:root {
    <?php foreach ($_['vars'] as $key => $value): ?>
        <?php if ($key === 'opener'): ?>
            --side-menu-<?php echo $key ?>: url('<?php print_unescaped(image_path('side_menu', $value.'.svg')); ?>');
        <?php else: ?>
            --side-menu-<?php echo $key ?>: <?php echo $value ?>;
        <?php endif; ?>
    <?php endforeach; ?>
}

<?php if ($_['display-logo'] === false): ?>
.side-menu-logo {
    display: none;
}

.side-menu-header {
    height: 50px;
}

.side-menu-apps-list {
    height: calc(100vh - 60px);
    top: 60px;
}

#side-menu.hide-opener .side-menu-header {
    display: none;
}

#side-menu.hide-opener .side-menu-apps-list {
    height: calc(100vh);
    top: 0;
}
<?php endif; ?>