:root {
      --font-size-base: 16px;
      --font-size-input: 1rem;
      --font-size-button: 1rem;
      --padding: 1rem;
      --button-height: 48px;
      --input-height: 44px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: system-ui, sans-serif;
      font-size: var(--font-size-base);
      padding: var(--padding);
      background: #f9f9f9;
    }

    header {
      text-align: center;
      margin-bottom: 2rem;
    }

    form {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    label {
      font-weight: bold;
    }

    input {
      font-size: var(--font-size-input);
      height: var(--input-height);
      padding: 0.2rem;
      border: 1px solid #ccc;
      border-radius: 6px;
    }

button {
  font-size: var(--font-size-button);
  height: var(--button-height);
  background-color: #007bff;
  color: white;
  border: 2px solid black;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 3px;
  margin-bottom: 3px;
}
    button:active {
      background-color: #0056b3;
    }

/*   Added later */   
table {
      width: 100%;
      border-collapse: collapse;
      margin-bottom: 1rem;
    }

    table, th, td {
      border: 1px solid #ccc;
    }

    th, td {
      padding: 0.5rem;
      text-align: left;
    }

    ul {
      padding-left: 1.5rem;
      margin-bottom: 1rem;
    }

    .grid-container {
      border: 1px solid #ccc;
      max-height: 500px;
      overflow-y: auto;
    }
    .grid-header, .grid-row {
      display: flex;
    }
    .grid-header {
      position: sticky;
      top: 0;
      background: #f0f0f0;
      font-weight: bold;
      z-index: 1;
      cursor: pointer;
    }
    .grid-header div, .grid-row div {
      flex: 1;
      padding: 4px;
      border-bottom: 1px solid #ccc;
    }
    .grid-row input {
      width: 100%;
      padding: 2px;
      box-sizing: border-box;
    }