.converter-container {
            max-width: 1400px;
            margin: 30px auto;
            background: white;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .tool-header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 40px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .tool-header::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0) 70%);
            transform: rotate(30deg);
        }
        
        .tool-header h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            font-weight: 700;
            position: relative;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        
        .tool-header p {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
        }
        
        .converter-body {
            display: flex;
            padding: 30px;
            gap: 30px;
            flex-wrap: wrap;
        }
        
        .upload-section {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, #f8faff 0%, #f0f5ff 100%);
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            position: relative;
            overflow: hidden;
        }
        
        .controls-section {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, #f8faff 0%, #f0f5ff 100%);
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        
        .preview-section {
            display: flex;
            gap: 30px;
            flex: 100%;
            margin-top: 20px;
        }
        
        .preview-column {
            flex: 1;
            background: white;
            border-radius: 20px;
            padding: 30px;
            box-shadow: var(--card-shadow);
            text-align: center;
            min-width: 300px;
            transition: var(--transition);
            border: 1px solid rgba(67, 97, 238, 0.1);
        }
        
        .preview-title {
            font-size: 1.5rem;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--light-gray);
            color: var(--dark);
            font-weight: 600;
            position: relative;
        }
        
        .preview-title::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 80px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        
        .preview-box {
            background: #f8f9fa;
            border: 2px dashed var(--light-gray);
            border-radius: 16px;
            height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            overflow: hidden;
            position: relative;
            transition: var(--transition);
        }
        
        .preview-box.active {
            border-color: var(--primary);
            background: rgba(67, 97, 238, 0.03);
        }
        
        .image-container {
            max-width: 100%;
            max-height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            height: 100%;
        }
        
        .preview-image {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }
        
        .image-info {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .info-card {
            background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
            padding: 18px;
            border-radius: 12px;
            min-width: 140px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        
        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(67, 97, 238, 0.15);
        }
        
        .info-card h4 {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 10px;
            font-weight: 500;
        }
        
        .info-card p {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
        }
        
        .format-card {
            background: white;
            border-radius: 16px;
            padding: 25px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(67, 97, 238, 0.1);
        }
        
        .format-card h3 {
            margin-bottom: 25px;
            color: var(--dark);
            font-size: 1.4rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .format-card h3 i {
            color: var(--primary);
        }
        
        .format-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .format-option {
            border: 2px solid var(--light-gray);
            border-radius: 12px;
            padding: 18px 10px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            background: white;
        }
        
        .format-option:hover {
            border-color: var(--primary);
            background: rgba(67, 97, 238, 0.05);
            transform: translateY(-3px);
        }
        
        .format-option.active {
            border-color: var(--primary);
            background: rgba(67, 97, 238, 0.1);
            box-shadow: 0 6px 15px rgba(67, 97, 238, 0.15);
            transform: translateY(-3px);
        }
        
        .format-option i {
            font-size: 2.2rem;
            margin-bottom: 12px;
            color: var(--primary);
        }
        
        .quality-control {
            margin-top: 25px;
        }
        
        .quality-control label {
            display: block;
            margin-bottom: 15px;
            font-weight: 500;
            color: var(--dark);
            font-size: 1.1rem;
        }
        
        .slider-container {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .slider-container input {
            flex: 1;
        }
        
        .slider-container span {
            min-width: 50px;
            font-weight: 700;
            color: var(--primary);
            font-size: 1.2rem;
        }
        
        input[type="range"] {
            -webkit-appearance: none;
            height: 10px;
            border-radius: 5px;
            background: var(--light-gray);
            outline: none;
        }
        
        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary);
            cursor: pointer;
            box-shadow: 0 3px 8px rgba(67, 97, 238, 0.5);
            border: 3px solid white;
            transition: var(--transition);
        }
        
        input[type="range"]::-webkit-slider-thumb:hover {
            transform: scale(1.1);
        }
        
        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 10px;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 16px 30px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            flex: 1;
            min-width: 180px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.4);
        }
        
        .btn-outline {
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        
        .btn-outline:hover {
            background: rgba(67, 97, 238, 0.05);
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.2);
        }
        
