:root {
    --bg-color: #0a192f;
    --text-color: #e6f1ff;
    --primary-color: #64ffda;
    --secondary-color: #8892b0;
    --accent-color: #f81ce5;
    --slider-bg: #172a45;
    --slider-thumb: #64ffda;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "League Spartan", sans-serif;
  }
  
  body {
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
  }
  
  #wrapper {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
  }
  
  .container {
    background-color: rgba(23, 42, 69, 0.7);
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
  }
  
  .heading {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
  }
  
  .displayContainer {
    position: relative;
    background-color: var(--slider-bg);
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    overflow: hidden;
    padding: 1rem;
  }
  
  .displayContainer input {
    width: 100%;
    background-color: transparent;
    border: none;
    outline: none;
    padding: 1rem;
    color: var(--text-color);
    font-size: 1.2rem;
  }
  
  .copyBtn {
    background-color: transparent;
    border: none;
    cursor: pointer;
    padding: 1rem;
    transition: all 0.3s ease;
  }
  
  .copyBtn:hover {
    background-color: rgba(100, 255, 218, 0.1);
  }
  
  .copyBtn img {
    filter: invert(1);
  }
  
  .inputContainer {
    margin-top: 1.5rem;
  }
  
  .lengthContainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: bold;
  }
  
  .slider {
    width: 100%;
    height: 0.5rem;
    background-color: var(--slider-bg);
    border-radius: 0.25rem;
    outline: none;
    -webkit-appearance: none;
    margin-bottom: 1.5rem;
  }
  
  .slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    background-color: var(--slider-thumb);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 10px var(--primary-color);
  }
  
  .check {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    font-family: "Poppins", sans-serif;
  }
  
  .check input[type="checkbox"] {
    margin-right: 0.5rem;
    cursor: pointer;
    transform: scale(1.3);
    accent-color: var(--primary-color);
  }
  
  .check label {
    cursor: pointer;
    transition: color 0.3s ease, transform 0.3s ease;
  }
  
  .check:hover label {
    color: var(--primary-color);
    transform: translateX(5px);
  }
  
  .strengthContainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    margin-bottom: 2rem;
  }
  
  .indicator {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background-color: #f00;
    transition: background-color 0.3s ease;
  }
  
  #generateBtn {
    width: 100%;
    padding: 1rem;
    border: none;
    background-color: var(--primary-color);
    color: var(--bg-color);
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  #generateBtn:hover {
    background-color: var(--accent-color);
    box-shadow: 0 0 20px rgba(248, 28, 229, 0.5);
  }
  
  /* Animations */
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  .container {
    animation: fadeIn 0.5s ease-out;
  }
  
  .copyBtn span {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--primary-color);
    color: var(--bg-color);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  
  .copyBtn span.active {
    opacity: 1;
  }
  
  /* Responsive design */
  @media (max-width: 480px) {
    #wrapper {
      padding: 1.5rem;
    }
  
    .container {
      padding: 2rem;
    }
  
    .heading {
      font-size: 2rem;
    }
  
    .displayContainer input {
      font-size: 1.2rem;
    }
  
    .lengthContainer {
      font-size: 1.1rem;
    }
  }