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

        :root {
            --primary-blue: #0066FF;
            --secondary-blue: #4D94FF;
            --light-blue: #E6F0FF;
            --dark-blue: #003D99;
            --white: #FFFFFF;
            --gray: #F5F7FA;
            --dark-gray: #6B7280;
            --success: #10B981;
            --error: #EF4444;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 50%, var(--light-blue) 100%);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .bg-animation {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: -1;
            opacity: 0.5;
            background:
                radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(77, 148, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(0, 61, 153, 0.05) 0%, transparent 50%);
            animation: bgMove 20s ease infinite;
        }

        @keyframes bgMove {

            0%,
            100% {
                transform: translate(0, 0) scale(1);
            }

            25% {
                transform: translate(-20px, -20px) scale(1.05);
            }

            50% {
                transform: translate(20px, -10px) scale(1.1);
            }

            75% {
                transform: translate(-10px, 20px) scale(1.05);
            }
        }

        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0, 102, 255, 0.1);
            padding: 1.5rem 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
            animation: slideDown 0.5s ease;
        }

        @keyframes slideDown {
            from {
                transform: translateY(-100%);
                opacity: 0;
            }

            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-blue);
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {

            0%,
            100% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.05);
            }
        }

        .features-badge {
            display: flex;
            gap: 10px;
        }

        .badge {
            background: var(--light-blue);
            color: var(--primary-blue);
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            animation: fadeIn 1s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(10px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .container {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 2rem;
        }

        .upload-section {
            background: white;
            border-radius: 24px;
            padding: 3rem;
            box-shadow: 0 20px 60px rgba(0, 102, 255, 0.15);
            margin-bottom: 3rem;
            animation: scaleIn 0.5s ease;
        }

        @keyframes scaleIn {
            from {
                transform: scale(0.9);
                opacity: 0;
            }

            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        .upload-area {
            border: 3px dashed var(--secondary-blue);
            border-radius: 20px;
            padding: 4rem 2rem;
            text-align: center;
            background: linear-gradient(135deg, var(--light-blue), transparent);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .upload-area:hover {
            border-color: var(--primary-blue);
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), transparent);
            transform: translateY(-2px);
        }

        .upload-area.dragover {
            background: rgba(0, 102, 255, 0.1);
            border-color: var(--primary-blue);
            transform: scale(1.02);
        }

        .upload-icon {
            font-size: 4rem;
            color: var(--secondary-blue);
            margin-bottom: 1rem;
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0);
            }

            50% {
                transform: translateY(-10px);
            }
        }

        .upload-text {
            color: var(--dark-gray);
            margin-bottom: 1rem;
        }

        .upload-text h3 {
            color: var(--dark-blue);
            margin-bottom: 0.5rem;
            font-size: 1.5rem;
        }

        .browse-btn {
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: white;
            padding: 14px 32px;
            border-radius: 12px;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            position: relative;
            overflow: hidden;
        }

        .browse-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s ease;
        }

        .browse-btn:hover::before {
            left: 100%;
        }

        .browse-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 102, 255, 0.3);
        }

        .processing-section {
            background: white;
            border-radius: 24px;
            padding: 3rem;
            box-shadow: 0 20px 60px rgba(0, 102, 255, 0.15);
            display: none;
            animation: slideUp 0.5s ease;
        }

        @keyframes slideUp {
            from {
                transform: translateY(50px);
                opacity: 0;
            }

            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .controls {
            background: var(--gray);
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
            animation: fadeInLeft 0.5s ease;
        }

        @keyframes fadeInLeft {
            from {
                transform: translateX(-30px);
                opacity: 0;
            }

            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .control-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .control-label {
            font-size: 0.9rem;
            color: var(--dark-gray);
            font-weight: 500;
        }

        .color-picker {
            width: 50px;
            height: 50px;
            border: 3px solid white;
            border-radius: 12px;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
            transition: transform 0.2s ease;
        }

        .color-picker:hover {
            transform: scale(1.1);
        }

        .preset-colors {
            display: flex;
            gap: 8px;
        }

        .preset-color {
            width: 35px;
            height: 35px;
            border-radius: 8px;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.2s ease;
        }

        .preset-color:hover {
            transform: scale(1.15);
            border-color: var(--primary-blue);
        }

        .preset-color.active {
            border-color: var(--primary-blue);
            transform: scale(1.1);
        }

        .compare-container {
            position: relative;
            max-width: 800px;
            margin: 2rem auto;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
        }

        .compare-wrapper {
            position: relative;
            width: 100%;
            padding-bottom: 60%;
            background: var(--gray);
        }

