* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
  }

  body {
      width: 100vw;
      height: 100vh;
      overflow: hidden;
      font-family: monospace;
  }

  canvas {
      width: 100%;
      height: 100%;
      background-color: rgb(0, 0, 0);
      position: fixed;
      top: 0;
      left: 0;
      z-index: 1;
  }

  header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: rgba(15, 23, 42, 0);
      z-index: 20;
      padding: 10px 0;
      backdrop-filter: blur(1px);
  }

  .navbar {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
  }

  .logo-container {
      display: flex;
      align-items: center;
  }

  .logo-container h1 {
      color: white;
      font-size: 1.5rem;
      margin-left: 10px;
      font-weight: 600;

  }

  .navbar .logo {
      width: 80px;
      height: 80px;
      background-image: url("logo.svg");
      background-position: center;
      background-size: contain;
      background-repeat: no-repeat;
  }

  .navs {
      display: flex;
      gap: 10px;
  }

  .navs button {
      width: 50px;
      height: 50px;
      background-color: rgba(255, 255, 255, 0);
      color: white;
      font-size: 20px;
      border: none;
      border-radius: 50%;
      cursor: pointer;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .navs button:hover {
      transform: rotate(30deg);
  }


  .panel-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 15px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .panel-header h2 {
      color: white;
      font-size: 1.25rem;
      font-weight: 600;
      letter-spacing: 0.5px;
  }

  .close-btn {
      background: rgba(255, 255, 255, 0.1);
      border: none;
      color: white;
      font-size: 1rem;
      cursor: pointer;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
  }

  .close-btn:hover {
      background: rgba(255, 255, 255, 0.25);
      transform: scale(1.1);
  }


  .welcome-panel {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) scale(0.9);
      background: rgba(255, 255, 255, 0.02);
      backdrop-filter: blur(25px);
      -webkit-backdrop-filter: blur(25px);
      border-radius: 16px;
      padding: 30px;
      width: 90%;
      max-width: 450px;
      z-index: 30;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
      opacity: 0;
      visibility: hidden;
  }

  .welcome-panel.active {
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
      visibility: visible;
  }


  .customization-panel {
      position: fixed;
      top: 0;
      right: 0;
      height: 100vh;
      width: 360px;
      background: rgba(255, 255, 255, 0.02);
      backdrop-filter: blur(25px);
      -webkit-backdrop-filter: blur(25px);
      z-index: 40;
      box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
      transform: translateX(100%);
      transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
  }

  .customization-panel.active {
      transform: translateX(0);
  }

  .customization-panel .panel-header {
      padding: 20px 25px;
      margin-bottom: 0;
      background: rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .panel-content {
      flex: 1;
      overflow-y: auto;
      padding: 25px;
  }


  .panel-content::-webkit-scrollbar {
      width: 6px;
  }

  .panel-content::-webkit-scrollbar-track {
      background: rgba(255, 255, 255, 0.02);
  }

  .panel-content::-webkit-scrollbar-thumb {
      background: rgba(255, 255, 255, 0.15);
      border-radius: 3px;
  }

  .panel-content::-webkit-scrollbar-thumb:hover {
      background: rgba(255, 255, 255, 0.25);
  }


  .control-group {
      margin-bottom: 25px;
  }

  .control-group label {
      display: block;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 12px;
      font-size: 0.9rem;
      font-weight: 500;
  }

  .slider-container {
      display: flex;
      align-items: center;
      gap: 15px;
      background: rgba(255, 255, 255, 0);
      padding: 10px 15px;
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.05);
      transition: border-color 0.2s;
  }

  .slider-container:hover {
      border-color: rgba(255, 255, 255, 0.15);
  }

  .slider-container input[type="range"] {
      flex: 1;
      appearance: none;
      -webkit-appearance: none;
      height: 4px;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 2px;
      outline: none;
  }

  .slider-container input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #e2e8f0;
      cursor: pointer;
      transition: all 0.2s ease;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  }

  .slider-container input[type="range"]::-webkit-slider-thumb:hover {
      transform: scale(1.2);
      background: #ffffff;
      box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
  }

  .slider-value {
      color: white;
      font-family: monospace;
      font-size: 0.85rem;
      min-width: 45px;
      text-align: center;
      font-weight: 600;
  }


  .toggle-container {
      margin-top: 30px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .toggle-label {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      cursor: pointer;
  }

  .toggle-text {
      color: rgba(255, 255, 255, 0.9);
      font-size: 0.95rem;
      font-weight: 500;
  }

  .toggle-switch {
      position: relative;
      width: 50px;
      height: 26px;
      margin-top: 10px;
  }

  .toggle-switch input {
      opacity: 0;
      width: 0;
      height: 0;
  }

  .toggle-slider {
      position: absolute;
      cursor: pointer;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: rgba(255, 255, 255, 0.15);
      transition: .4s;
      border-radius: 34px;
  }

  .toggle-slider:before {
      position: absolute;
      content: "";
      height: 20px;
      width: 20px;
      left: 3px;
      bottom: 3px;
      background-color: white;
      transition: .4s;
      border-radius: 50%;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  }

  input:checked+.toggle-slider {
      background-color: rgba(255, 255, 255, 0.8);
  }

  input:checked+.toggle-slider:before {
      transform: translateX(24px);
  }


  .action-btn {
      width: 100%;
      padding: 14px;
      background: rgba(255, 255, 255, 0.1);
      color: white;
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: 12px;
      cursor: pointer;
      font-family: monospace;
      font-size: 0.95rem;
      font-weight: 500;
      transition: all 0.2s ease;
      margin-top: 15px;
  }

  .action-btn:hover {
      background: rgba(255, 255, 255, 0.15);
      transform: translateY(-1px);
  }

  .action-btn.clear {
      background: rgba(255, 255, 255, 0.05);
      border-color: rgba(255, 255, 255, 0.1);
      color: rgba(255, 255, 255, 0.7);
  }

  .action-btn.clear:hover {
      background: rgba(255, 255, 255, 0.15);
      color: white;
  }

  .welcome-content {
      color: rgba(255, 255, 255, 0.8);
      line-height: 1.6;
      margin-bottom: 25px;
      font-size: 0.95rem;
  }

  .welcome-content p {
      margin-bottom: 12px;
  }

  .overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.4);
      backdrop-filter: blur(4px);
      z-index: 35;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
  }

  .overlay.active {
      opacity: 1;
      visibility: visible;
  }


  @media (max-width: 768px) {
      .logo-container h1 {
          font-size: 1.2rem;
      }

      .navbar .logo {
          width: 70px;
          height: 70px;
      }

      .welcome-panel {
          width: 90%;
          padding: 20px;
      }

      .customization-panel {
          width: 100%;
      }
  }

  @media (max-width: 480px) {
      .navbar {
          padding: 0 15px;
      }

      .logo-container h1 {
          font-size: 1rem;
      }

      .navbar .logo {
          width: 60px;
          height: 60px;
      }

      .navs button {
          width: 40px;
          height: 40px;
          font-size: 1.1rem;
      }

      .panel-header h2 {
          font-size: 1.1rem;
      }
  }