body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
      background: #f8f8f8;
    }

    .container {
      max-width: 1200px;
      margin: auto;
      padding: 20px;
    }

    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logout {
      background: #ccc;
      border: none;
      padding: 10px 20px;
      cursor: pointer;
    }

    .tabs {
      margin: 20px 0;
    }

    .tab {
      padding: 10px 15px;
      margin-right: 5px;
      border: none;
      background: #eee;
      cursor: pointer;
    }

    .tab.active {
      background: #007bff;
      color: white;
    }

    .content {
      display: flex;
      flex-wrap: nowrap;
      gap: 20px;
      align-items: flex-start;
    }

    .menu {
      flex: 3;
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
      gap: 15px;
      max-height: 600px;
      overflow-y: auto;
      background: white;
      padding: 10px;
      border-radius: 8px;
    }

    .food-card {
      background: #fff;
      padding: 15px;
      text-align: center;
      border-radius: 8px;
      box-shadow: 0 0 5px rgba(0,0,0,0.1);
      cursor: pointer;
    }

    .food-card img {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
      margin-bottom: 10px;
    }

    .order-summary {
      flex: 1;
      background: white;
      padding: 15px;
      border-radius: 8px;
      height: fit-content;
      min-width: 250px;
    }

    .pay-btn {
      width: 100%;
      padding: 10px;
      margin: 10px 0;
      background: #007bff;
      color: white;
      border: none;
    }

    .place-order {
      width: 100%;
      padding: 12px;
      background: green;
      color: white;
      border: none;
      font-weight: bold;
    }

    #history {
      display: none;
      background: white;
      padding: 15px;
      margin-top: 20px;
      border-radius: 8px;
    }

    #food-management {
      display: none;
      background: white;
      padding: 15px;
      margin-top: 20px;
      border-radius: 8px;
    }

    input, select {
      padding: 8px;
      margin: 5px;
      width: calc(100% - 20px);
    }

    .food-row {
      display: flex;
      justify-content: space-between;
      padding: 5px 0;
    }

    .food-row img {
      width: 50px;
      height: 50px;
      object-fit: cover;
      border-radius: 50%;
      margin-right: 10px;
    }

    .food-row button {
      margin-left: 5px;
    }