input {
      width: 100%;
      padding: 12px 14px;
      font-size: 16px;
      border-radius: 8px;
      border: 1.8px solid #ccc;
      transition: border-color 0.25s ease;
      outline-offset: 2px;
      outline-color: transparent;
      font-weight: 500;
      color: #222;
      user-select: text;
      cursor: text;
    }
    .toggle-group {
      display: flex;
      gap: 10px;
      margin-bottom: 15px;
    }
    .toggle-button {
      flex: 1;
      padding: 10px;
      text-align: center;
      border: 2px solid #634fa1;
      border-radius: 8px;
      cursor: pointer;
      user-select: none;
      transition: 0.2s;
      background-color: white;
    }
    .toggle-button.active {
      background-color: #634fa1;
      color: white;
      border-color: #634fa1;
    }
    button.calculate-btn {
      background-color: #fdc620;
      color: #43413d;
      cursor: pointer !important;
      padding: 10px 25px;
      letter-spacing: .1em;
      user-select: none;
      right: 10px;
      float: right;
      margin-top: 15px;
    }
    button:hover {
      background-color: #ffd863;
	  color: #43413d;
    }
    .result-container {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      background: #ebebeb;
      padding: 15px;
      border-radius: 10px;
      margin-top: 20px;
    }
    .result {
      flex: 1;
      min-width: 220px;
    }
    .chart-wrapper {
      flex: 1;
      min-width: 220px;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    canvas {
      max-width: 100%;
      height: auto;
    }
    @media (max-width: 767px) {
      .result-container {
        flex-direction: column;
        align-items: center;
      }
      .chart-wrapper {
        margin-top: 20px;
      }
    }