/* General Styles */
 body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f7fa;
    color: #333;
  }

  .container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background: #ffffff;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #4a90e2;
    text-align: center;
  }

  .shapes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 10px;
  }

  .shape {
    background: #f9f9f9;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 20px;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .shape:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
  }

  h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
  }

  label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #666;
  }

  input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin-top: 5px;
    font-size: 0.9rem;
    background: #fff;
    box-sizing: border-box;
  }

  button {
    display: block;
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    background-color: #4a90e2;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    color: #fff;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }

  button:hover {
    background-color: #3b79c4;
  }

  div[id$="-result"] {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #4a90e2;
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }

    h2 {
      font-size: 1.2rem;
    }

    button {
      font-size: 0.9rem;
    }
  }

.cube {
    /* justify-items: center; */
    /* align-items: center; */
    
}