* {
    margin: 0;
    padding: 0;

  }

  body {
    background: linear-gradient(135deg, #1a1b3d, #2c1a4a, #1a1b3d);
  }

  .container {
    box-sizing: border-box;
    width: 100%;
    max-width: 1400px;
    min-width: 1100px;
    margin: 20px auto;
    color: #fff;
  }

  .container * {
    box-sizing: border-box;
  }

  header {
    text-align: center;
    padding: 30px 0;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
  }

  .header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(106, 27, 154, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 0;
  }

  h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    background: linear-gradient(90deg, #ff9a9e, #fad0c4, #a1c4fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
  }

  .subtitle {
    font-size: 1.4rem;
    color: #d0d0ff;
    position: relative;
    z-index: 1;
  }

  .description {
    background: rgba(30, 30, 60, 0.7);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    overflow: hidden;
  }

  .description::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #ff9a9e, #a1c4fd);
  }

  .description h2 {
    font-size: 1.7rem;
    margin-bottom: 20px;
    color: #ffd700;
    display: flex;
    align-items: center;
    gap: 15px;
  }

  .description p {
    margin: 18px 0;
    line-height: 1.7;
    font-size: 1.15rem;
    color: #e0e0ff;
  }

  .highlight {
    background: rgba(255, 218, 121, 0.15);
    padding: 3px 8px;
    border-radius: 5px;
    color: #ffd700;
  }

  .tool-container {
    display: flex;
    gap: 35px;
    margin-bottom: 40px;
  }

  .tool-box {
    flex: 1;
    background: rgba(30, 30, 60, 0.7);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .tool-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #ff9a9e, #a1c4fd);
  }

  .tool-box:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
  }

  .tool-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .tool-header h2 {
    font-size: 1.7rem;
    color: #ffd700;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  }

  .tool-icon {
    font-size: 2.1rem;
    background: rgba(255, 255, 255, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  .textarea-container {
    position: relative;
    margin-bottom: 25px;
  }

  textarea {
    width: 100%;
    height: 320px;
    padding: 20px;
    background: rgba(20, 20, 40, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: #fff;
    font-size: 1.15rem;
    resize: vertical;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: 'Consolas', 'Courier New', monospace;
    line-height: 1.6;
  }

  textarea:focus {
    outline: none;
    border-color: #ff9a9e;
    box-shadow: 0 0 0 2px rgba(255, 154, 158, 0.3);
  }

  .btn-container {
    display: flex;
    gap: 18px;
  }

  button {
    flex: 1;
    padding: 16px;
    background: linear-gradient(90deg, #ff9a9e, #f76c6c);
    border: none;
    border-radius: 10px;
    color: #1a1a2e;
    font-size: 1.25rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  button:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  }

  button:active {
    transform: translateY(0);
  }

  .decode-btn {
    background: linear-gradient(90deg, #a1c4fd, #6c9bff);
  }

  .copy-btn {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 8px;
    color: #fff;
    padding: 10px 15px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(5px);
    z-index: 10;
  }

  .copy-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
  }

  .example {
    background: rgba(30, 30, 60, 0.7);
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    overflow: hidden;
  }

  .example::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #a1c4fd, #ff9a9e);
  }

  .example h2 {
    font-size: 1.7rem;
    margin-bottom: 25px;
    color: #ffd700;
    display: flex;
    align-items: center;
    gap: 15px;
  }

  .example-code {
    background: rgba(20, 20, 40, 0.6);
    border-radius: 12px;
    padding: 25px;
    overflow-x: auto;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    max-height: 300px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

  footer {
    text-align: center;
    padding: 30px 0;
    margin-top: auto;
    color: rgba(255, 255, 255, 0.7);
    width: 100%;
  }

  .notification {
    position: fixed;
    top: 80px;
    right: 25px;
    padding: 18px 28px;
    background: rgba(20, 20, 40, 0.95);
    border-radius: 12px;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    transform: translateX(200%);
    transition: transform 0.4s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 15px;
    border-left: 5px solid #6c9bff;
  }

  .notification.show {
    transform: translateX(0);
  }

  .notification.success {
    border-left-color: #6cff9b;
  }

  .notification.error {
    border-left-color: #ff6c6c;
  }

  .particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
  }

  .particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 15s infinite linear;
  }

  @keyframes float {
    0% {
      transform: translateY(0) translateX(0) rotate(0deg);
      opacity: 0;
    }

    10% {
      opacity: 1;
    }

    90% {
      opacity: 1;
    }

    100% {
      transform: translateY(-100vh) translateX(100px) rotate(360deg);
      opacity: 0;
    }
  }

  .status-bar {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 0.9rem;
  }

  .status-item {
    display: flex;
    align-items: center;
    gap: 8px;
  }