/* Loader styles */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.spinner {
    border: 12px solid #f3f3f3;
    border-top: 12px solid #3498db;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    animation: spin 2s linear infinite;
}

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

.hidden {
    display: none;
}

.visible {
    display: block;
}

/* Apply shadow to all sides */
.shadow-all-sides {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05), 0 -2px 4px rgba(0, 0, 0, 0.05),
    2px 0 4px rgba(0, 0, 0, 0.05), -2px 0 4px rgba(0, 0, 0, 0.05);
    padding: 1rem;
    border-radius: 8px;
}