(function () {
    const opis = document.getElementById('opis');
    const opisCount = document.getElementById('opisCount');
    if (opis && opisCount) {
        const updateCount = () => opisCount.textContent = opis.value.length.toString();
        opis.addEventListener('input', updateCount);
        updateCount();
    }

    const iban = document.getElementById('numer_konta');
    if (iban) {
        iban.addEventListener('input', () => {
            const digits = iban.value.replace(/\D/g, '').slice(0, 26);
            const chunked = digits.replace(/(.{4})/g, '$1 ').trim();
            iban.value = chunked;
        });
    }

    const tel = document.getElementById('numer_telefonu_blik');
    if (tel) {
        tel.addEventListener('input', () => {
            const digits = tel.value.replace(/\D/g, '').slice(0, 9);
            const parts = [];
            if (digits.length > 0) parts.push(digits.substring(0, 3));
            if (digits.length > 3) parts.push(digits.substring(3, 6));
            if (digits.length > 6) parts.push(digits.substring(6, 9));
            tel.value = parts.join(' ');
        });
    }

    const cel = document.getElementById('cel');
    if (cel) {
        cel.addEventListener('change', () => {
            if (cel.value && Number(cel.value) < 0.01) cel.value = '0.01';
        });
    }
})();