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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0a0a0a;
  color: #e0e0e0;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 4rem 1rem 2rem;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.1rem;
  color: #888;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  display: block;
  background: #161616;
  border: 1px solid #222;
  border-radius: 12px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}

.tool-card:hover {
  border-color: #444;
  transform: translateY(-2px);
}

.tool-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 1rem;
}

.tool-card h2 {
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.tool-card p {
  font-size: 0.9rem;
  color: #888;
  line-height: 1.5;
}

footer {
  text-align: center;
  padding: 3rem 1rem;
  color: #555;
  font-size: 0.85rem;
}