body {
            font-family: 'Roboto', Arial, sans-serif;
            margin: 0;
            overflow: auto;
            background-color: #ffffff; 
            color: #000000; 
            transition: background-color 0.3s ease, color 0.3s ease;
            --line-color-base: rgba(0, 0, 0, 1); 
            --canvas-background: #ffffff;
        }

        body.dark-mode {
            background-color: #121212; 
            color: #f0f0f0; 
            --line-color-base: rgba(255, 255, 255, 1); 
            --canvas-background: #121212;
        }

        canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
        }

        .logo-container {
            text-align: center;
            margin-top: 20px;
        }

        .logo-container img {
            width: 200px;
            height: auto;
            filter: invert(0); 
            transition: filter 0.3s ease;
        }

        body.dark-mode .logo-container img {
            filter: invert(1); 
        }

        .logo-container p {
            font-size: 1.5rem;
            color: inherit; 
            margin-top: 10px;
        }

        .custom-upload-container {
          display: flex;
          flex-direction: column; 
          align-items: center; 
          gap: 10px; 
        }

        .button-row {
          display: flex; 
          align-items: center; 
          gap: 15px; 
        }

        .custom-upload-button {
            display: inline-block;
            padding: 12px 25px;
            font-size: 1rem;
            color: #000;
            background: linear-gradient(to bottom, #ffffff, #f8feff);
            border: 2px solid #e9eff4;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s ease, color 0.3s ease;
            font-weight: bold;
        }

        .custom-upload-button:hover {
            background: linear-gradient(to bottom, #ffffff, #d6fafd);
            border-color: #91a8c1;
        }

        body.dark-mode .custom-upload-button {
            color: #ffffff;
            background: linear-gradient(to bottom, #21252a, #000000);
            border: 2px solid #ffffff;
        }

        body.dark-mode .custom-upload-button:hover {
            background: linear-gradient(to bottom, #516672, #000000);
            border: 2px solid #c7e0ff;
        }

        .file-name {
            display: block;
            margin-top: 10px;
            margin-bottom: 20px;
            font-size: 1rem;
            color: #555;
        }

        body.dark-mode .file-name {
            color: #aaaaaa;
        }

        #fileInput {
            display: none;
        }

        #editor {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            max-width: 90%;
            margin: 20px auto;
        }

        .item-block {
            background: linear-gradient(to bottom, #ffffff, #f8feff);
            border: 2px solid #e9eff4;
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        body.dark-mode .item-block {
            background: linear-gradient(to bottom, #21252a, #000000);
            border: 2px solid #ffffff;
        }

        .item-id {
            font-size: 1rem;
            font-weight: bold;
            color: #555;
            margin-bottom: 10px;
        }

        body.dark-mode .item-id {
            color: #fff;
        }

        .item-text {
            font-size: 1.2rem;
            font-weight: bold;
            margin: 5px 0;
            color: #333;
            border: 1px solid #e9eff4;
            padding: 5px;
            border-radius: 5px;
            width: 100%;
            text-align: center;
        }

        body.dark-mode .item-text {
            color: #fff;
            background: #222;
            border: 1px solid #fff;
        }

        .item-emoji {
            font-size: 2rem;
            text-align: center;
            border: 1px solid #e9eff4;
            border-radius: 5px;
            width: 100%;
            padding: 5px;
            margin: 10px 0;
        }

        body.dark-mode .item-emoji {
            color: #fff;
            background: #222;
            border: 1px solid #fff;
        }

        .delete-button {
            background: linear-gradient(to bottom, #ffffff, #f8feff);
            border: 1px solid #e9eff4;
            color: #000;
            font-size: 0.9rem;
            font-weight: bold;
            padding: 8px 12px;
            border-radius: 4px;
            cursor: pointer;
            margin-top: 10px;
            transition: background 0.3s ease, color 0.3s ease;
        }

        .delete-button:hover {
            background: linear-gradient(to bottom, #ffffff, #d6fafd);
            color: #000;
            border-color: #91a8c1;
        }

        body.dark-mode .delete-button {
            color: #f0f0f0;
            background: linear-gradient(to bottom, #21252a, #000000);
            border: 1px solid #555555;
        }

        body.dark-mode .delete-button:hover {
            background: linear-gradient(to bottom, #516672, #000000);
            border: 2px solid #c7e0ff;
        }

        .add-button,
        .export-button {
          background: linear-gradient(to bottom, #ffffff, #f8feff);
          border: 2px solid #e9eff4;
          color: #000;
          font-size: 1rem;
          font-weight: bold;
          padding: 12px 20px;
          border-radius: 5px;
          cursor: pointer;
          transition: background 0.3s ease, color 0.3s ease;
          margin: 20px auto;
        }

        .add-button:hover,
        .export-button:hover {
            background: linear-gradient(to bottom, #ffffff, #d6fafd);
            color: #000;
            border-color: #91a8c1;
        }

