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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: rgba(255, 255, 255, 0.95);
  padding: 40px 0;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: #667eea;
}

header p {
  color: #666;
  font-size: 1.1rem;
}

main {
  padding: 60px 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.tool-card {
  background: white;
  border-radius: 12px;
  padding: 30px;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.tool-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.tool-name {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: #333;
}

.tool-description {
  color: #666;
  line-height: 1.6;
  font-size: 0.95rem;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  color: #666;
  font-size: 1.2rem;
}

footer {
  background: rgba(255, 255, 255, 0.95);
  padding: 30px 0;
  text-align: center;
  color: #666;
  margin-top: auto;
}

@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
}