* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(to right, #e3f2fd, #ffffff);
  color: #333;
}

header {
  background: #0d47a1;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

header h1 {
  font-size: 1.8rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #00bad3;
  border-bottom: 2px solid #00bad3;
}

.section {
  padding: 3rem 2rem;
  text-align: center;
}

form {
  margin: 2rem auto;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

input {
  padding: 10px;
  width: 270px;
  border-radius: 8px;
  border: 2px solid #1976d2;
  font-size: 1rem;
}

button {
  padding: 10px 20px;
  background: linear-gradient(to right, #1976d2, #0d47a1);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s ease;
}

button:hover {
  transform: scale(1.05);
}

.card {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  max-width: 600px;
  margin: 2rem auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  animation: fadeIn 0.8s ease;
}

.recomendacao {
  font-size: 1.3rem;
  margin: 1rem 0;
  font-weight: bold;
}

.compra { color: #2e7d32; }
.venda { color: #c62828; }
.manter { color: #f9a825; }

.explicacao ul {
  text-align: left;
  margin-top: 1rem;
  padding-left: 1.5rem;
}

.grafico-container {
  margin: auto;
  max-width: 800px;
  background: #f0f2f5;
  padding: 1rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.acoes-lista {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.acoes-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  width: 300px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.acoes-card h3 {
  color: #0d47a1;
  margin-bottom: 1rem;
}

.acoes-card ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.acoes-card ul li {
  margin: 0.5rem 0;
}

footer {
  background: #0d47a1;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 3rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}