.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
  }

  .kpi-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
  }

  .kpi-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: #888;
    margin-bottom: 10px;
  }

  .kpi-value {
    font-size: 2rem;
    font-weight: 600;
    color: #333;
  }

  .kpi-change {
    font-size: 0.9rem;
    margin-top: 8px;
  }

  .up { color: #28a745; }
  .down { color: #dc3545; }

  /* Responsive layout for small screens */
  @media (max-width: 768px) {
    .kpi-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 480px) {
    .kpi-grid {
      grid-template-columns: 1fr;
    }
  }