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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    padding: 10px;
    line-height: 1.6;
    position: relative;
}

/* Glassmorphism Base */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.header {
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.9) 0%, rgba(42, 82, 152, 0.9) 100%);
    backdrop-filter: blur(10px);
    color: white;
    padding: 30px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header h1 {
    font-size: 2.2em;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.main-content {
    padding: 20px;
}

/* Ad Blocker Warning */
.ad-blocker-warning {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.warning-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    border: 2px solid rgba(220, 53, 69, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.warning-icon {
    font-size: 4em;
    color: #dc3545;
    margin-bottom: 20px;
}

.warning-content h3 {
    color: #dc3545;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.warning-content p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

/* Tool Section - Priority */
.tool-section {
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.format-info-compact {
    text-align: center;
    margin-bottom: 25px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(227, 242, 253, 0.8) 0%, rgba(243, 229, 245, 0.8) 100%);
    backdrop-filter: blur(5px);
    border-radius: 12px;
    border: 1px solid rgba(33, 150, 243, 0.2);
}

.format-info-compact h3 {
    color: #1976d2;
    margin-bottom: 10px;
    font-size: 1.3em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.format-info-compact p {
    color: #666;
    font-size: 1em;
    line-height: 1.5;
}

.upload-section {
    margin-bottom: 20px;
}

.upload-area {
    border: 2px dashed rgba(102, 126, 234, 0.4);
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    background: rgba(248, 249, 255, 0.6);
    backdrop-filter: blur(5px);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: rgba(102, 126, 234, 0.8);
    background: rgba(240, 244, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.upload-area.dragover {
    border-color: rgba(102, 126, 234, 0.8);
    background: rgba(232, 240, 255, 0.9);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3em;
    color: #667eea;
    margin-bottom: 15px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.upload-text h3 {
    font-size: 1.3em;
    color: #333;
    margin-bottom: 8px;
}

.upload-text p {
    color: #666;
    font-size: 1em;
}

.file-input {
    display: none;
}

.convert-button-section {
    text-align: center;
    margin: 20px 0;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 18px 35px;
    font-size: 1.2em;
    border-radius: 15px;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, rgba(102, 126, 234, 1) 0%, rgba(118, 75, 162, 1) 100%);
}

.btn-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.9) 0%, rgba(32, 201, 151, 0.9) 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);
}

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(40, 167, 69, 0.4);
}

.btn:disabled {
    background: rgba(204, 204, 204, 0.6);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Compact Benefits */
.benefits-compact {
    margin: 25px 0;
    padding: 15px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(5px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.benefits-grid-compact {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.benefit-item-compact {
    text-align: center;
    padding: 15px 10px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.benefit-item-compact:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

.benefit-item-compact i {
    font-size: 1.8em;
    color: #667eea;
    margin-bottom: 8px;
    display: block;
}

.benefit-item-compact span {
    color: #333;
    font-weight: 600;
    font-size: 0.9em;
}

/* Detailed Info - Collapsible */
.detailed-info {
    margin: 30px 0;
}

.info-toggle {
    width: 100%;
    padding: 15px;
    background: rgba(102, 126, 234, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 10px;
    color: #667eea;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.info-toggle:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
}

.info-toggle i {
    transition: transform 0.3s ease;
}

.detailed-content {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* File List */
.file-list {
    margin: 15px 0;
    padding: 15px;
    background: rgba(248, 249, 250, 0.8);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    border-left: 4px solid #28a745;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(238, 238, 238, 0.5);
}

.file-item:last-child {
    border-bottom: none;
}

.file-icon {
    color: #28a745;
    font-size: 1.1em;
}

/* Status Messages */
.status {
    margin: 20px 0;
    padding: 15px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: none;
}

.status.success {
    background: rgba(212, 237, 218, 0.9);
    color: #155724;
    border-left: 4px solid #28a745;
}

.status.error {
    background: rgba(248, 215, 218, 0.9);
    color: #721c24;
    border-left: 4px solid #dc3545;
}

/* Results Section */
.results-section {
    margin-top: 20px;
}

.result-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 20px;
    margin: 15px 0;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(241, 243, 244, 0.8);
}

.result-title {
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.record-count {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8em;
    font-weight: 600;
    backdrop-filter: blur(5px);
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin: 15px 0;
    flex-wrap: wrap;
}

.csv-preview {
    background: rgba(248, 249, 250, 0.9);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(222, 226, 230, 0.8);
    border-radius: 8px;
    padding: 12px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 11px;
    line-height: 1.3;
    max-height: 200px;
    overflow: auto;
    white-space: pre;
    color: #495057;
}

/* Ad Container Styles */
.ad-container {
    text-align: center;
    margin: 20px 0;
    padding: 15px;
    background: rgba(248, 249, 250, 0.6);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    border: 1px solid rgba(233, 236, 239, 0.8);
}

.ad-container ins {
    display: block;
    text-align: center;
}

.ad-disclaimer {
    margin-top: 8px;
    font-size: 0.8em;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    opacity: 0.8;
}

.ad-disclaimer i {
    color: #667eea;
}

/* SEO Content Styles */
.seo-content {
    margin-bottom: 30px;
    text-align: center;
}

.seo-content h2 {
    font-size: 1.8em;
    color: #333;
    margin-bottom: 15px;
}

