* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Courier Prime', monospace;
            line-height: 1.6;
            color: #33281E;
            background-color: #E8E2D6;
            background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAMAAAAp4XiDAAAAUVBMVEWFhYWDg4N3d3dtbW17e3t1dXWBgYGHh4d5eXlzc3OLi4ubm5uVlZWPj4+NjY19fX2JiYl/f39ra2uRkZGZmZlpaWmXl5dvb29xcXGTk5NnZ2c4zIQ+AAAAC3RSTlMBBQMEAAAAAQIAAAA3z44AAABsSURBVHja7c1BCoAwDANRY9NqrVb79L73P6cSKBTFQDZd5S2HL7xcQkREDMAk0DmsjE6TTIP+/KjHlKpqKKpkHvRlR+00C4wiUiZRM1v+wGwv9WY7zfLi5HTKEdoTAICW5cGCDAULMhIs+OUBeJQF95MhnY8AAAAASUVORK5CYII=');
            min-height: 100vh;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* Breadcrumb optimizado para SEO */
        .breadcrumb {
            margin-bottom: 20px;
            padding: 12px 0;
            font-size: 14px;
            background: rgba(255,255,255,0.3);
            border-radius: 6px;
            padding: 8px 15px;
        }
        
        .breadcrumb a {
            color: #8B5C34;
            text-decoration: none;
            font-family: 'Special Elite', cursive;
        }
        
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        
        .breadcrumb-separator {
            margin: 0 8px;
            color: #B87E45;
        }
        
        /* Header optimizado */
        .header {
            text-align: center;
            margin-bottom: 30px;
            padding: 30px 20px;
            background: #F5F1E6;
            border: 6px solid #B87E45;
            position: relative;
            box-shadow: inset 0 0 20px rgba(0,0,0,0.1);
        }
        
        .header::before,
        .header::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
            box-shadow: inset 0 0 3px rgba(0,0,0,0.3);
        }
        
        .header::before {
            top: 8px;
            left: 8px;
        }
        
        .header::after {
            top: 8px;
            right: 8px;
        }
        
        .title {
            font-family: 'Special Elite', cursive;
            font-size: 2.5em;
            color: #8B5C34;
            margin-bottom: 10px;
        }
        
        .subtitle {
            color: #33281E;
            font-size: 1.1em;
            margin-bottom: 15px;
        }
        
        .supported-formats {
            font-size: 14px;
            color: #8B5C34;
            font-style: italic;
        }
        
        /* SEO Content Section */
        .seo-intro {
            background: #F8F5F0;
            border: 3px solid #D4AF8C;
            padding: 25px;
            margin-bottom: 30px;
            border-radius: 8px;
        }
        
        .seo-intro h2 {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 15px;
            font-size: 1.3em;
        }
        
        .seo-intro p {
            margin-bottom: 12px;
            text-align: justify;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            margin: 20px 0;
        }
        
        .feature-item {
            background: #EBE5D8;
            border: 2px solid #B87E45;
            padding: 15px;
            border-radius: 6px;
            text-align: center;
        }
        
        .feature-icon {
            font-size: 2em;
            margin-bottom: 10px;
            display: block;
        }
        
        .feature-title {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 8px;
            font-size: 1em;
        }
        
        .feature-desc {
            font-size: 14px;
            color: #33281E;
        }
        
        /* Main Layout */
        .main-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 25px;
            margin-bottom: 30px;
        }
        
        /* Upload Section */
        .upload-section {
            background: #F5F1E6;
            border: 6px solid #B87E45;
            padding: 25px;
            position: relative;
        }
        
        .upload-section::before,
        .upload-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
        }
        
        .upload-section::before {
            top: 8px;
            left: 8px;
        }
        
        .upload-section::after {
            top: 8px;
            right: 8px;
        }
        
        .section-title {
            font-family: 'Special Elite', cursive;
            font-size: 1.5em;
            color: #8B5C34;
            margin-bottom: 20px;
            text-align: center;
        }
        