        .compare-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: contain;
            pointer-events: none;
        }

        .compare-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 50%;
            height: 100%;
            overflow: hidden;
            pointer-events: none;
        }

        /*.compare-overlay .compare-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 800px;
    max-width: none;
    height: 100%;
    object-fit: contain;
}*/

        .compare-slider {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 100%;
            background: white;
            cursor: ew-resize;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
            z-index: 10;
        }

        .compare-slider::before {
            content: '◀ ▶';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: white;
            color: var(--primary-blue);
            padding: 8px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: bold;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
            white-space: nowrap;
        }

        .compare-labels {
            position: absolute;
            top: 10px;
            width: 100%;
            display: flex;
            justify-content: space-between;
            padding: 0 20px;
            pointer-events: none;
            z-index: 5;
        }

        .compare-label {
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* Loading Animation */
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.95);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .loading-content {
            text-align: center;
        }

        .loading-spinner {
            width: 80px;
            height: 80px;
            border: 4px solid var(--light-blue);
            border-top: 4px solid var(--primary-blue);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto 1rem;
        }

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

            100% {
                transform: rotate(360deg);
            }
        }

        .loading-text {
            color: var(--primary-blue);
            font-size: 1.2rem;
            font-weight: 600;
            animation: fadeInOut 1.5s ease infinite;
        }

        @keyframes fadeInOut {

            0%,
            100% {
                opacity: 0.5;
            }

            50% {
                opacity: 1;
            }
        }

        .loading-progress {
            width: 200px;
            height: 6px;
            background: var(--light-blue);
            border-radius: 3px;
            overflow: hidden;
            margin: 1rem auto;
        }

        .loading-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
            border-radius: 3px;
            animation: progress 2s ease infinite;
        }

        @keyframes progress {
            0% {
                width: 0%;
            }

            50% {
                width: 70%;
            }

            100% {
                width: 100%;
            }
        }

        /* Action Buttons */
        .action-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .action-btn {
            padding: 14px 28px;
            border-radius: 12px;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 102, 255, 0.3);
        }

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

        .btn-secondary:hover {
            background: var(--light-blue);
            transform: translateY(-2px);
        }

        .btn-success {
            background: linear-gradient(135deg, var(--success), #059669);
            color: white;
        }

        .btn-success:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
        }

        /* Download Animation */
        @keyframes downloadPulse {
            0% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            }

            50% {
                transform: scale(1.05);
                box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
            }

            100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
            }
        }

        .downloading {
            animation: downloadPulse 1.5s ease infinite;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 1rem;
            }

            .upload-section,
            .processing-section {
                padding: 1.5rem;
            }

            .controls {
                flex-direction: column;
                align-items: stretch;
            }

            .control-group {
                width: 100%;
                justify-content: space-between;
            }

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

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

            .compare-slider::before {
                padding: 6px 8px;
                font-size: 10px;
            }
        }

        #fileInput {
            display: none;
        }

        .toast {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: white;
            padding: 16px 24px;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            display: none;
            align-items: center;
            gap: 12px;
            animation: slideInRight 0.5s ease;
            z-index: 1001;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }

            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

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

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

        .toast-icon {
            font-size: 1.5rem;
        }

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

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

        .toast-message {
            flex: 1;
            color: var(--dark-gray);
        }

        .toast-close {
            cursor: pointer;
            color: var(--dark-gray);
            font-size: 1.2rem;
            transition: color 0.2s ease;
        }

        .toast-close:hover {
            color: var(--dark-blue);
        }

        /* Footer */
        .footer {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            margin-top: 4rem;
            padding: 3rem 2rem 2rem;
            border-top: 1px solid rgba(0, 102, 255, 0.1);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h4 {
            color: var(--primary-blue);
            font-size: 1.1rem;
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .footer-section p {
            color: var(--dark-gray);
            line-height: 1.6;
            font-size: 0.9rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            color: var(--dark-gray);
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: var(--primary-blue);
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--light-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            text-decoration: none;
            font-size: 1.2rem;
            transition: all 0.3s ease;
        }

        .social-link:hover {
            background: var(--primary-blue);
            color: white;
            transform: translateY(-3px);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 2rem;
            border-top: 1px solid rgba(0, 102, 255, 0.1);
            text-align: center;
            color: var(--dark-gray);
            font-size: 0.85rem;
        }

        .footer-stats {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            display: block;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.25rem;
        }

        .stat-label {
            font-size: 0.8rem;
            color: var(--dark-gray);
        }

        .gris {
            display: flex;
            gap: 6rem;
        }

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

            .footer-stats {
                gap: 1rem;
            }

            .gris {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
        }