.recharge-container {
      font-family: 'Roboto', sans-serif;
      background: #0906BA;
      max-width: 430px;
      margin: 30px auto;
      padding: 20px;
      border-radius: 10px;
      box-shadow: 0 0 13px rgba(0,0,0,0.9);
      text-align: center;
    }

    .recharge-container h2 {
      color: red;
      font-size: 20px;
      font-weight: 700;
      background: #FBFF00;
      border: 2px dashed #000EFF;
      padding: 8px;
      border-radius: 8px;
      margin-bottom: 12px;
    }

    .recharge-container label {
      display: block;
      text-align: left;
      font-weight: bold;
      margin: 5px 0 -5px 5px;
      color: #FFFFFF;
    }

    .recharge-container input {
      width: 98%;
      padding: 12px;
      margin: 12px 0 14px;
      border-radius: 6px;
      border: 2px solid #27DDF5;
      font-size: 16px;
    }

    .sim-options, .plan-options {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
      margin-bottom: 10px;
      padding: 12px;
      border: 2px solid #27DDF5;
      border-radius: 12px;
    }

    .sim-box {
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 10px;
      background: #f9f9f9;
      border: 2px solid transparent;
      border-radius: 10px;
      cursor: pointer;
      transition: all 0.3s ease;
      height: 60px;
    }

    .sim-box img {
      max-height: 60px;
      width: auto;
      height: auto;
      object-fit: contain;
    }

    .sim-box.selected {
      border-color: green;
      box-shadow: 0 0 8px green;
    }

    .plan-card {
      background: #f0f0f0;
      padding: 20px;
      font-size: 20px;
      font-weight: bold;
      text-align: center;
      border-radius: 10px;
      border: 2px solid transparent;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .plan-card.selected {
      border-color: green;
      box-shadow: 0 0 8px green;
    }

    .recharge-button, .processing-indicator {
      width: 100%;
      padding: 12px 25px;
      border-radius: 6px;
      margin-top: 2px;
      font-size: 18px;
      font-weight: bold;
    }

    .recharge-button {
      background: #15BA06;
      color: white;
      border: none;
      cursor: pointer;
    }

    .processing-indicator {
      display: none;
      color: red;
      font-weight: bold;
      background: #fff5f5;
      border: 1px solid red;
    }

    .loader {
      border: 2px solid #f3f3f3;
      border-top: 2px solid red;
      border-radius: 50%;
      width: 14px;
      height: 14px;
      animation: spin 0.7s linear infinite;
      display: inline-block;
      margin-right: 8px;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    .success-msg {
      display: none;
      color: white;
      margin-top: 15px;
      font-weight: bold;
    }

    @media screen and (max-width: 480px) {
      .sim-box img {
        max-height: 50px;
      }
      .plan-card {
        font-size: 18px;
      }
    }