
  margin-bottom: 0.8rem;
}