.container4 {
            max-width: 1200px;
            margin: 0 auto;
            background: var(--white);
            border-radius: 16px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .hde {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #4338ca 100%);
                        margin-top: 80px ;
            color: var(--white);
            padding: 25px 40px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .logo4 {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
        }

        .logo4 h1 {
            font-size: 28px;
            font-weight: 700;
        }


        .main-content {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 30px;
            padding: 30px;
        }

        .card {
            background: var(--white);
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            padding: 25px;
            transition: var(--transition);
            margin-bottom: 25px;
        }

        .card:hover {
            box-shadow: var(--shadow);
        }

        .card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--bg-light);
        }

        .card-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
        }

        .upload-area {
            border: 2px dashed var(--primary-dark);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
            background: rgba(79, 70, 229, 0.05);
            cursor: pointer;
            transition: var(--transition);
        }

        .upload-area:hover, .upload-area.dragover {
            background: rgba(79, 70, 229, 0.1);
            border-color: #4338ca;
        }

        .upload-area i {
            font-size: 48px;
            color: var(--primary-dark);
            margin-bottom: 15px;
        }

        .upload-area h3 {
            font-size: 22px;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }

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

        .file-input {
            display: none;
        }

        .btn {
            background: var(--primary-dark);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn:hover {
            background: #4338ca;
            transform: translateY(-2px);
        }

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

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

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

        .btn-danger:hover {
            background: #4338ca;
        }

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

        .btn-warning:hover {
            background: #7c3aed;
        }

        .btn-block {
            width: 100%;
            justify-content: center;
        }

        .file-list {
            margin-top: 20px;
        }

        .file-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px;
            border-radius: 8px;
            background: var(--bg-light);
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .file-item:hover {
            background: #e5e7eb;
        }

        .file-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .file-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-dark);
            color: var(--white);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .file-details h4 {
            font-size: 16px;
            margin-bottom: 4px;
        }

        .file-details p {
            font-size: 14px;
            color: var(--text-light);
        }

        .file-actions {
            display: flex;
            gap: 10px;
        }

        .icon-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--white);
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .icon-btn:hover {
            background: var(--bg-light);
            color: var(--primary-dark);
        }

        .settings-group {
            margin-bottom: 20px;
        }

        .settings-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--bg-light);
            border-radius: 8px;
            font-size: 15px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-dark);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
        }

        .slider-container {
            margin-top: 10px;
        }

        .slider {
            width: 100%;
            height: 6px;
            border-radius: 3px;
            background: var(--bg-light);
            outline: none;
            -webkit-appearance: none;
        }

        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-dark);
            cursor: pointer;
        }

        .slider::-moz-range-thumb {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary-dark);
            cursor: pointer;
            border: none;
        }

        .slider-value {
            display: flex;
            justify-content: space-between;
            margin-top: 5px;
            font-size: 14px;
            color: var(--text-light);
        }

        .progress-container {
            margin-top: 20px;
        }

        .progress-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .progress-bar {
            height: 10px;
            background: var(--bg-light);
            border-radius: 5px;
            overflow: hidden;
        }

        .progress {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-dark), var(--secondary-color));
            width: 0%;
            transition: width 0.3s ease;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 20px;
        }

        .stat-card {
            background: var(--bg-light);
            padding: 15px;
            border-radius: 8px;
            text-align: center;
        }

        .stat-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

        .stat-value.negative {
            color: var(--primary-dark);
        }

        .stat-value.positive {
            color: var(--success-color);
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }

        .preview-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 20px;
        }

        .preview-box {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .preview-header {
            background: var(--primary-dark);
            color: var(--white);
            padding: 10px 15px;
            font-weight: 600;
            text-align: center;
        }

        .preview-video {
            width: 100%;
            height: 250px;
            background: #000;
            object-fit: contain;
        }

        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }

        .notification {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: var(--white);
            padding: 15px 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 15px;
            transform: translateY(100px);
            opacity: 0;
            transition: var(--transition);
            z-index: 1000;
            max-width: 400px;
        }

