/* Estilos para el visor PDF optimizado */
.page-container {
    margin: 20px auto;
    max-width: 100%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    background: white;
    transition: opacity 0.3s ease;
}

.page-container.loading {
    opacity: 0.7;
}

.page-number {
    background: #f8f9fa;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    color: #495057;
    border-bottom: 1px solid #dee2e6;
}

.pdf-page {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.page-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: #f8f9fa;
    color: #6c757d;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

.loading-indicator {
    text-align: center;
    padding: 40px;
    font-size: 18px;
    color: #6c757d;
}

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

/* Responsive optimizations */
@media (max-width: 768px) {
    .page-container {
        margin: 10px auto;
    }
    
    .page-number {
        padding: 8px;
        font-size: 14px;
    }
    
    .page-placeholder {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .page-container {
        margin: 5px auto;
    }
}