:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #10b981;
    --secondary-dark: #059669;
    --danger: #ef4444;
    --warning: #f59e0b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-800);
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.header {
    padding: 2rem 2rem 1rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.back-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.back-link:hover {
    color: white;
    transform: translateX(-3px);
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--gray-100);
    padding: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.tab-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    color: var(--gray-600);
}

.tab-btn:hover {
    background: white;
    color: var(--gray-800);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Tab Content */
.tab-content {
    padding: 2rem;
    min-height: 600px;
}

.tab-content.hidden {
    display: none;
}

/* Capture Section */
.capture-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.camera-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.camera-container {
    position: relative;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    border: 2px dashed var(--gray-300);
}

#cameraVideo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.capture-guide {
    text-align: center;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.7);
}

.guide-corners {
    width: 200px;
    height: 150px;
    border: 3px solid rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    margin: 0 auto 1rem;
    position: relative;
}

.guide-corners::before,
.guide-corners::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid var(--secondary);
}

.guide-corners::before {
    top: -3px;
    left: -3px;
    border-right: none;
    border-bottom: none;
}

.guide-corners::after {
    bottom: -3px;
    right: -3px;
    border-left: none;
    border-top: none;
}

.guide-text {
    font-size: 0.9rem;
    font-weight: 500;
}

.camera-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.control-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.start-camera {
    background: var(--secondary);
    color: white;
}

.start-camera:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.capture {
    background: var(--primary);
    color: white;
    animation: pulse 2s infinite;
}

.capture:hover {
    background: var(--primary-dark);
}

.stop-camera {
    background: var(--danger);
    color: white;
}

.stop-camera:hover {
    background: #dc2626;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.file-upload-section {
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 2px dashed var(--gray-300);
}

.upload-text {
    margin-bottom: 1rem;
    color: var(--gray-600);
    font-weight: 500;
}

.file-upload-container {
    position: relative;
}

.file-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.file-upload-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.file-upload-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Preview Section */
.preview-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.images-preview {
    background: var(--gray-50);
    border-radius: var(--border-radius);
    min-height: 200px;
    padding: 1rem;
    border: 2px solid var(--gray-200);
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 150px;
    color: var(--gray-500);
    text-align: center;
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    opacity: 0.6;
}

.preview-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.preview-image {
    position: relative;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    background: white;
    box-shadow: var(--shadow-sm);
}

.preview-image img {
    width: 100%;
    height: auto;
    display: block;
}

.image-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ocr-section h3 {
    color: var(--gray-800);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.ocr-container {
    position: relative;
}

#ocrText {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: vertical;
    background: white;
}

.ocr-progress {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

.progress-bar {
    width: 200px;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

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

.progress-text {
    color: var(--gray-700);
    font-weight: 500;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    padding: 1rem 0;
    border-top: 1px solid var(--gray-200);
    margin-top: 2rem;
}

.action-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

.ocr-btn:hover:not(:disabled) {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.pdf-btn {
    background: var(--primary);
    color: white;
}

.pdf-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.clear-btn {
    background: var(--gray-500);
    color: white;
}

.clear-btn:hover {
    background: var(--gray-600);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Documents Tab */
.documents-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.documents-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

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

.stat-label {
    font-size: 0.8rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.empty-documents {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--gray-500);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.document-item {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.document-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.document-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.document-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
}

.document-date {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.document-preview {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.document-text {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    color: var(--gray-700);
    max-height: 100px;
    overflow-y: auto;
}

.document-actions {
    display: flex;
    gap: 0.5rem;
}

.doc-action-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.doc-action-btn:hover {
    background: var(--gray-50);
}

/* Settings Tab */
.settings-section {
    max-width: 600px;
    margin: 0 auto;
}

.settings-section h2 {
    margin-bottom: 2rem;
    color: var(--gray-900);
}

.setting-group {
    background: var(--gray-50);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.setting-group h3 {
    color: var(--gray-800);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
}

.setting-item:not(:last-child) {
    border-bottom: 1px solid var(--gray-200);
}

.setting-item label {
    font-weight: 500;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.setting-item select {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background: white;
}

.setting-item input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* Storage Usage Styles */
.storage-usage {
    margin-bottom: 1rem;
}

.storage-bar {
    width: 100%;
    height: 12px;
    background: var(--gray-200);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.storage-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary), var(--warning));
    border-radius: 6px;
    transition: all 0.3s ease;
}

.storage-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.storage-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.storage-btn:hover {
    background: var(--gray-50);
    transform: translateY(-1px);
}

.storage-btn.warning {
    border-color: var(--danger);
    color: var(--danger);
}

.storage-btn.warning:hover {
    background: var(--danger);
    color: white;
}

@media (max-width: 768px) {
    .storage-actions {
        flex-direction: column;
    }
    
    .storage-btn {
        width: 100%;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        margin: 0;
    }
    
    .header {
        padding: 1.5rem 1rem 1rem 1rem;
    }
    
    .title {
        font-size: 1.5rem;
    }
    
    .tab-content {
        padding: 1rem;
    }
    
    .capture-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .camera-controls {
        flex-direction: column;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .control-btn, .action-btn {
        width: 100%;
    }
}
/* Documents Content Layout */
.documents-content {
    display: flex;
    gap: 20px;
    height: calc(100vh - 300px);
}

.documents-list {
    flex: 1;
    min-width: 300px;
}

.ocr-panel {
    flex: 1;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 20px;
    max-height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

/* Mobile-specific Documents layout */
@media (max-width: 768px) {
    .documents-content {
        flex-direction: column;
        height: auto;
        gap: 15px;
    }
    
    .documents-list {
        min-width: auto;
    }
    
    .ocr-panel {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1000;
        border-radius: 0;
        padding: 15px;
        max-height: none;
        height: 100vh;
        background: white;
    }
    
    .ocr-panel[style*="display: none"] {
        display: none !important;
    }
    
    .close-ocr-panel {
        font-size: 28px;
        width: 35px;
        height: 35px;
    }
    
    #documentsOcrText {
        min-height: 200px;
        font-size: 16px;
    }
    
    .ocr-actions {
        flex-direction: column;
        gap: 15px;
    }
    
    .ocr-action-btn {
        width: 100%;
        padding: 15px;
        font-size: 16px;
    }
    
    /* Mobile document items */
    .document-item {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .document-header {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    
    .document-title {
        font-size: 16px;
    }
    
    .document-date {
        font-size: 14px;
    }
    
    .document-actions {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .doc-action-btn {
        flex: 1;
        min-width: calc(50% - 4px);
        padding: 12px 8px;
        font-size: 14px;
        text-align: center;
    }
    
    .document-text {
        font-size: 14px;
        max-height: 80px;
        padding: 12px;
    }
}

.ocr-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray-200);
}

.ocr-header h3 {
    margin: 0;
    color: var(--primary);
    font-size: 1.2rem;
}

.close-ocr-panel {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
}

.close-ocr-panel:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.ocr-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

#documentsOcrText {
    flex: 1;
    resize: none;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    padding: 12px;
    font-family: monospace;
    font-size: 14px;
    margin-bottom: 15px;
    min-height: 300px;
    line-height: 1.5;
}

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

.ocr-action-btn {
    padding: 10px 16px;
    border: 1px solid var(--primary);
    background: white;
    color: var(--primary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.ocr-action-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
}
EOF < /dev/null