function eben_kontakty_load() {
    $base_id      = sanitize_text_field($_POST['base_id']);
    $table_name   = sanitize_text_field($_POST['table_name']);
    $columns      = array_map('trim', explode(',', $_POST['columns']));
    $sort_column  = sanitize_text_field($_POST['sort_column']);
    $sort_order   = strtolower($_POST['sort_order']) === 'desc' ? 'desc' : 'asc';
    $offset       = sanitize_text_field($_POST['offset']);
    $search       = sanitize_text_field($_POST['search'] ?? '');
    $team_filter  = sanitize_text_field($_POST['team_filter'] ?? '');
    $eben_status  = sanitize_text_field($_POST['eben_status'] ?? '');

    $formulaParts = [];

    if (!empty($team_filter)) {
        $formulaParts[] = "SEARCH(LOWER('" . strtolower($team_filter) . "'), LOWER({Patrí do tímov}))";
    }

    if (!empty($eben_status)) {
        $formulaParts[] = "LOWER({Eben Status}) = '" . strtolower($eben_status) . "'";
    } else {
        $formulaParts[] = "OR(LOWER({Eben Status}) = 'eben', LOWER({Eben Status}) = 'eben youth')";
    }

    if (!empty($formulaParts)) {
        $formula = '&filterByFormula=' . urlencode(count($formulaParts) > 1 ? 'AND(' . implode(',', $formulaParts) . ')' : $formulaParts[0]);
    } else {
        $formula = '';
    }

    $sort = '';
    if (!empty($sort_column)) {
        $sort = "&sort[0][field]=" . urlencode($sort_column) . "&sort[0][direction]=" . $sort_order;
    }

    $all_records = [];
    $next_offset = $offset;
    $page_size = (strlen($search) >= 2) ? 100 : 16;
    $current_offset = null;

    do {
        $url = "https://api.airtable.com/v0/{$base_id}/{$table_name}?pageSize={$page_size}{$formula}{$sort}";
        if (!empty($next_offset)) {
            $url .= "&offset=" . urlencode($next_offset);
        }

        $args = ['headers' => ['Authorization' => 'Bearer ' . AIRTABLE_API_KEY], 'timeout' => 15];
        $res = wp_remote_get($url, $args);

        if (is_wp_error($res)) wp_send_json_error($res->get_error_message());

        $data = json_decode(wp_remote_retrieve_body($res), true);
        if (!isset($data['records'])) break;

        $all_records = array_merge($all_records, $data['records']);

        // Ulož aktuálny offset pre návrat do odpovede
        $current_offset = $data['offset'] ?? null;
        $next_offset = $data['offset'] ?? null;

    } while ($next_offset && strlen($search) >= 2);

    if (empty($all_records)) wp_send_json_error('Žiadne dáta');

    $filtered_records = [];
    if (strlen($search) >= 2) {
        $search_normalized = eben_remove_diacritics(mb_strtolower($search));
        foreach ($all_records as $record) {
            $name = $record['fields']['Meno'] ?? '';
            $team = $record['fields']['Patrí do tímov'] ?? '';
            $haystack = eben_remove_diacritics(mb_strtolower($name . ' ' . (is_array($team) ? implode(' ', $team) : $team)));
            if (strpos($haystack, $search_normalized) !== false) {
                $filtered_records[] = $record;
            }
        }
    } else {
        $filtered_records = $all_records;
    }

    $html = '';
    foreach ($filtered_records as $record) {
        $html .= '<tr class="data-row">';
        foreach ($columns as $col) {
            $cls = 'column-' . sanitize_title($col);
            $val = $record['fields'][$col] ?? '';
            $img = 'https://eben-ezer.sk/wp-content/uploads/2025/03/Daco_5058560-1.png';

            if (is_array($val)) {
                if ($cls === 'column-fotka' && isset($val[0]['url'])) {
                    $img = esc_url($val[0]['url']);
                } else {
                    $val = implode(', ', array_map('esc_html', $val));
                }
            }

            if ($cls === 'column-fotka') {
                $html .= '<td class="column-fotka"><a href="' . $img . '" class="glightbox"><img src="' . $img . '" alt="Foto"></a></td>';
            } elseif (preg_match('/^\+?\d{1,3}[-.\s]?\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{3,4}$/', $val)) {
                $html .= '<td class="' . $cls . '"><a href="tel:' . esc_attr($val) . '">' . esc_html($val) . '</a></td>';
            } else {
                $val = !empty($val) ? esc_html($val) : '-';
                $html .= '<td class="' . $cls . '">' . $val . '</td>';
            }
        }
        $html .= '</tr>';
    }

    wp_send_json_success([
        'rows_html' => $html,
        'offset' => (!empty($search)) ? null : $current_offset
    ]);
}