============== ---- One-Sentence Engine ----

function handleOneSentenceSubmit() {
  const input = document.getElementById('one-sentence-input');
  const engine = document.getElementById('one-sentence-engine');
  if (!input || state.oneSentenceUsed) return;
  
  const text = input.value.trim();
  if (!text) return;

  state.oneSentenceUsed = true;
  
  // Parse the sentence
  const parsed = parseOneSentence(text);
  
  // Apply parsed data to state
  Object.keys(parsed).forEach(key => {
    if (parsed[key]) {
      state.patientData[key] = parsed[key];
      state.skippedFields.add(key);
    }
  });

  // Update UI
  updateRightPanel();
  updateProgress();
  
  // Visual feedback - fade the engine
  if (engine) {
    engine.classList.add('processed');
  }

  // Determine next step intelligently
  const nextMissingField = findNextMissingField();
  
  if (nextMissingField) {
    // Skip to the missing field
    const stepIndex = STEPS.findIndex(s => s.key === nextMissingField);
    if (stepIndex !== -1) {
      state.currentStep = stepIndex - 1;
      // Show acknowledgment
      setTimeout(() => {
        appendAssistantMessage("Got it — I've filled most of this in.", null);
        setTimeout(() => {
          advanceStep();
        }, 400);
      }, 200);
      return;
    }
  }

  // If all filled or no match, show completion message
  setTimeout(() => {
    appendAssistantMessage("Got it — I've filled in everything I could find. Let me know if you'd like to add or change anything.", null);
    setTimeout(() => {
      showReviewStep();
    }, 400);
  }, 200);
}

function parseOneSentence(text) {
  const result = {
    fullName: '',
    dob: '',
    gender: '',
    phone: '',
    email: '',
    address: '',
    qualifyingCondition: '',
    notes: ''
  };

  const lower = text.toLowerCase();
  
  // Name extraction - look for capitalized words at start or common patterns
  const nameMatch = text.match(/^([A-Z][a-z]+(?:\s+[A-Z][a-z]+)+)/) || 
                    text.match(/(?:name is|patient is|called)\s+([A-Z][a-z]+(?:\s+[A-Z][a-z]+)+)/i);
  if (nameMatch) {
    result.fullName = nameMatch[1].trim();
  }

  // Date of birth - various formats
  const dobPatterns = [
    /(?:born|dob|birth|birthdate)[\s:]?\s*(\d{1,2}[\/\-\.]\d{1,2}[\/\-\.]\d{2,4})/i,
    /(\d{1,2}[\/\-\.]\d{1,2}[\/\-\.]\d{2,4})/,
    /(?:born|dob)[\s:]?\s*([A-Za-z]+\s+\d{1,2},?\s+\d{4})/i
  ];
  for (const pattern of dobPatterns) {
    const match = text.match(pattern);
    if (match) {
      result.dob = formatDOB(match[1]);
      break;
    }
  }

  // Gender
  const genderMatch = text.match(/\b(male|female|non-binary|non binary|man|woman)\b/i);
  if (genderMatch) {
    const g = genderMatch[1].toLowerCase();
    result.gender = g === 'man' ? 'Male' : g === 'woman' ? 'Female' : 
                    g === 'non binary' ? 'Non-binary' : 
                    g.charAt(0).toUpperCase() + g.slice(1);
  }

  // Phone number
  const phoneMatch = text.match(/(\(?\d{3}\)?[\s\-\.]?\d{3}[\s\-\.]?\d{4})/) ||
                    text.match(/(\d{3}[\s\-\.]\d{3}[\s\-\.]\d{4})/);
  if (phoneMatch) {
    result.phone = formatPhone(phoneMatch[1]);
  }

  // Email
  const emailMatch = text.match(/([a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,})/);
  if (emailMatch) {
    result.email = emailMatch[1];
  }

  // Address - look for number + street patterns
  const addressMatch = text.match(/(\d+\s+[A-Za-z\s]+(?:street|st|avenue|ave|road|rd|drive|dr|lane|ln|boulevard|blvd)[.,\s]+[A-Za-z\s]+(?:\d{5}(?:-\d{4})?)?)/i) ||
                      text.match(/(\d+\s+[A-Za-z\s]+,\s*[A-Za-z\s]+(?:,\s*[A-Za-z]{2})?\s*\d{5}(?:-\d{4})?)/i);
  if (addressMatch) {
    result.address = addressMatch[1].trim();
  }

