* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    background: #f5f7fb;
    color: #172033;
  }
  
  .app {
    max-width: 1050px;
    margin: auto;
    padding: 40px 20px;
  }
  
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
  }
  
  h1 {
    margin: 0;
    font-size: 32px;
  }
  
  h1 span {
    font-weight: 400;
  }
  
  header p {
    margin-top: 5px;
    color: #6b7280;
  }
  
  .status {
    background: #fff;
    padding: 10px 16px;
    border-radius: 20px;
    font-size: 14px;
  }
  
  .status span {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    margin-right: 6px;
  }
  
  .card {
    background: white;
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  }
  
  .card-header {
    margin-bottom: 25px;
  }
  
  .card-header h2 {
    margin: 0 0 6px;
  }
  
  .card-header p {
    margin: 0;
    color: #6b7280;
  }
  
  .grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  
  .field {
    display: flex;
    flex-direction: column;
    gap: 7px;
  }
  
  label {
    font-size: 14px;
    font-weight: 600;
  }
  
  input {
    padding: 13px 14px;
    border: 1px solid #d9dee8;
    border-radius: 9px;
    font-size: 15px;
    outline: none;
  }
  
  input:focus {
    border-color: #111827;
  }
  
  button {
    margin-top: 25px;
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    background: #111827;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
  }
  
  button:disabled {
    opacity: 0.6;
    cursor: wait;
  }
  
  .empty {
    text-align: center;
    padding: 40px;
    color: #8a93a3;
  }
  
  .empty div {
    font-size: 35px;
    margin-bottom: 10px;
  }
  
  .result {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  
  .result-item {
    background: #f7f8fa;
    padding: 16px;
    border-radius: 10px;
  }
  
  .result-item small {
    display: block;
    color: #737b8c;
    margin-bottom: 5px;
  }
  
  .result-item strong {
    font-size: 17px;
  }
  
  .error {
    padding: 15px;
    border-radius: 10px;
    background: #fff1f2;
  }

  .confirm-live {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 16px 0 8px;
    color: #4b5563;
    font-size: 14px;
    line-height: 1.4;
  }

  .confirm-live input {
    margin-top: 3px;
  }

  .demo-banner {
    margin-bottom: 24px;
    padding: 14px 16px;
    border-radius: 10px;
    background: #fff7ed;
    border: 1px solid #fdba74;
    color: #9a3412;
    font-size: 14px;
    line-height: 1.45;
  }
  
  @media (max-width: 700px) {
    .grid,
    .result {
      grid-template-columns: 1fr;
    }
  
    header {
      align-items: flex-start;
      gap: 15px;
      flex-direction: column;
    }
  }