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

        .notification-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .notification.success .notification-icon {
            background: rgba(16, 185, 129, 0.2);
            color: var(--success-color);
        }

        .notification.error .notification-icon {
            background: rgba(79, 70, 229, 0.2);
            color: var(--primary-dark);
        }

        .notification.warning .notification-icon {
            background: rgba(139, 92, 246, 0.2);
            color: var(--secondary-color);
        }

        .notification.info .notification-icon {
            background: rgba(79, 70, 229, 0.2);
            color: var(--primary-dark);
        }

        .notification-content h4 {
            margin-bottom: 4px;
            font-size: 16px;
        }

        .notification-content p {
            font-size: 14px;
            color: var(--text-light);
        }

        .close-notification {
            margin-left: 15px;
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            font-size: 18px;
        }

        .preset-buttons {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 10px;
            margin-top: 15px;
        }

        .preset-btn {
            padding: 10px;
            border: 1px solid var(--bg-light);
            background: var(--white);
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }

        .preset-btn:hover, .preset-btn.active {
            border-color: var(--primary-dark);
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary-dark);
        }

        .hidden {
            display: none;
        }

        .info-box {
            background: rgba(79, 70, 229, 0.1);
            border-left: 4px solid var(--primary-dark);
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .info-box p {
            margin: 0;
            color: var(--primary-dark);
            font-size: 14px;
        }

        .warning-box {
            background: rgba(139, 92, 246, 0.1);
            border-left: 4px solid var(--secondary-color);
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .warning-box p {
            margin: 0;
            color: var(--secondary-color);
            font-size: 14px;
        }

        .success-box {
            background: rgba(16, 185, 129, 0.1);
            border-left: 4px solid var(--success-color);
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .success-box p {
            margin: 0;
            color: var(--success-color);
            font-size: 14px;
        }

        .smart-box {
            background: rgba(16, 185, 129, 0.1);
            border-left: 4px solid var(--success-color);
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .smart-box p {
            margin: 0;
            color: var(--success-color);
            font-size: 14px;
        }

        .smart-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 10px;
            font-size: 13px;
            color: var(--text-light);
        }

        @media (max-width: 1200px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-content {
                padding: 20px;
            }
            
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .preview-container {
                grid-template-columns: 1fr;
            }
            
            .action-buttons {
                flex-direction: column;
            }
        }
    
    
    /*section */
    .how-it-works-bottom {
    padding: 60px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, #e5e7eb 100%);
    margin-top: 40px;
}

.how-it-works-bottom .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.how-it-works-bottom h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

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

.feature h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.feature p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
    flex-grow: 1;
}

.privacy-section {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.privacy-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    text-align: center;
    flex-direction: column;
}

.privacy-icon {
    width: 80px;
    height: 80px;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.privacy-icon i {
    font-size: 40px;
    color: var(--primary-dark);
}

.privacy-header h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 0;
}

.privacy-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.privacy-point {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.point-icon {
    width: 36px;
    height: 36px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.point-icon i {
    font-size: 18px;
    color: var(--success-color);
}

.point-content h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 10px 0;
}

.point-content p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.privacy-pledge {
    background: rgba(79, 70, 229, 0.05);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.pledge-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pledge-icon i {
    font-size: 30px;
    color: var(--white);
}

.pledge-content h4 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-dark);
    margin: 0 0 10px 0;
}

.pledge-content p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.cta-section {
    text-align: center;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.cta-section h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
    border-radius: 10px;
}

@media (max-width: 768px) {
    .how-it-works-bottom {
        padding: 40px 0;
    }
    
    .how-it-works-bottom h2 {
        font-size: 28px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature {
        padding: 20px;
    }
    
    .cta-section {
        padding: 30px 20px;
    }
    
    .cta-section h3 {
        font-size: 24px;
    }
    
    .privacy-section {
        padding: 30px 20px;
    }
    
    .privacy-header h3 {
        font-size: 28px;
    }
    
    .privacy-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .privacy-pledge {
        flex-direction: column;
        text-align: center;
    }
    
    .pledge-content {
        text-align: center;
    }
}