  // Qualifying conditions
  const conditionKeywords = {
    'Chronic Pain': ['chronic pain', 'pain'],
    'Anxiety': ['anxiety'],
    'PTSD': ['ptsd', 'post traumatic', 'post-traumatic'],
    'Cancer': ['cancer'],
    'Arthritis': ['arthritis'],
    'Severe Nausea': ['severe nausea', 'nausea'],
    'Migraines': ['migraine', 'migraines'],
    'Insomnia': ['insomnia', 'sleep'],
    'Muscle Spasms': ['muscle spasm', 'muscle spasms', 'spasms'],
    'Seizure Disorder': ['seizure', 'epilepsy'],
    'HIV/AIDS': ['hiv', 'aids'],
    'Glaucoma': ['glaucoma'],
    'Neuropathy': ['neuropathy', 'nerve pain'],
    'Chronic Inflammation': ['inflammation', 'inflammatory']
  };
  
  const foundConditions = [];
  for (const [condition, keywords] of Object.entries(conditionKeywords)) {
    for (const keyword of keywords) {
      if (lower.includes(keyword)) {
        foundConditions.push(condition);
        break;
      }
    }
  }
  if (foundConditions.length > 0) {
    result.qualifyingCondition = foundConditions.join(', ');
  }

  // Notes - anything after common delimiters that doesn't fit above
  const noteIndicators = ['notes:', 'note:', 'additional', 'also', 'suffering from', 'has'];
  for (const indicator of noteIndicators) {
    const idx = lower.indexOf(indicator);
    if (idx !== -1) {
      const noteText = text.slice(idx + indicator.length).trim();
      if (noteText && noteText.length > 3) {
        result.notes = noteText;
        break;
      }
    }
  }

  return result;
}

function findNextMissingField() {
  // Find first step whose key is not in patientData or is empty
  for (let i = 0; i < STEPS.length; i++) {
    const step = STEPS[i];
    const val = state.patientData[step.key];
    if (!val || val === '' || val === 'Skipped' || val === 'Not provided') {
      return step.key;
    }
  }
  return null;
}

// ---- Utilities ----

function formatValue(key, value) {function startAIFlow() {
  state.currentStep = -1;
  // Wait briefly to see if user uses one-sentence input
  setTimeout(() => {
    if (!state.oneSentenceUsed && state.currentStep === -1) {
      advanceStep();
    }
  }, 600);
}function setupEventListeners() {
  sendBtn.addEventListener('click', handleSend);
  chatInput.addEventListener('keydown', (e) => {
    if (e.key === 'Enter' && !e.shiftKey) {
      e.preventDefault();
      handleSend();
    }
  });
  skipBtn.addEventListener('click', handleSkip);
  switchModeBtn.addEventListener('click', toggleMode);
  saveDraftBtn.addEventListener('click', () => showToast('Draft saved'));
  mobileRecordFab.addEventListener('click', openMobileSheet);
  sheetOverlay.addEventListener('click', closeMobileSheet);
  closeSheet.addEventListener('click', closeMobileSheet);
  manualSaveDraft.addEventListener('click', () => showToast('Draft saved'));
  manualCreatePatient.addEventListener('click', handleManualCreate);

  // One-Sentence Engine listeners
  const oneSentenceInput = document.getElementById('one-sentence-input');
  const oneSentenceSend = document.getElementById('one-sentence-send');
  if (oneSentenceInput && oneSentenceSend) {
    oneSentenceInput.addEventListener('keydown', (e) => {
      if (e.key === 'Enter') {
        e.preventDefault();
        handleOneSentenceSubmit();
      }
    });
    oneSentenceSend.addEventListener('click', handleOneSentenceSubmit);
  }const state = {
  mode: 'ai',
  currentStep: -1,
  patientData: {},
  selectedConditions: new Set(),
  isTyping: false,
  flowComplete: false,
  stepActive: false,
  oneSentenceUsed: false,
  skippedFields: new Set()
};// ============================================
// Verify MC — Add Patient — Application Logic
// ============================================