        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none !important;
            box-shadow: none !important;
        }
        
        .upload-area {
            border: 3px dashed var(--light-gray);
            border-radius: 20px;
            padding: 50px 20px;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            margin-bottom: 25px;
            background: white;
            position: relative;
            overflow: hidden;
        }
        
        .upload-area:hover {
            border-color: var(--primary);
            background: rgba(67, 97, 238, 0.03);
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(67, 97, 238, 0.1);
        }
        
        .upload-area i {
            font-size: 4.5rem;
            color: var(--primary);
            margin-bottom: 25px;
            transition: var(--transition);
        }
        
        .upload-area:hover i {
            transform: scale(1.1);
            color: var(--secondary);
        }
        
        .upload-area h3 {
            font-size: 1.7rem;
            margin-bottom: 15px;
            color: var(--dark);
            font-weight: 600;
        }
        
        .upload-area p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        
        .file-input {
            display: none;
        }
        
        .conversion-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 25px;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .stat-card {
            background: white;
            border-radius: 16px;
            padding: 20px;
            flex: 1;
            min-width: 200px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            text-align: center;
            border: 1px solid rgba(67, 97, 238, 0.1);
        }
        
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .stat-card h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--dark);
        }
        
        .stat-card p {
            color: var(--gray);
            font-size: 1.1rem;
        }
        
        .size-change {
            font-weight: 700;
            font-size: 1.2rem;
        }
        
        .size-change.positive {
            color: var(--success);
        }
        
        .size-change.negative {
            color: var(--warning);
        }
        
        .tool-footer {
            background: var(--dark);
            color: white;
            padding: 40px 30px;
            text-align: center;
            position: relative;
        }
        
        .tool-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 70%);
        }
        
        .tool-footer p {
            max-width: 800px;
            margin: 0 auto 25px;
            color: #bdc1c6;
            font-size: 1.1rem;
            position: relative;
        }
        
        .placeholder-content {
            color: var(--gray);
            text-align: center;
            padding: 20px;
        }
        
        .placeholder-content i {
            font-size: 5rem;
            margin-bottom: 25px;
            color: var(--light-gray);
            opacity: 0.7;
        }
        
        .placeholder-content p {
            font-size: 1.2rem;
            max-width: 300px;
            margin: 0 auto;
        }
        
        .loading-spinner {
            display: none;
            width: 60px;
            height: 60px;
            border: 5px solid rgba(67, 97, 238, 0.2);
            border-top: 5px solid var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 30px;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .conversion-time {
            margin-top: 15px;
            font-size: 1rem;
            color: var(--gray);
            font-weight: 500;
        }
        
        /* Responsive Design */
        @media (max-width: 1200px) {
            .preview-section {
                flex-direction: column;
            }
        }
        
        @media (max-width: 992px) {
            .tool-header h1 {
                font-size: 2.4rem;
            }
            
            .converter-body {
                padding: 25px;
            }
            
            .upload-area {
                padding: 40px 20px;
            }
        }
        
        @media (max-width: 768px) {
            .tool-header {
                padding: 30px 20px;
            }
            
            .tool-header h1 {
                font-size: 2rem;
            }
            
            .converter-body {
                padding: 20px;
                gap: 20px;
            }
            
            .preview-box {
                height: 320px;
            }
            
            .btn {
                min-width: 100%;
            }
        }
        
        @media (max-width: 480px) {
            
            
            .tool-header h1 {
                font-size: 1.8rem;
            }
            
            .tool-header p {
                font-size: 1rem;
            }
            
            .upload-area h3 {
                font-size: 1.4rem;
            }
            
            .preview-title {
                font-size: 1.3rem;
            }
            
            .format-card {
                padding: 20px;
            }
            
            .format-grid {
                grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
            }
            
            .info-card {
                min-width: 100%;
            margin-bottom: 10px;
            padding: 15px;
            text-align: center;
            display: flex;
                justify-content: space-between;
                align-items: center;
            }
            
            .info-card h4, .info-card p {
                margin: 0;
            }
            
            .conversion-stats {
                flex-direction: column;
            }
        }