* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-image: url('../img/WatchBG.jpg'); 
    background-size: cover;
    background-position: center;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 10px;
  }
  
  #app {
    background: rgba(0, 0, 0, 0.5);
    padding: 30px 40px 40px;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    width: 350px;
    max-width: 100%;
    user-select: none;
    display: flex;
    flex-direction: column;
  }
  
  h1 {
    margin: 0 0 20px;
    font-weight: 700;
    font-size: 2.4rem;
    text-align: center;
    letter-spacing: 2px;
  }
  
  #display {
    font-size: 4rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    font-variant-numeric: tabular-nums;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    letter-spacing: 0;
  }
  
  .time-segment {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 60px;
    font-variant-numeric: tabular-nums;
  }
  
  .time-value {
    font-family: monospace;
    width: 100%;
    text-align: center;
  }
  
  .time-divider {
    font-weight: 700;
    display: flex;
    align-items: center;
    font-size: 4rem;
    line-height: 1;
    user-select: none;
  }
  
  #ampm {
    width: 55px;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    user-select: none;
    opacity: 0.85;
  }
  
  @media (max-width: 400px) {
    #app {
      padding: 20px 25px 25px;
      width: 100%;
      max-height: 600px;
    }
  
    h1 {
      font-size: 1.8rem;
      margin-bottom: 15px;
    }
  
    #display {
      font-size: 3rem;
      margin-bottom: 20px;
      gap: 8px;
    }
  
    .time-segment {
      width: 45px;
    }
  
    #ampm {
      font-size: 1.4rem;
      width: 45px;
    }
  }