// ---- Constants ----

const CONDITIONS = [
  'Chronic Pain', 'Anxiety', 'PTSD', 'Cancer', 'Arthritis',
  'Severe Nausea', 'Migraines', 'Insomnia', 'Muscle Spasms',
  'Seizure Disorder', 'HIV/AIDS', 'Glaucoma', 'Neuropathy',
  'Chronic Inflammation', 'Other'
];

const STEPS = [
  {
    key: 'fullName',
    question: "Let's begin the patient intake. What is the patient's full name?",
    placeholder: "Type the patient's full name...",
    type: 'text',
    helper: "You can type naturally — I'll parse details from a sentence too."
  },
  {
    key: 'dob',
    question: "What is the patient's date of birth?",
    placeholder: "e.g. 03/15/1990 or March 15, 1990",
    type: 'text'
  },
  {
    key: 'gender',
    question: "What is the patient's gender?",
    type: 'chips',
    options: ['Male', 'Female', 'Non-binary', 'Prefer not to say']
  },
  {
    key: 'phone',
    question: "What's the best phone number for the patient?",
    placeholder: "Type the patient's phone number...",
    type: 'text'
  },
  {
    key: 'email',
    question: "And their email address?",
    placeholder: "Type the patient's email address...",
    type: 'text'
  },
  {
    key: 'address',
    question: "What is the patient's home address?",
    placeholder: "Street, city, state, zip...",
    type: 'text'
  },
  {
    key: 'preferredContact',
    question: "How should we prefer to contact the patient?",
    type: 'chips',
    options: ['Phone', 'Email', 'Text', 'No preference']
  },
  {
    key: 'state',
    question: "Which state is the patient located in?",
    type: 'chips',
    options: ['California', 'New York', 'Florida', 'Texas', 'Other']
  },
  {
    key: 'qualifyingCondition',
    question: "What qualifying condition(s) apply? Select all that apply.",
    type: 'conditions',
    note: 'Condition options may vary based on provider review and state guidance.'
  },
  {
    key: 'medications',
    question: "Is the patient currently taking any medications?",
    placeholder: "List current medications, or type 'None'...",
    type: 'text',
    optional: true,
    quickOptions: ['None', 'Unknown']
  },
  {
    key: 'allergies',
    question: "Does the patient have any known allergies?",
    placeholder: "List allergies, or type 'None known'...",
    type: 'text',
    optional: true,
    quickOptions: ['None known', 'Unknown']
  },
  {
    key: 'pcp',
    question: "Does the patient have a primary care physician?",
    placeholder: "PCP name, or type 'None'...",
    type: 'text',
    optional: true,
    quickOptions: ['None', 'Not provided']
  },
  {
    key: 'insurance',
    question: "What is the patient's insurance status?",
    type: 'chips',
    options: ['Insured', 'Uninsured', 'Self-pay', 'Prefer not to say']
  },
  {
    key: 'emergencyContact',
    question: "Emergency contact information?",
    placeholder: "Contact name and phone number...",
    type: 'text',
    optional: true,
    quickOptions: ['Not provided', 'Add later']
  },
  {
    key: 'visitType',
    question: "What type of visit is the patient scheduling?",
    type: 'chips',
    options: ['New Patient', 'Follow-up', 'Consultation', 'Renewal']
  },
  {
    key: 'notes',
    question: "Any additional intake notes?",
    placeholder: "Add any relevant notes...",
    type: 'text',
    optional: true,
    quickOptions: ['None', 'Add later']
  }
];

const TOTAL_FIELDS = STEPS.length;

// ---- State ----

const state = {
  mode: 'ai',
  currentStep: -1,
  patientData: {},
  selectedConditions: new Set(),
  isTyping: false,
  flowComplete: false,
  stepActive: false
};