        /* Drag & Drop Zone */
        .drop-zone {
            border: 3px dashed #B87E45;
            border-radius: 8px;
            padding: 40px 20px;
            text-align: center;
            background: #FFFFFF;
            transition: all 0.3s;
            cursor: pointer;
            position: relative;
            margin-bottom: 20px;
        }
        
        .drop-zone:hover,
        .drop-zone.dragover {
            border-color: #8B5C34;
            background: #F8F5F0;
            transform: scale(1.02);
        }
        
        .drop-icon {
            font-size: 3em;
            color: #B87E45;
            margin-bottom: 15px;
            display: block;
        }
        
        .drop-text {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            font-size: 1.1em;
            margin-bottom: 10px;
        }
        
        .drop-subtext {
            color: #33281E;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .file-input {
            display: none;
        }
        
        .browse-button {
            background: #B87E45;
            color: #FFF8EA;
            border: 2px solid #8B5C34;
            padding: 10px 20px;
            cursor: pointer;
            font-family: 'Special Elite', cursive;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .browse-button:hover {
            background: #A06934;
            transform: translateY(-2px);
        }
        
        /* File List */
        .file-list {
            margin-top: 20px;
        }
        
        .file-item {
            background: #EBE5D8;
            border: 2px solid #B87E45;
            padding: 15px;
            margin-bottom: 10px;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .file-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .file-icon {
            font-size: 1.5em;
            color: #8B5C34;
        }
        
        .file-details {
            display: flex;
            flex-direction: column;
        }
        
        .file-name {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            font-weight: bold;
        }
        
        .file-size {
            font-size: 12px;
            color: #33281E;
        }
        
        .file-actions {
            display: flex;
            gap: 8px;
        }
        
        .remove-button {
            background: #C25B45;
            color: #FFF8EA;
            border: none;
            padding: 6px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-family: 'Special Elite', cursive;
            font-size: 12px;
            transition: all 0.3s;
        }
        
        .remove-button:hover {
            background: #B14A36;
        }
        
        /* Settings Section */
        .settings-section {
            background: #F5F1E6;
            border: 6px solid #B87E45;
            padding: 25px;
            position: relative;
        }
        
        .settings-section::before,
        .settings-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
        }
        
        .settings-section::before {
            top: 8px;
            left: 8px;
        }
        
        .settings-section::after {
            top: 8px;
            right: 8px;
        }
        
        /* Settings Groups */
        .settings-group {
            background: #EBE5D8;
            border: 2px solid #B87E45;
            padding: 20px;
            margin-bottom: 20px;
            border-radius: 6px;
        }
        
        .group-title {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 15px;
            font-size: 1.1em;
        }
        
        .setting-item {
            margin-bottom: 15px;
        }
        
        .setting-label {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 5px;
            display: block;
            font-size: 14px;
        }
        
        .setting-input,
        .setting-select {
            width: 100%;
            padding: 8px 12px;
            border: 2px solid #B87E45;
            border-radius: 4px;
            font-family: 'Courier Prime', monospace;
            background: #FFFFFF;
            color: #33281E;
        }
        
        .setting-input:focus,
        .setting-select:focus {
            outline: none;
            border-color: #8B5C34;
            box-shadow: 0 0 5px rgba(139, 92, 52, 0.3);
        }
        
        .range-container {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .range-input {
            flex: 1;
            height: 6px;
            border-radius: 3px;
            background: #D3C7B8;
            outline: none;
            appearance: none;
        }
        
        .range-input::-webkit-slider-thumb {
            appearance: none;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #8B5C34;
            cursor: pointer;
        }
        
        .range-value {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            font-weight: bold;
            min-width: 60px;
            text-align: center;
        }
        
        /* Preview Section */
        .preview-section {
            background: #F5F1E6;
            border: 6px solid #B87E45;
            padding: 25px;
            margin-bottom: 25px;
            position: relative;
            grid-column: 1 / -1;
        }
        
