body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: linear-gradient(135deg, #ffe6f0, #ffd6e8);
  color: #444;
}

header {
  background: linear-gradient(90deg, #fbb1d9, #fcd6f7);
  color: #fff;
  padding: 20px;
  text-align: center;
  font-size: 1.6em;
  border-bottom: 4px solid #fff;
}

nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  background: linear-gradient(90deg, #ffd6e8, #ffe6f0);
  padding: 10px;
}

.tab-btn {
  background: linear-gradient(135deg, #fbb1d9, #fcd6f7);
  color: #fff;
  border: none;
  margin: 5px;
  padding: 12px 20px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: bold;
  transition: transform 0.2s, box-shadow 0.2s;
}

.tab-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.tab-btn.active {
  background: linear-gradient(135deg, #ff9ecf, #fbb1d9);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.tab-content {
  padding: 20px;
  margin: 15px;
  background: #fff;
  border-radius: 15px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.hidden {
  display: none;
}

h2 {
  color: #d46a92;
}

pre {
  background: #ffe6f0;
  padding: 12px;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid #fbb1d9;
}

.tema-img {
  max-width: 250px;
  display: block;
  margin-bottom: 10px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

footer {
  text-align: center;
  padding: 15px;
  background: linear-gradient(90deg, #fcd6f7, #fbb1d9);
  color: #fff;
  margin-top: 20px;
  border-top: 4px solid #fff;
}