Organic Chemistry Ms Chouhan High Quality -

// toggle hint mechanism (inline) function attachHintListeners() document.querySelectorAll('.btn-hint').forEach(btn => // remove existing listener to avoid duplicates (simple approach) const newBtn = btn.cloneNode(true); btn.parentNode.replaceChild(newBtn, btn); newBtn.addEventListener('click', (e) => !hintDiv.style.display) hintDiv.style.display = 'block'; newBtn.textContent = 'Hide mechanism'; else hintDiv.style.display = 'none'; newBtn.textContent = '🧪 Show mechanism hint'; ); );

/* problem grid */ .problems-grid display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 1.5rem; organic chemistry ms chouhan

.no-results text-align: center; grid-column: 1 / -1; padding: 3rem; background: #f9fbfd; border-radius: 48px; color: #5f7f8c; !hintDiv.style.display) hintDiv.style.display = 'block'

.hero p color: #2c5a6e; font-weight: 500; margin-top: 0.5rem; newBtn.textContent = 'Hide mechanism'

.ref font-size: 0.7rem; color: #6f8f9c; margin-top: 0.6rem; text-align: right; border-top: 1px dashed #e2edf2; padding-top: 0.6rem;

function filterProblems() return problemsDB.filter(prob => // chapter filter if (currentFilters.chapter !== 'all' && prob.chapter !== currentFilters.chapter) return false; // difficulty filter if (currentFilters.difficulty !== 'all' && prob.difficulty !== currentFilters.difficulty) return false; // search filter (case insensitive) if (currentFilters.search.trim() !== '') const searchTerm = currentFilters.search.toLowerCase(); const textMatch = prob.text.toLowerCase().includes(searchTerm); const hintMatch = prob.hint.toLowerCase().includes(searchTerm); const chapMatch = prob.chapterName.toLowerCase().includes(searchTerm); if (!textMatch && !hintMatch && !chapMatch) return false; return true; );