// ---- DOM Refs ----

const chatMessages = document.getElementById('chat-messages');
const chatInput = document.getElementById('chat-input');
const sendBtn = document.getElementById('send-btn');
const skipBtn = document.getElementById('skip-btn');
const quickOptions = document.getElementById('quick-options');
const switchModeBtn = document.getElementById('switch-mode-btn');
const saveDraftBtn = document.getElementById('save-draft-btn');
const progressBar = document.getElementById('progress-bar');
const progressPct = document.getElementById('progress-pct');
const aiLayout = document.getElementById('ai-layout');
const manualLayout = document.getElementById('manual-layout');
const liveBadge = document.getElementById('live-badge');
const pageDescription = document.getElementById('page-description');
const mobileRecordFab = document.getElementById('mobile-record-fab');
const mobileRecordSheet = document.getElementById('mobile-record-sheet');
const sheetOverlay = document.getElementById('sheet-overlay');
const closeSheet = document.getElementById('close-sheet');
const mobileRecordContent = document.getElementById('mobile-record-content');
const manualSaveDraft = document.getElementById('manual-save-draft');
const manualCreatePatient = document.getElementById('manual-create-patient');

// ---- Init ----

function init() {
  lucide.createIcons();
  setupEventListeners();
  setTimeout(() => startAIFlow(), 400);
}

function startAIFlow() {
  state.currentStep = -1;
  advanceStep();
}

// ---- Event Listeners ----

function setupEventListeners() {
  sendBtn.addEventListener('click', handleSend);
  chatInput.addEventListener('keydown', (e) => {
    if (e.key === 'Enter' && !e.shiftKey) {
      e.preventDefault();
      handleSend();
    }
  });
  skipBtn.addEventListener('click', handleSkip);
  switchModeBtn.addEventListener('click', toggleMode);
  saveDraftBtn.addEventListener('click', () => showToast('Draft saved'));
  mobileRecordFab.addEventListener('click', openMobileSheet);
  sheetOverlay.addEventListener('click', closeMobileSheet);
  closeSheet.addEventListener('click', closeMobileSheet);
  manualSaveDraft.addEventListener('click', () => showToast('Draft saved'));
  manualCreatePatient.addEventListener('click', handleManualCreate);

  // Manual form field listeners
  manualLayout.querySelectorAll('.manual-input').forEach(input => {
    input.addEventListener('input', () => {
      const field = input.dataset.field;
      if (field) {
        state.patientData[field] = input.value || '';
        updateRightPanel();
        updateProgress();
      }
    });
    // Pre-fill from AI data
    const field = input.dataset.field;
    if (field && state.patientData[field]) {
      input.value = state.patientData[field];
    }
  });
}

// ---- Chat Rendering ----

function appendAssistantMessage(text, extras) {
  const wrapper = document.createElement('div');
  wrapper.className = 'chat-msg flex items-start gap-2.5';

  const avatar = document.createElement('div');
  avatar.className = 'w-7 h-7 rounded-full bg-vmc-teal/8 border border-vmc-teal/15 flex items-center justify-center flex-shrink-0 mt-0.5';
  avatar.innerHTML = '<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="#0C8F8B" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 8V4H8"/><rect width="16" height="12" x="4" y="8" rx="2"/><path d="M2 14h2"/><path d="M20 14h2"/><path d="M15 13v2"/><path d="M9 13v2"/></svg>';

  const bubble = document.createElement('div');
  bubble.className = 'assistant-bubble flex-1 min-w-0';

  const p = document.createElement('p');
  p.textContent = text;
  bubble.appendChild(p);

  if (extras) {
    extras(bubble);
  }

  wrapper.appendChild(avatar);
  wrapper.appendChild(bubble);
  chatMessages.appendChild(wrapper);
  scrollToBottom();
}

function appendUserResponse(text) {
  const wrapper = document.createElement('div');
  wrapper.className = 'chat-msg flex justify-end';
  const bubble = document.createElement('div');
  bubble.className = 'user-bubble';
  bubble.textContent = text;
  wrapper.appendChild(bubble);
  chatMessages.appendChild(wrapper);
  scrollToBottom();
}

function appendChips(options, stepKey) {
  const container = document.createElement('div');
  container.className = 'chat-msg flex flex-wrap gap-2 mt-2 ml-[38px]';

