:root {
            --primary-color: #6e45e2;
            --secondary-color: #88d3ce;
            --text-color: #333;
            --bg-color: #f5f7fa;
            --card-bg: #ffffff;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        .dark-mode {
            --primary-color: #8a63f2;
            --secondary-color: #63f2c8;
            --text-color: #f0f0f0;
            --bg-color: #121212;
            --card-bg: #1e1e1e;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            transition: var(--transition);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            animation: fadeInDown 0.8s ease-out;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }

        .logo i {
            font-size: 2rem;
        }

        .controls {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .theme-toggle {
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            padding: 0.5rem;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .theme-toggle:hover {
            background-color: rgba(0, 0, 0, 0.1);
        }

        .dark-mode .theme-toggle:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .language-selector {
            position: relative;
        }

        .language-btn {
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 1rem;
            cursor: pointer;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition);
            background-color: rgba(0, 0, 0, 0.05);
        }

        .dark-mode .language-btn {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .language-btn:hover {
            background-color: rgba(0, 0, 0, 0.1);
        }

        .dark-mode .language-btn:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .language-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background-color: var(--card-bg);
            border-radius: 10px;
            box-shadow: var(--shadow);
            padding: 0.5rem 0;
            width: 150px;
            z-index: 100;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: var(--transition);
        }

        .language-selector:hover .language-dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .language-option {
            padding: 0.5rem 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .language-option:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }

        .dark-mode .language-option:hover {
            background-color: rgba(255, 255, 255, 0.05);
        }

        .main-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            animation: fadeIn 1s ease-out;
        }

        @media (max-width: 768px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }

        .upload-section {
            background-color: var(--card-bg);
            border-radius: 15px;
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .upload-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                45deg,
                transparent,
                rgba(var(--primary-color-rgb), 0.1),
                transparent
            );
            transform: rotate(45deg);
            animation: shimmer 3s infinite linear;
            z-index: 0;
        }

        .upload-content {
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .upload-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            transition: var(--transition);
        }

        .upload-section:hover .upload-icon {
            transform: translateY(-5px);
        }

        .upload-title {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }

        .upload-description {
            margin-bottom: 2rem;
            color: var(--text-color);
            opacity: 0.8;
        }

        .file-input {
            display: none;
        }

        .upload-btn {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(110, 69, 226, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .upload-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(110, 69, 226, 0.4);
        }

        .upload-btn:active {
            transform: translateY(0);
        }

        .settings-section {
            background-color: var(--card-bg);
            border-radius: 15px;
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .settings-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .settings-group {
            margin-bottom: 1.5rem;
        }

        .settings-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
        }

        .slider-container {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .slider {
            flex: 1;
            -webkit-appearance: none;
            height: 8px;
            border-radius: 4px;
            background: rgba(0, 0, 0, 0.1);
            outline: none;
        }

        .dark-mode .slider {
            background: rgba(255, 255, 255, 0.1);
        }

        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary-color);
            cursor: pointer;
            transition: var(--transition);
        }

        .slider::-webkit-slider-thumb:hover {
            transform: scale(1.2);
        }

        .slider-value {
            min-width: 30px;
            text-align: center;
            font-weight: 600;
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.5rem;
        }

        .checkbox {
            width: 18px;
            height: 18px;
            accent-color: var(--primary-color);
            cursor: pointer;
        }

        .checkbox-label {
            cursor: pointer;
        }

        .color-picker {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .color-label {
            width: 80px;
        }

        .color-input {
            width: 60px;
            height: 30px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            padding: 0;
        }

        .color-input::-webkit-color-swatch {
            border: none;
            border-radius: 5px;
        }

        .color-input::-moz-color-swatch {
            border: none;
            border-radius: 5px;
        }

        .preview-section {
            grid-column: span 2;
            background-color: var(--card-bg);
            border-radius: 15px;
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .preview-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .preview-container {
            width: 100%;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .image-wrapper {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .image-wrapper:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

        .dark-mode .image-wrapper:hover {
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }

        .image-label {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 0.5rem;
            text-align: center;
            font-size: 0.9rem;
        }

        .original-image, .pixelated-image {
            max-width: 100%;
            max-height: 300px;
            display: block;
        }

        .action-btns {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .action-btn {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(110, 69, 226, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .action-btn.secondary {
            background: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
            box-shadow: none;
        }

        .action-btn.secondary:hover {
            background: rgba(110, 69, 226, 0.1);
        }

        .action-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(110, 69, 226, 0.4);
        }

        .action-btn:active {
            transform: translateY(0);
        }

        .github-btn {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background-color: #333;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: var(--transition);
            z-index: 100;
            animation: pulse 2s infinite;
        }

        .github-btn:hover {
            transform: translateY(-5px) scale(1.1);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
            animation: none;
        }

        .loading {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            flex-direction: column;
        }

        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: var(--primary-color);
            animation: spin 1s ease-in-out infinite;
            margin-bottom: 1rem;
        }

        .loading-text {
            color: white;
            font-size: 1.2rem;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }

        @keyframes shimmer {
            0% { transform: rotate(45deg) translate(-30%, -30%); }
            100% { transform: rotate(45deg) translate(30%, 30%); }
        }

        @media (max-width: 600px) {
            header {
                flex-direction: column;
                gap: 1rem;
                align-items: flex-start;
            }
            
            .controls {
                width: 100%;
                justify-content: space-between;
            }
            
            .preview-container {
                flex-direction: column;
                align-items: center;
            }
            
            .github-btn {
                bottom: 1rem;
                right: 1rem;
                width: 40px;
                height: 40px;
                font-size: 1.2rem;
            }
        }