:root {
            --primary: #6c5ce7;
            --primary-light: #a29bfe;
            --primary-dark: #4d44db;
            --success: #00b894;
            --success-light: rgba(0, 184, 148, 0.1);
            --danger: #d63031;
            --light: #f8f9fa;
            --dark: #2d3436;
            --gray: #636e72;
            --white: #ffffff;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --border-radius: 8px;
        }

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

        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #dfe6f0 100%);
            color: var(--dark);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            line-height: 1.6;
        }

        .image-compressor {
            width: 100%;
            max-width: 800px;
            background: var(--white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .compressor-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--white);
            padding: 25px;
            text-align: center;
        }

        .compressor-header h1 {
            font-size: 2rem;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .compressor-header p {
            font-size: 0.95rem;
            opacity: 0.9;
            max-width: 500px;
            margin: 0 auto;
            font-weight: 300;
        }

        .compressor-content {
            padding: 25px;
        }

        .upload-area {
            border: 2px dashed var(--primary-light);
            border-radius: var(--border-radius);
            padding: 30px 20px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            margin-bottom: 20px;
            background: rgba(162, 155, 254, 0.05);
        }

        .upload-area.highlight {
            border-color: var(--primary);
            background: rgba(162, 155, 254, 0.1);
        }

        .upload-area i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .upload-area h3 {
            margin-bottom: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 1.1rem;
        }

        .upload-area p {
            color: var(--gray);
            margin-bottom: 0;
            font-size: 0.9rem;
        }

        .upload-area .browse-text {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
        }

        #file-input {
            display: none;
        }

        .options-section {
            margin: 20px 0;
        }

        .options-title {
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--dark);
            font-size: 1rem;
        }

        .option-group {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 15px;
        }

        .option-item {
            flex: 1;
            min-width: 150px;
        }

        .option-item label {
            display: block;
            margin-bottom: 6px;
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 500;
        }

        .option-item select,
        .option-item input {
            width: 100%;
            padding: 10px 12px;
            border: 2px solid #e0e0e0;
            border-radius: var(--border-radius);
            font-family: 'Poppins', sans-serif;
            font-size: 0.9rem;
        }

        .slider-container {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .slider-value {
            min-width: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--dark);
        }

        input[type="range"] {
            width: 100%;
            height: 6px;
            background: #e0e0e0;
            border-radius: 3px;
            outline: none;
        }

        input[type="range"]::-webkit-slider-thumb {
            width: 18px;
            height: 18px;
            background: var(--primary);
            border-radius: 50%;
            cursor: pointer;
        }

        .checkbox-option {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }

        .checkbox-option label {
            font-size: 0.85rem;
            color: var(--dark);
            cursor: pointer;
        }

        .action-btns {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .btn {
            padding: 12px 20px;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex: 1;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
        }

        .btn-primary:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            background: var(--primary);
        }

        .btn-secondary {
            background: var(--white);
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--white);
        }

        .loading {
            display: none;
            text-align: center;
            margin: 20px 0;
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 3px solid rgba(108, 92, 231, 0.2);
            border-top: 3px solid var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 12px;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .progress-container {
            width: 100%;
            background: rgba(108, 92, 231, 0.1);
            border-radius: 10px;
            margin: 12px 0;
            overflow: hidden;
            display: none;
        }

        .progress-bar {
            height: 6px;
            background: linear-gradient(90deg, var(--primary-light), var(--primary));
            width: 0%;
            transition: width 0.3s ease;
        }

        /* Image Previews */
        .preview-container {
            display: none;
            margin: 20px 0;
        }

        .preview-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 10px;
            margin-bottom: 15px;
        }

        .preview-item {
            position: relative;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 1/1;
            background: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .preview-item img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }

        .preview-item .file-name {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 4px 6px;
            font-size: 0.7rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .preview-item .file-size {
            position: absolute;
            top: 5px;
            right: 5px;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 2px 4px;
            border-radius: 3px;
            font-size: 0.6rem;
        }

        .output-section {
            display: none;
            margin-top: 20px;
            background: var(--success-light);
            border-radius: var(--border-radius);
            padding: 15px;
            border: 1px solid rgba(0, 184, 148, 0.3);
        }

        .download-container {
            text-align: center;
        }

        .download-container h3 {
            color: var(--success);
            margin-bottom: 8px;
        }

        .download-container p {
            color: var(--gray);
            margin-bottom: 15px;
            font-size: 0.9rem;
        }

        .download-options {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 15px;
        }

        .download-option {
            background: rgba(0, 184, 148, 0.2);
            border-radius: var(--border-radius);
            padding: 10px 12px;
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            font-size: 0.85rem;
            min-width: 110px;
            justify-content: center;
            text-decoration: none;
            color: var(--dark);
            transition: var(--transition);
            border: 1px solid rgba(0, 184, 148, 0.3);
        }

        .download-option:hover {
            background: rgba(0, 184, 148, 0.3);
        }

        .download-option i {
            color: var(--success);
        }

        .premium-features {
            margin-top: 20px;
            padding: 15px;
            background: rgba(253, 203, 110, 0.1);
            border-radius: var(--border-radius);
            border: 1px dashed #fdcb6e;
            text-align: center;
        }

        .premium-features h4 {
            color: #e17055;
            margin-bottom: 8px;
        }

        .premium-features ul {
            list-style: none;
            text-align: left;
            margin: 10px 0;
            padding-left: 20px;
        }

        .premium-features li {
            margin-bottom: 5px;
            font-size: 0.85rem;
            position: relative;
        }

        .premium-features li:before {
            content: "✓";
            color: #00b894;
            position: absolute;
            left: -20px;
        }

        .error-message {
            color: var(--danger);
            background: rgba(214, 48, 49, 0.1);
            padding: 10px 12px;
            border-radius: var(--border-radius);
            margin-bottom: 16px;
            display: none;
            font-size: 0.85rem;
        }

        .upload-status {
            display: none;
            text-align: center;
            margin: 10px 0;
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .stats-container {
            display: flex;
            justify-content: space-between;
            margin-top: 15px;
            font-size: 0.85rem;
        }

        .stat-item {
            text-align: center;
            flex: 1;
            padding: 8px;
            background: rgba(108, 92, 231, 0.05);
            border-radius: var(--border-radius);
        }

        .stat-item span {
            display: block;
            font-weight: 600;
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .image-compressor {
                max-width: 95%;
            }
            
            .compressor-header {
                padding: 20px 15px;
            }
            
            .compressor-header h1 {
                font-size: 1.8rem;
            }
            
            .compressor-content {
                padding: 20px;
            }
            
            .option-item {
                min-width: 100%;
            }

            .action-btns {
                flex-direction: column;
            }

            .preview-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .download-options {
                flex-direction: column;
            }

            .download-option {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .preview-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }