body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      margin: 0;
      padding: 0;
      background: linear-gradient(135deg, #90b2ca, #002ec4);
      display: flex;
      height: 100vh;
    }

    .left, .right {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 20px;
      box-sizing: border-box;
    }

    .left {
      border-right: 2px solid #5492d9;
      position: relative; 
    }

    .left > h6{
  color: #36dbdb;  
  box-shadow: 0 0 20px rgb(48, 188, 231),
                  inset 0 0 15px rgb(51, 193, 221);
  font-family: Arial, sans-serif;
  font-weight: bold;
    }

    .right {
      padding: 20px;
      overflow-y: auto;
    }
    h1, h2 {
      color: #ffffffd0;
      margin-bottom: 5px;
      
    }
    .number-display {
      font-size: 100px;
      font-weight: bold;
      color: #ff0000;
      text-shadow: 2px 2px 4px rgba(128, 190, 65, 0.2);
      margin-bottom: 20px;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(10, 1fr);
      max-width: 600px;
      gap: 8px;
    }
    .grid div {
      padding: 12px;
      background-color: #fff;
      border-radius:10px;
      font-size: 25px bold white;
      color: #1d305f78;
      border: 1px solid #7851b2;
      box-shadow: 0 1px 4px rgba(79, 182, 214, 0.05);
      transition: all 0.3s ease;
    }
    .called {
      background-color: #ff0000 !important;
      color: white !important;
      font-weight: bold;
      border-color: #388e3c;
      box-shadow: 0 0 10px rgba(217, 35, 21, 0.815);
    }
    button {
      padding: 12px 28px;
      font-size: 20px;
      background-color: #6333b5;
      color: white;
      border: none;
      border-radius: 15px;
      cursor: pointer;
      box-shadow: 5px 5px 7px #250e54bd;
      transition: background-color 0.3s ease;
      margin-top: 30px;
    }
    button:hover {
      background-color: #250e54bd;
    }

    .previous-numbers {
  font-size: 30px;
  font-weight: bold;
  color: #00ffea;
  margin-top: 10px;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

  .reset-btn {
  position: absolute;
  top: 0; 
  right: 20px;
  padding: 10px 20px;
  font-size: 12px;
  font-weight: bolder;
  background: #e63946;
  color: white;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  box-shadow: 2px 2px 6px rgba(202, 74, 74, 0.489);
  transition: 0.3s;
}

.reset-btn:hover {
  background: #c71c2f;
}