body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: #f4f4f4;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 20px;
}

header {
  background-color: #2d3e50;
  color: white;
  text-align: center;
  padding: 40px 20px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.tool-card {
  background: white;
  padding: 20px;
  text-align: center;
  text-decoration: none;
  border-radius: 10px;
  color: #333;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: transform 0.2s, box-shadow 0.3s;
}

.tool-card i {
  font-size: 2rem;
  color: #007BFF;
  margin-bottom: 10px;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

footer {
  background: #ddd;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}