  options.forEach(opt => {
    const chip = document.createElement('button');
    chip.className = 'chip-option';
    chip.textContent = opt;
    chip.addEventListener('click', () => {
      // Mark selected visually
      container.querySelectorAll('.chip-option').forEach(c => c.classList.remove('selected'));
      chip.classList.add('selected');
      // Process answer
      processAnswer(opt);
    });
    container.appendChild(chip);
  });

  chatMessages.appendChild(container);
  scrollToBottom();
}

function appendConditionsGrid() {
  const container = document.createElement('div');
  container.className = 'chat-msg mt-2 ml-[38px]';
  container.id = 'conditions-container';

  const note = document.createElement('p');
  note.className = 'text-[12px] text-vmc-muted mb-3';
  note.textContent = 'Condition options may vary based on provider review and state guidance.';
  container.appendChild(note);

  const grid = document.createElement('div');
  grid.className = 'grid grid-cols-2 sm:grid-cols-3 gap-2 mb-3';

  CONDITIONS.forEach(cond => {
    const card = document.createElement('button');
    card.className = 'condition-card';
    card.textContent = cond;
    card.addEventListener('click', () => {
      if (state.selectedConditions.has(cond)) {
        state.selectedConditions.delete(cond);
        card.classList.remove('selected');
      } else {
        state.selectedConditions.add(cond);
        card.classList.add('selected');
      }
      updateConditionsContinue();
    });
    grid.appendChild(card);
  });

  container.appendChild(grid);

  const continueRow = document.createElement('div');
  continueRow.className = 'flex items-center gap-2';

  const continueBtn = document.createElement('button');
  continueBtn.className = 'primary-btn px-5 py-2 rounded-xl text-[13px] font-medium';
  continueBtn.textContent = 'Continue';
  continueBtn.id = 'conditions-continue';
  continueBtn.disabled = true;
  continueBtn.style.opacity = '0.5';
  continueBtn.addEventListener('click', () => {
    const selected = Array.from(state.selectedConditions);
    if (selected.length > 0) {
      processAnswer(selected.join(', '));
    } else {
      processAnswer('Not specified');
    }
  });

  const skipLink = document.createElement('button');
  skipLink.className = 'ghost-btn text-[12px] px-2 py-1 rounded';
  skipLink.textContent = 'Skip for now';
  skipLink.addEventListener('click', () => {
    processAnswer('Not specified');
  });

  continueRow.appendChild(continueBtn);
  continueRow.appendChild(skipLink);
  container.appendChild(continueRow);

  chatMessages.appendChild(container);
  scrollToBottom();
}

function updateConditionsContinue() {
  const btn = document.getElementById('conditions-continue');
  if (btn) {
    const hasSelection = state.selectedConditions.size > 0;
    btn.disabled = !hasSelection;
    btn.style.opacity = hasSelection ? '1' : '0.5';
  }
}

function appendTypingIndicator() {
  const wrapper = document.createElement('div');
  wrapper.className = 'chat-msg flex items-start gap-2.5';
  wrapper.id = 'typing-indicator';

  const avatar = document.createElement('div');
  avatar.className = 'w-7 h-7 rounded-full bg-vmc-teal/8 border border-vmc-teal/15 flex items-center justify-center flex-shrink-0 mt-0.5';
  avatar.innerHTML = '<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="#0C8F8B" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 8V4H8"/><rect width="16" height="12" x="4" y="8" rx="2"/><path d="M2 14h2"/><path d="M20 14h2"/><path d="M15 13v2"/><path d="M9 13v2"/></svg>';

  const dots = document.createElement('div');
  dots.className = 'typing-indicator';
  dots.innerHTML = '<span></span><span></span><span></span>';

  wrapper.appendChild(avatar);
  wrapper.appendChild(dots);
  chatMessages.appendChild(wrapper);
  scrollToBottom();
}

function removeTypingIndicator() {
  const indicator = document.getElementById('typing-indicator');
  if (indicator) indicator.remove();
}

function appendReviewCard() {
  const container = document.createElement('div');
  container.className = 'chat-msg mt-2 ml-[38px]';
  container.id = 'review-container';

  const card = document.createElement('div');
  card.className = 'review-card';