        .preview-section::before,
        .preview-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
        }
        
        .preview-section::before {
            top: 8px;
            left: 8px;
        }
        
        .preview-section::after {
            top: 8px;
            right: 8px;
        }
        
        .preview-controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .preview-info {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
        }
        
        .preview-buttons {
            display: flex;
            gap: 10px;
        }
        
        .preview-button {
            background: #6B9B76;
            color: #FFF8EA;
            border: 2px solid #4F7256;
            padding: 8px 15px;
            cursor: pointer;
            font-family: 'Special Elite', cursive;
            border-radius: 4px;
            transition: all 0.3s;
            font-size: 14px;
        }
        
        .preview-button:hover {
            background: #5C8A67;
            transform: translateY(-1px);
        }
        
        .preview-display {
            background: #FFFFFF;
            border: 2px solid #B87E45;
            padding: 20px;
            border-radius: 4px;
            font-family: 'Courier Prime', monospace;
            font-size: 14px;
            line-height: 1.8;
            max-height: 200px;
            overflow-y: auto;
            color: #33281E;
        }
        
        .morse-text {
            letter-spacing: 2px;
            word-break: break-all;
        }
        
        /* Processing Section */
        .processing-section {
            background: #F5F1E6;
            border: 6px solid #B87E45;
            padding: 25px;
            margin-bottom: 25px;
            position: relative;
            grid-column: 1 / -1;
            display: none;
        }
        
        .processing-section::before,
        .processing-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
        }
        
        .processing-section::before {
            top: 8px;
            left: 8px;
        }
        
        .processing-section::after {
            top: 8px;
            right: 8px;
        }
        
        .progress-container {
            margin: 20px 0;
        }
        
        .progress-label {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 10px;
            display: flex;
            justify-content: space-between;
        }
        
        .progress-bar {
            width: 100%;
            height: 20px;
            background: #EBE5D8;
            border: 2px solid #B87E45;
            border-radius: 10px;
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #6B9B76, #8BC34A);
            border-radius: 8px;
            transition: width 0.3s ease;
            width: 0%;
        }
        
        .processing-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin: 20px 0;
        }
        
        .step-item {
            background: #EBE5D8;
            border: 2px solid #B87E45;
            padding: 15px;
            border-radius: 4px;
            text-align: center;
            position: relative;
        }
        
        .step-item.active {
            background: #E8F5E8;
            border-color: #6B9B76;
        }
        
        .step-item.completed {
            background: #E8F5E8;
            border-color: #6B9B76;
        }
        
        .step-icon {
            font-size: 1.5em;
            margin-bottom: 8px;
            display: block;
        }
        
        .step-text {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            font-size: 12px;
        }
        
        /* Convert Section */
        .convert-section {
            background: #F5F1E6;
            border: 6px solid #B87E45;
            padding: 25px;
            margin-bottom: 25px;
            position: relative;
            text-align: center;
        }
        
        .convert-section::before,
        .convert-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #B87E45;
            border-radius: 50%;
        }
        
        .convert-section::before {
            top: 8px;
            left: 8px;
        }
        
        .convert-section::after {
            top: 8px;
            right: 8px;
        }
        
        .convert-button {
            background: #B87E45;
            color: #FFF8EA;
            border: 3px solid #8B5C34;
            padding: 20px 40px;
            cursor: pointer;
            font-family: 'Special Elite', cursive;
            font-size: 1.2em;
            border-radius: 8px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        
        .convert-button::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 50%;
            background: rgba(255,255,255,0.1);
        }
        
        .convert-button:hover:not(:disabled) {
            background: #A06934;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.2);
        }
        
        .convert-button:disabled {
            background: #D9CDB8;
            cursor: not-allowed;
            transform: none;
            border-color: #B3A99A;
            color: #8F8677;
        }
        
        .convert-info {
            margin-top: 15px;
            color: #8B5C34;
            font-family: 'Courier Prime', monospace;
            font-size: 14px;
        }
        
