:root {
      --main-color:#fff;
      --black:#13131a;
      --bg:#4b6cb7;
      --bg2:#182848;
      --accent:#ff4757;
    }
    * {
      margin:0; padding:0;
      box-sizing: border-box;
      font-family: 'Poppins', sans-serif;
    }
    body {
      background: linear-gradient(135deg,var(--bg),var(--bg2));
      color: var(--main-color);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      text-align: center;
      padding: 1rem;
    }
    h1 {
      font-size: clamp(2.5rem, 6vw, 5rem);
      margin-bottom: 1rem;
      font-weight: 800;
      letter-spacing: 2px;
      color: var(--main-color);
      text-shadow: 0 4px 8px rgba(0,0,0,0.4);
    }
    #cellContainer {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      width: min(90vw, 450px);
      margin: 2rem auto;
    }
    .cell {
      width: 100%;
      aspect-ratio: 1/1;
      background: rgba(255,255,255,0.1);
      border: 2px solid rgba(255,255,255,0.6);
      border-radius: 12px;
      font-size: clamp(2rem, 10vw, 5rem);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
    }
    .cell:hover {
      background: rgba(255,255,255,0.25);
      transform: scale(1.05);
    }
    #statusText {
      font-size: clamp(1.5rem, 4vw, 2rem);
      margin-bottom: 1.5rem;
      font-weight: 600;
    }
    .btn {
      background: var(--accent);
      color: #fff;
      font-size: 1.2rem;
      font-weight: bold;
      padding: 0.8rem 2rem;
      border: none;
      border-radius: 10px;
      cursor: pointer;
      transition: 0.3s;
    }
    .btn:hover {
      background: #ff6b81;
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    }
    .footer {
    margin-top: auto;          
    background: #000000cc;       
    padding: 1rem;
    border-radius: 0;      
    font-size: 1rem;
    width: 100%;              
    text-align: center;
    position: fixed;                
    bottom: 0;
    left: 0;
    }

    .footer .credit {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 400;
    }

    .footer .credit span {
    color: var(--accent);
    font-weight: bold;
    }