/* PDF Viewer Styles */
.fpv-wrapper {
    max-width: 100%;
    margin: 20px auto;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    background: #fff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.fpv-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px;
    background: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
    border-radius: 8px 8px 0 0;
}

.fpv-btn {
    padding: 8px 16px;
    border: 1px solid #dee2e6;
    background: #fff;
    color: #495057;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.fpv-btn:hover {
    background: #e9ecef;
    border-color: #adb5bd;
    text-decoration: none;
    color: #495057;
}

.fpv-btn:active {
    background: #dee2e6;
    transform: translateY(1px);
}

.fpv-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.fpv-page-info {
    font-weight: 500;
    color: #495057;
    font-size: 14px;
    white-space: nowrap;
}

.fpv-canvas-container {
    position: relative;
    overflow: auto;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.pdf-canvas {
    display: block;
    max-width: 100%;
    height: auto;
    margin: auto;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    background: white;
}

.fpv-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    font-size: 16px;
    color: #495057;
    z-index: 10;
    text-align: center;
}

.fpv-loader::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

.fpv-error {
    color: #dc3545;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 15px;
    border-radius: 4px;
    margin: 20px 0;
    text-align: center;
}

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

/* Responsive design */
@media (max-width: 768px) {
    .fpv-toolbar {
        flex-direction: column;
        gap: 8px;
        padding: 10px;
    }
    
    .fpv-toolbar > * {
        flex: 1;
        min-width: auto;
    }
    
    .fpv-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .fpv-canvas-container {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .fpv-wrapper {
        margin: 10px auto;
        border-radius: 4px;
    }
    
    .fpv-toolbar {
        padding: 8px;
        gap: 6px;
    }
    
    .fpv-btn {
        padding: 5px 10px;
        font-size: 12px;
    }
    
    .fpv-page-info {
        font-size: 13px;
    }
    
    .fpv-canvas-container {
        min-height: 250px;
    }
}

/* Print styles */
@media print {
    .fpv-toolbar {
        display: none;
    }
    
    .fpv-wrapper {
        border: none;
        box-shadow: none;
        margin: 0;
    }
    
    .fpv-canvas-container {
        overflow: visible;
        height: auto !important;
    }
}