        /* Download Section */
        .download-section {
            background: #E8F5E8;
            border: 6px solid #6B9B76;
            padding: 25px;
            margin-bottom: 25px;
            position: relative;
            text-align: center;
            display: none;
        }
        
        .download-section::before,
        .download-section::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 12px;
            background: #6B9B76;
            border-radius: 50%;
        }
        
        .download-section::before {
            top: 8px;
            left: 8px;
        }
        
        .download-section::after {
            top: 8px;
            right: 8px;
        }
        
        .download-title {
            font-family: 'Special Elite', cursive;
            font-size: 1.5em;
            color: #4F7256;
            margin-bottom: 20px;
        }
        
        .download-files {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            margin-bottom: 20px;
        }
        
        .download-item {
            background: #FFFFFF;
            border: 2px solid #6B9B76;
            padding: 15px;
            border-radius: 4px;
        }
        
        .download-filename {
            font-family: 'Special Elite', cursive;
            color: #4F7256;
            margin-bottom: 8px;
        }
        
        .download-filesize {
            font-size: 12px;
            color: #33281E;
            margin-bottom: 10px;
        }
        
        .download-button {
            background: #6B9B76;
            color: #FFF8EA;
            border: 2px solid #4F7256;
            padding: 8px 15px;
            cursor: pointer;
            font-family: 'Special Elite', cursive;
            border-radius: 4px;
            transition: all 0.3s;
            width: 100%;
        }
        
        .download-button:hover {
            background: #5C8A67;
            transform: translateY(-2px);
        }
        
        /* Statistics */
        .stats-section {
            background: #F5F1E6;
            border: 4px solid #B87E45;
            padding: 20px;
            margin-bottom: 25px;
            border-radius: 6px;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
        }
        
        .stat-item {
            text-align: center;
            background: #EBE5D8;
            padding: 15px;
            border-radius: 4px;
            border: 2px solid #B87E45;
        }
        
        .stat-value {
            font-family: 'Special Elite', cursive;
            font-size: 1.5em;
            color: #8B5C34;
            display: block;
        }
        
        .stat-label {
            font-size: 12px;
            color: #33281E;
            margin-top: 5px;
        }
        
        /* Help Section */
        .help-section {
            background: #FFE5B8;
            border: 4px solid #D4AF8C;
            padding: 20px;
            margin-bottom: 25px;
            border-radius: 6px;
        }
        
        .help-title {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 15px;
        }
        
        .help-list {
            list-style: none;
            color: #33281E;
        }
        
        .help-list li {
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
        }
        
        .help-list li::before {
            content: "💡";
            position: absolute;
            left: 0;
        }
        
        /* SEO Footer Content */
        .seo-footer {
            background: #F8F5F0;
            border: 3px solid #D4AF8C;
            padding: 25px;
            margin-bottom: 30px;
            border-radius: 8px;
        }
        
        .seo-footer h3 {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 15px;
            font-size: 1.2em;
        }
        
        .seo-footer p {
            margin-bottom: 12px;
            text-align: justify;
            font-size: 14px;
        }
        
        .faq-section {
            margin-top: 20px;
        }
        
        .faq-item {
            margin-bottom: 15px;
            background: #EBE5D8;
            border: 2px solid #B87E45;
            border-radius: 6px;
            padding: 15px;
        }
        
        .faq-question {
            font-family: 'Special Elite', cursive;
            color: #8B5C34;
            margin-bottom: 8px;
            font-weight: bold;
        }
        
        .faq-answer {
            font-size: 14px;
            color: #33281E;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .title {
                font-size: 2em;
            }
            
            .main-layout {
                grid-template-columns: 1fr;
            }
            
            .preview-controls {
                flex-direction: column;
                align-items: stretch;
            }
            
            .preview-buttons {
                justify-content: center;
            }
            
            .convert-button {
                padding: 15px 30px;
                font-size: 1em;
            }
            
            .processing-steps {
                grid-template-columns: 1fr;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
        }