.container6 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 30px 20px 20px 20px;
        }

        .logo22 {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding-top: 100px;
            margin-bottom: 15px;
        }

        .logo22 i {
            font-size: 32px;
            color: var(--primary-color);
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .tagline {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .card {
            background: var(--white);
            border-radius: 12px;
            box-shadow: var(--shadow);
            padding: 30px;
            margin-bottom: 30px;
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }

        .upload-area {
            border: 2px dashed #e5e7eb;
            border-radius: 12px;
            padding: 60px 20px;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
            background: var(--bg-light);
            position: relative;
            overflow: hidden;
        }

        .upload-area:hover {
            border-color: var(--primary-color);
            background: rgba(99, 102, 241, 0.05);
        }

        .upload-area.dragover {
            border-color: var(--primary-color);
            background: rgba(99, 102, 241, 0.1);
            transform: scale(1.02);
        }

        .upload-icon {
            font-size: 48px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .upload-text {
            font-size: 1.2rem;
            font-weight: 500;
            margin-bottom: 10px;
        }

        .upload-subtext {
            color: var(--text-light);
            margin-bottom: 20px;
        }

        .file-input {
            display: none;
        }

        .btn {
            background: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            font-size: 16px;
            font-weight: 500;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn:disabled {
            background: var(--text-light);
            cursor: not-allowed;
            transform: none;
        }

        .btn-secondary {
            background: var(--bg-light);
            color: var(--text-dark);
        }

        .btn-secondary:hover {
            background: #e5e7eb;
        }

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

        .btn-success:hover {
            background: #059669;
        }

        .conversion-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .option-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .option-label {
            font-weight: 500;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .option-label i {
            color: var(--primary-color);
        }

        select, input[type="range"], input[type="number"] {
            width: 100%;
            padding: 10px;
            border: 1px solid #e5e7eb;
            border-radius: 6px;
            font-size: 16px;
            background: var(--white);
            transition: var(--transition);
        }

        select:focus, input[type="range"]:focus, input[type="number"]:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .quality-control {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .quality-value {
            background: var(--bg-light);
            padding: 6px 12px;
            border-radius: 6px;
            font-weight: 500;
            min-width: 50px;
            text-align: center;
        }

        .preview-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .preview-box {
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            overflow: hidden;
            background: var(--white);
            display: flex;
            flex-direction: column;
        }

        .preview-header {
            background: var(--bg-light);
            padding: 15px;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .preview-header i {
            color: var(--primary-color);
        }

        .preview-body {
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-grow: 1;
            min-height: 300px;
            overflow: hidden;
            position: relative;
        }

        .preview-image {
            max-width: 100%;
            max-height: 100%;
            width: auto;
            height: auto;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        .file-info {
            background: var(--bg-light);
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 20px;
        }

        .file-info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
        }

        .info-item {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .info-label {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .info-value {
            font-weight: 500;
        }

        .action-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .download-section {
            text-align: center;
            padding: 20px;
            background: rgba(16, 185, 129, 0.1);
            border-radius: 12px;
            margin-top: 20px;
            display: none;
        }

        .download-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--success-color);
            font-weight: 500;
            text-decoration: none;
            font-size: 1.1rem;
            padding: 12px 24px;
            border: 2px solid var(--success-color);
            border-radius: 8px;
            transition: var(--transition);
        }

        .download-link:hover {
            background: var(--success-color);
            color: var(--white);
        }

        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--white);
            padding: 16px 24px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 12px;
            transform: translateY(100px);
            opacity: 0;
            transition: var(--transition);
            z-index: 1000;
            max-width: 400px;
        }

        .toast.show {
            transform: translateY(0);
            opacity: 1;
        }

        .toast.success {
            border-left: 4px solid var(--success-color);
        }

        .toast.error {
            border-left: 4px solid #ef4444;
        }

        .toast.warning {
            border-left: 4px solid #f59e0b;
        }

        .toast-icon {
            font-size: 20px;
        }

        .toast.success .toast-icon {
            color: var(--success-color);
        }

        .toast.error .toast-icon {
            color: #ef4444;
        }

        .toast.warning .toast-icon {
            color: #f59e0b;
        }

        .format-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .format-card {
            background: var(--white);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }

        .format-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }

        .format-icon {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .format-name {
            font-weight: 600;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }

        .format-desc {
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .progress-bar {
            height: 6px;
            background: var(--bg-light);
            border-radius: 3px;
            overflow: hidden;
            margin: 20px 0;
            display: none;
        }

        .progress-fill {
            height: 100%;
            background: var(--primary-color);
            width: 0%;
            transition: width 0.3s ease;
        }

        .format-badge {
            background: var(--primary-color);
            color: var(--white);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 4px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        @media (max-width: 768px) {
            .preview-container {
                grid-template-columns: 1fr;
            }
            
            .conversion-options {
                grid-template-columns: 1fr;
            }
            
            h1 {
                font-size: 2rem;
            }
        }