        .hidden {
            display: none;
        }

        body.dark-mode .add-button,
        body.dark-mode .export-button {
            color: #f0f0f0;
            background: linear-gradient(to bottom, #21252a, #000000);
            border: 2px solid #ffffff;
        }

        body.dark-mode .add-button:hover,
        body.dark-mode .export-button:hover {
            background: linear-gradient(to bottom, #516672, #000000);
            border: 2px solid #c7e0ff;
        }

        .dark-mode-toggle {
            position: fixed;
            bottom: 20px;
            left: 20px;
            width: 30px; 
            height: 30px; 
            background-color: #ffffff; 
            border: none; 
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 10; 

            visibility: hidden;
        }

        #darkModeIcon {
          width: 30px; 
          height: 30px; 
          transition: filter 0.3s ease; 
          visibility: visible;
        }

        body.dark-mode #darkModeIcon {
          filter: invert(1); 
        }

        .dark-mode-toggle.dark {
            background-color: #000000; 
        }

        .search-container {
          position: sticky;
          top: 20px; 
          z-index: 1000; 
          text-align: center;
          margin-left: 20px;
          margin-right: 20px;
          margin-bottom: 20px;
        }

        .search-bar {
          width: 90%;
          max-width: 500px;
          padding: 10px;
          font-size: 1rem;
          border: 2px solid #e9eff4;
          border-radius: 8px;
          outline: none;
          transition: border-color 0.3s ease;
        }

        .search-bar:focus {
            border-color: #91a8c1;
        }

        body.dark-mode .search-bar {
            background: #222;
            color: #fff;
            border: 2px solid #fff;
        }

        body.dark-mode .search-bar:focus {
            border-color: #c7e0ff;
        }

        .name-editor {
            text-align: center;
            margin: 20px auto;
            padding: 10px;
        }

        .name-editor label {
          font-size: 1.2rem;
          margin-right: 20px; 
          margin-bottom: 10px; 
          display: inline-block; 
        }

        .name-input {
            width: 90%;
            max-width: 500px;
            padding: 10px;
            font-size: 1rem;
            border: 2px solid #e9eff4;
            border-radius: 8px;
            outline: none;
            transition: border-color 0.3s ease;
        }

        .name-input:focus {
            border-color: #91a8c1;
        }

        body.dark-mode .name-input {
            background: #222;
            color: #fff;
            border: 2px solid #fff;
        }

        body.dark-mode .name-input:focus {
            border-color: #c7e0ff;
        }

        .discovery-container {
            display: flex;
            align-items: center;
            margin-top: 10px;
            gap: 10px; 
        }

        .discovery-label {
            font-size: 1rem;
            color: #555; 
        }

        body.dark-mode .discovery-label {
            color: #fff; 
        }

        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 50px; 
            height: 25px; 
        }

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

        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to bottom, #ffffff, #f8feff); 
            border: 1px solid #e9eff4;
            transition: 0.4s; 
            border-radius: 25px; 
        }

        .slider:hover {
          border-color: #91a8c1;
        }

        .slider:hover:before {
          background-color: #91a8c1;
        }

        body.dark-mode .slider:hover {
          border-color: #c7e0ff;
        }

        body.dark-mode .slider:hover:before {
          background-color: #c7e0ff;
        }

        .slider:before {
            position: absolute;
            content: "";
            height: 17px; 
            width: 17px;
            left: 2.5px; 
            bottom: 3px;
            background-color: #cbe2f5; 
            transition: 0.4s;
            border-radius: 50%; 
        }

        input:checked + .slider {
            background: linear-gradient(to bottom, #ffffff, #d6fafd); 
        }

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

        body.dark-mode .slider {
            background: linear-gradient(to bottom, #21252a, #000000); 
            border: 1px solid #e9eff4;
        }

        body.dark-mode .slider:before {
            background-color: #ffffff; 
        }

        body.dark-mode input:checked + .slider {
            background: linear-gradient(to bottom, #516672, #000000); 
        }

        .or-text {
          font-size: 1rem;
          color: #555;
          white-space: nowrap; 
        }

        body.dark-mode .or-text {
          color: #aaa;
        }

        .create-save-button {
          background: linear-gradient(to bottom, #ffffff, #f8feff);
          border: 2px solid #e9eff4;
          color: #000;
          font-size: 1rem;
          font-weight: bold;
          padding: 12px 20px;
          border-radius: 5px;
          cursor: pointer;
          transition: background 0.3s ease, color 0.3s ease;
        }

        .create-save-button:hover {
          background: linear-gradient(to bottom, #ffffff, #d6fafd);
          border-color: #91a8c1;
        }

        body.dark-mode .create-save-button {
          color: #f0f0f0;
          background: linear-gradient(to bottom, #21252a, #000000);
          border: 2px solid #ffffff;
        }

        body.dark-mode .create-save-button:hover {
          background: linear-gradient(to bottom, #516672, #000000);
          border-color: #c7e0ff;
        }

        .custom-upload-button,
        .create-save-button {
          flex-shrink: 0; 
        }

        .add-button,
        .export-button {
          flex-shrink: 0; 
        }