protected function _renderStyles()
    {
        $document = $this->getService('anahita:document');
        $html = '';

        // Generate stylesheet links
        foreach ($document->getStyleSheets() as $src => $attr) {

            $rel = 'stylesheet';

            if (strpos($src, '.less')) {
                $rel .= '/less';
            }

            $html .= '<link rel="'.$rel.'" href="'.$src.'" type="'.$attr['mime'].'"';

            if (isset($attr['media'])) {
                $html .= ' media="'.$attr['media'].'" ';
            }

            $html .= '/>';
        }

        foreach ($document->getStyle() as $type => $content) {
            $html .= '<style type="'.$type.'">'.$content.'</style>';
        }

        return $html;
    }