.seo-content p {
    font-size: 1em;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.benefit-item {
    text-align: center;
    padding: 25px 15px;
    background: rgba(248, 249, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.15);
}

.benefit-item i {
    font-size: 2.5em;
    color: #667eea;
    margin-bottom: 15px;
}

.benefit-item h3 {
    font-size: 1.2em;
    color: #333;
    margin-bottom: 8px;
}

.benefit-item p {
    color: #666;
    font-size: 0.9em;
}

/* FAQ Section */
.faq-section {
    margin: 40px 0;
    padding: 30px;
    background: rgba(248, 249, 250, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.faq-section h2 {
    color: #333;
    font-size: 1.8em;
    margin-bottom: 25px;
    text-align: center;
}

.faq-item {
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.faq-item h3 {
    color: #1e3c72;
    font-size: 1.1em;
    margin-bottom: 10px;
}

.faq-item p {
    color: #666;
    line-height: 1.5;
    font-size: 0.95em;
}

.format-info {
    background: rgba(227, 242, 253, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    margin: 25px 0;
    border: 1px solid rgba(33, 150, 243, 0.3);
}

.format-info h3 {
    color: #1976d2;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2em;
}

.format-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.column-tag {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    padding: 6px 10px;
    border-radius: 15px;
    text-align: center;
    font-size: 0.85em;
    font-weight: 500;
    color: #666;
    border: 1px solid rgba(224, 224, 224, 0.8);
}

.footer {
    background: rgba(248, 249, 250, 0.9);
    backdrop-filter: blur(10px);
    padding: 20px;
    text-align: center;
    color: #666;
    border-top: 1px solid rgba(233, 236, 239, 0.8);
}

.footer-links {
    margin-top: 12px;
}

.footer-links a {
    color: #667eea;
    text-decoration: none;
    margin: 0 10px;
    font-weight: 500;
    font-size: 0.9em;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* SEO Optimizations */
h1, h2, h3 {
    font-weight: 600;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }
    
    .container { 
        margin: 5px; 
        border-radius: 15px; 
    }
    
    .header { 
        padding: 20px 15px; 
    }
    
    .header h1 { 
        font-size: 1.8em; 
        flex-direction: column; 
        gap: 8px; 
    }
    
    .header p {
        font-size: 1em;
    }
    
    .main-content { 
        padding: 15px; 
    }
    
    .tool-section {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .format-info-compact {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .format-info-compact h3 {
        font-size: 1.1em;
    }
    
    .upload-area { 
        padding: 30px 15px; 
    }
    
    .upload-icon {
        font-size: 2.5em;
        margin-bottom: 12px;
    }
    
    .upload-text h3 {
        font-size: 1.1em;
    }
    
    .upload-text p {
        font-size: 0.9em;
    }
    
    .btn-large {
        padding: 15px 25px;
        font-size: 1.1em;
    }
    
    .benefits-grid-compact {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .benefit-item-compact {
        padding: 12px 8px;
    }
    
    .benefit-item-compact i {
        font-size: 1.5em;
        margin-bottom: 6px;
    }
    
    .benefit-item-compact span {
        font-size: 0.8em;
    }
    
    .action-buttons { 
        flex-direction: column; 
        gap: 8px;
    }
    
    .result-header { 
        flex-direction: column; 
        gap: 10px; 
        text-align: center;
    }
    
    .result-title {
        font-size: 1.1em;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .benefit-item {
        padding: 20px 12px;
    }
    
    .seo-content h2 {
        font-size: 1.5em;
    }
    
    .seo-content p {
        font-size: 0.95em;
    }
    
    .faq-section {
        padding: 20px 15px;
    }
    
    .faq-section h2 {
        font-size: 1.5em;
    }
    
    .faq-item {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .faq-item h3 {
        font-size: 1em;
    }
    
    .faq-item p {
        font-size: 0.9em;
    }
    
    .ad-container {
        margin: 15px 0;
        padding: 12px;
    }
    
    .ad-disclaimer {
        font-size: 0.75em;
    }
    
    .format-columns {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .column-tag {
        font-size: 0.8em;
        padding: 4px 8px;
    }
    
    .footer {
        padding: 15px;
    }
    
    .footer p {
        font-size: 0.9em;
    }
    
    .footer-links a {
        font-size: 0.85em;
        margin: 0 8px;
    }
    
    .warning-content {
        padding: 30px 20px;
        margin: 0 10px;
    }
    
    .warning-icon {
        font-size: 3em;
    }
    
    .warning-content h3 {
        font-size: 1.3em;
    }
    
    .csv-preview {
        font-size: 10px;
        max-height: 150px;
        padding: 10px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .header h1 {
        font-size: 1.6em;
    }
    
    .format-info-compact h3 {
        font-size: 1em;
    }
    
    .format-info-compact p {
        font-size: 0.9em;
    }
    
    .upload-icon {
        font-size: 2.2em;
    }
    
    .upload-text h3 {
        font-size: 1em;
    }
    
    .btn-large {
        padding: 12px 20px;
        font-size: 1em;
    }
    
    .benefits-grid-compact {
        grid-template-columns: 1fr 1fr;
    }
    
    .format-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Performance optimizations */
.upload-icon {
    will-change: transform;
}

.benefit-item-compact {
    will-change: transform;
}

.result-card {
    will-change: transform;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}