/* Responsive Design Styles */

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .main-content {
        padding: 50px;
    }
    
    .header h1 {
        font-size: 3rem;
    }
}

/* Desktop (992px to 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 100%;
        padding: 15px;
    }
}

/* Tablet (768px to 991px) */
@media (max-width: 991px) {
    .container {
        padding: 10px;
    }
    
    .main-content {
        padding: 30px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .upload-area {
        padding: 30px;
    }
    
    .output-config {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .form-input {
        min-width: auto;
    }
    
    .preview-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
}

/* Mobile Large (576px to 767px) */
@media (max-width: 767px) {
    .container {
        padding: 5px;
    }
    
    .main-content {
        padding: 20px;
        border-radius: 15px;
    }
    
    .header {
        margin-bottom: 30px;
    }
    
    .header h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .header p {
        font-size: 0.95rem;
    }
    
    .upload-section,
    .output-section,
    .convert-section,
    .results-section {
        margin-bottom: 25px;
    }
    
    .upload-section h3,
    .output-section h3,
    .results-section h3 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .upload-area {
        padding: 20px;
        border-width: 2px;
    }
    
    .upload-content h3 {
        font-size: 1.2rem;
    }
    
    .upload-content p {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.95rem;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 1rem;
    }
    
    .form-input {
        padding: 10px 14px;
        font-size: 0.95rem;
    }
    
    .output-config {
        padding: 15px;
    }
    
    .output-config label {
        min-width: auto;
        font-size: 0.9rem;
    }
    
    .file-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 12px 15px;
    }
    
    .file-details {
        width: 100%;
    }
    
    .status-area,
    .preview-area {
        padding: 15px;
    }
    
    .status-content h3,
    .preview-content h3 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .status-messages {
        max-height: 150px;
    }
    
    .status-message {
        font-size: 0.9rem;
        padding: 6px 0;
    }
    
    .preview-table {
        font-size: 0.85rem;
    }
    
    .preview-table th,
    .preview-table td {
        padding: 8px 12px;
    }
    
    .conversion-stats {
        font-size: 0.85rem;
        padding: 6px 10px;
    }
    
    .footer {
        margin-top: 30px;
        font-size: 0.85rem;
    }
}

/* Mobile Small (up to 575px) */
@media (max-width: 575px) {
    .container {
        padding: 0;
    }
    
    .main-content {
        padding: 15px;
        border-radius: 0;
        margin: 10px;
    }
    
    .header {
        margin-bottom: 20px;
    }
    
    .header h1 {
        font-size: 1.6rem;
    }
    
    .header p {
        font-size: 0.9rem;
    }
    
    .upload-area {
        padding: 15px;
        border-width: 1px;
    }
    
    .upload-content {
        gap: 10px;
    }
    
    .upload-icon {
        width: 36px;
        height: 36px;
    }
    
    .upload-content h3 {
        font-size: 1.1rem;
    }
    
    .upload-content p {
        font-size: 0.85rem;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 12px 24px;
        font-size: 0.95rem;
        max-width: 250px;
    }
    
    .form-input {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    .output-config {
        padding: 12px;
    }
    
    .output-config label {
        font-size: 0.85rem;
    }
    
    .file-info {
        padding: 10px 12px;
    }
    
    .file-name {
        font-size: 0.9rem;
    }
    
    .file-size {
        font-size: 0.8rem;
    }
    
    .status-area,
    .preview-area {
        padding: 12px;
    }
    
    .status-content h3,
    .preview-content h3 {
        font-size: 1rem;
        margin-bottom: 10px;
    }
    
    .status-messages {
        max-height: 120px;
    }
    
    .status-message {
        font-size: 0.85rem;
        padding: 5px 0;
    }
    
    .preview-table {
        font-size: 0.8rem;
    }
    
    .preview-table th,
    .preview-table td {
        padding: 6px 8px;
    }
    
    .preview-table th {
        font-size: 0.75rem;
        letter-spacing: 0.3px;
    }
    
    .conversion-stats {
        font-size: 0.8rem;
        padding: 5px 8px;
    }
    
    .footer {
        margin-top: 20px;
        font-size: 0.8rem;
    }
}

/* Extra Small Mobile (up to 375px) */
@media (max-width: 375px) {
    .main-content {
        padding: 10px;
        margin: 5px;
    }
    
    .header h1 {
        font-size: 1.4rem;
    }
    
    .header p {
        font-size: 0.85rem;
    }
    
    .upload-area {
        padding: 12px;
    }
    
    .upload-content h3 {
        font-size: 1rem;
    }
    
    .upload-content p {
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .btn-large {
        padding: 10px 20px;
        font-size: 0.9rem;
        max-width: 200px;
    }
    
    .form-input {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
    
    .preview-table {
        font-size: 0.75rem;
    }
    
    .preview-table th,
    .preview-table td {
        padding: 4px 6px;
    }
}

/* Landscape Mobile */
@media (max-width: 767px) and (orientation: landscape) {
    .header {
        margin-bottom: 20px;
    }
    
    .header h1 {
        font-size: 1.6rem;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .upload-area {
        padding: 15px;
    }
    
    .status-messages {
        max-height: 100px;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .upload-icon,
    .spinner {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .upload-area:hover,
    .btn:hover,
    .card:hover {
        transform: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .main-content {
        background: #1a202c;
        color: #e2e8f0;
    }
    
    .form-input {
        background: #2d3748;
        border-color: #4a5568;
        color: #e2e8f0;
    }
    
    .form-input:focus {
        border-color: #667eea;
        background: #2d3748;
    }
    
    .output-config {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
        border-color: #4a5568;
    }
    
    .status-area,
    .preview-area {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
        border-color: #4a5568;
    }
    
    .preview-table {
        background: #1a202c;
    }
    
    .preview-table tr:hover {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    }
    
    .preview-table td {
        border-color: #4a5568;
    }
    
    .status-message {
        border-color: #4a5568;
    }
    
    .upload-section h3 {
        color: #667eea;
    }
    
    .output-section h3,
    .results-section h3 {
        color: #e2e8f0;
    }
    
    .upload-content h3 {
        color: #667eea;
    }
    
    .upload-content p {
        color: #a0aec0;
    }
    
    .file-name {
        color: #667eea;
    }
    
    .file-size {
        color: #667eea;
    }
    
    .conversion-stats {
        color: #a0aec0;
    }
}