:root {
  --primary: #5f7161;
  --secondary: #f4f1ea;
  --dark: #2d3436;
  --white: #ffffff;
  --transition: all 0.4s ease;
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.grid {
  display: grid;
  gap: 30px;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Card System */
.card {
  background: var(--white);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Buttons */
.btn {
  padding: 12px 30px;
  border-radius: 6px;
  text-decoration: none;
  display: inline-block;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: #4a5a4d;
}