/* Advanced Document Viewer Styles */

.adv-doc-viewer-container {
    position: relative;
    width: 100%;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.adv-doc-viewer-container:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.adv-doc-viewer-container[data-theme="dark"] {
    background: #1a1a1a;
    border-color: #333;
    color: #fff;
}

/* Loading State */
.adv-doc-viewer-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 300px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.adv-doc-viewer-loading p {
    margin: 0;
    font-size: 16px;
    font-weight: 500;
}

/* Error State */
.adv-doc-viewer-error {
    padding: 40px 20px;
    text-align: center;
    background: #fee2e2;
    color: #dc2626;
    border-radius: 8px;
    margin: 20px;
}

.adv-doc-viewer-error p {
    margin: 0;
    font-size: 16px;
    font-weight: 500;
}

/* Toolbar */
.adv-doc-viewer-toolbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.adv-doc-viewer-container[data-theme="dark"] .adv-doc-viewer-toolbar {
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
}

.toolbar-left,
.toolbar-center,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-center {
    flex: 1;
    justify-content: center;
}

/* Toolbar Buttons */
.adv-doc-viewer-toolbar button {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.adv-doc-viewer-toolbar button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.adv-doc-viewer-toolbar button:active {
    transform: translateY(0);
}

.adv-doc-viewer-toolbar button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Page Info */
.page-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 500;
}

.current-page {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    width: 60px;
    text-align: center;
    font-size: 14px;
}

.current-page:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.zoom-level {
    color: white;
    font-weight: 500;
    min-width: 50px;
    text-align: center;
    font-size: 14px;
}

/* Document Content */
.adv-doc-viewer-content {
    position: relative;
    overflow: auto;
    background: #fff;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
    min-height: 400px;
}

.adv-doc-viewer-container[data-theme="dark"] .adv-doc-viewer-content {
    background: #2d3748;
}

.pdf-canvas {
    max-width: 100%;
    height: auto;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.pdf-canvas:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Fullscreen Mode */
.adv-doc-viewer-fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    border-radius: 0 !important;
    margin: 0 !important;
}

.adv-doc-viewer-fullscreen .adv-doc-viewer-content {
    height: calc(100vh - 60px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .adv-doc-viewer-toolbar {
        padding: 10px 16px;
        flex-direction: column;
        gap: 12px;
    }
    
    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        width: 100%;
        justify-content: center;
    }
    
    .toolbar-center {
        order: -1;
    }
    
    .adv-doc-viewer-toolbar button {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .current-page {
        width: 50px;
        padding: 4px 8px;
        font-size: 13px;
    }
    
    .adv-doc-viewer-content {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .adv-doc-viewer-toolbar {
        padding: 8px 12px;
    }
    
    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        gap: 6px;
    }
    
    .adv-doc-viewer-toolbar button {
        padding: 6px 8px;
        font-size: 12px;
    }
    
    .current-page {
        width: 45px;
        padding: 4px 6px;
        font-size: 12px;
    }
    
    .adv-doc-viewer-content {
        padding: 12px;
    }
    
    .adv-doc-viewer-loading {
        padding: 40px 16px;
        min-height: 250px;
    }
    
    .loading-spinner {
        width: 32px;
        height: 32px;
        border-width: 3px;
    }
    
    .adv-doc-viewer-loading p {
        font-size: 14px;
    }
}

/* Animation for smooth transitions */
.adv-doc-viewer-container * {
    transition: all 0.3s ease;
}

/* Custom scrollbar for webkit browsers */
.adv-doc-viewer-content::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.adv-doc-viewer-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.adv-doc-viewer-content::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.adv-doc-viewer-content::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Print styles */
@media print {
    .adv-doc-viewer-toolbar {
        display: none !important;
    }
    
    .adv-doc-viewer-container {
        border: none !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    
    .adv-doc-viewer-content {
        padding: 0 !important;
        overflow: visible !important;
    }
}

/* Accessibility improvements */
.adv-doc-viewer-toolbar button:focus {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

.current-page:focus {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .adv-doc-viewer-container {
        border-width: 2px;
    }
    
    .adv-doc-viewer-toolbar button {
        border-width: 2px;
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .adv-doc-viewer-container,
    .adv-doc-viewer-container *,
    .loading-spinner {
        animation: none !important;
        transition: none !important;
    }
}