  // Build sections
  const sections = [
    {
      title: 'Personal Information',
      fields: [
        { key: 'fullName', label: 'Full Name' },
        { key: 'dob', label: 'Date of Birth' },
        { key: 'gender', label: 'Gender' }
      ]
    },
    {
      title: 'Contact Details',
      fields: [
        { key: 'phone', label: 'Phone' },
        { key: 'email', label: 'Email' },
        { key: 'address', label: 'Address' },
        { key: 'preferredContact', label: 'Preferred Contact' }
      ]
    },
    {
      title: 'Medical Information',
      fields: [
        { key: 'qualifyingCondition', label: 'Condition' },
        { key: 'medications', label: 'Medications' },
        { key: 'allergies', label: 'Allergies' },
        { key: 'pcp', label: 'PCP' },
        { key: 'insurance', label: 'Insurance' }
      ]
    },
    {
      title: 'Visit Details',
      fields: [
        { key: 'visitType', label: 'Visit Type' },
        { key: 'emergencyContact', label: 'Emergency Contact' },
        { key: 'notes', label: 'Notes' }
      ]
    }
  ];

  sections.forEach((sec, sIdx) => {
    const secDiv = document.createElement('div');
    secDiv.className = 'review-section';

    const secTitle = document.createElement('div');
    secTitle.className = 'review-section-title';
    secTitle.textContent = sec.title;
    secDiv.appendChild(secTitle);

    sec.fields.forEach(f => {
      const row = document.createElement('div');
      row.className = 'review-field';

      const label = document.createElement('span');
      label.className = 'review-field-label';
      label.textContent = f.label;

      const value = document.createElement('span');
      const val = state.patientData[f.key];
      value.className = 'review-field-value' + (val ? '' : ' empty');
      value.textContent = val || 'Not provided';

      row.appendChild(label);
      row.appendChild(value);
      secDiv.appendChild(row);
    });

    card.appendChild(secDiv);
  });

  container.appendChild(card);

  // Action buttons
  const actions = document.createElement('div');
  actions.className = 'flex items-center gap-3 mt-4';

  const createBtn = document.createElement('button');
  createBtn.className = 'primary-btn px-6 py-2.5 rounded-xl text-[14px] font-medium';
  createBtn.textContent = 'Create Patient';
  createBtn.addEventListener('click', handleCreatePatient);

  const draftBtn = document.createElement('button');
  draftBtn.className = 'secondary-btn px-5 py-2.5 rounded-xl text-[14px] font-medium';
  draftBtn.textContent = 'Save Draft';
  draftBtn.addEventListener('click', () => showToast('Draft saved'));

  actions.appendChild(createBtn);
  actions.appendChild(draftBtn);
  container.appendChild(actions);

  chatMessages.appendChild(container);
  scrollToBottom();
}

function appendSuccessState() {
  const container = document.createElement('div');
  container.className = 'chat-msg mt-4 flex justify-center';

  const inner = document.createElement('div');
  inner.className = 'success-state';

  const check = document.createElement('div');
  check.className = 'success-check';
  check.innerHTML = '<svg width="28" height="28" viewBox="0 0 24 24" fill="none" stroke="#0C8F8B" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>';

  const title = document.createElement('h3');
  title.className = 'text-[17px] font-semibold text-vmc-text mb-1';
  title.textContent = 'Patient created.';

  const sub = document.createElement('p');
  sub.className = 'text-[13px] text-vmc-muted';
  const name = state.patientData.fullName || 'Patient';
  sub.textContent = `${name} added to the system.`;

  const doneBtn = document.createElement('button');
  doneBtn.className = 'secondary-btn px-5 py-2 rounded-xl text-[13px] font-medium mt-5';
  doneBtn.textContent = 'Done';
  doneBtn.addEventListener('click', () => {
    showToast('Returning to patients list...');
  });

  inner.appendChild(check);
  inner.appendChild(title);
  inner.appendChild(sub);
  inner.appendChild(doneBtn);
  container.appendChild(inner);
  chatMessages.appendChild(container);
  scrollToBottom();
}

// ---- Flow Control ----

function advanceStep() {
  state.currentStep++;
  state.stepActive = true;

  if (state.currentStep >= STEPS.length) {
    // Review step
    showReviewStep();
    return;
  }

  const step = STEPS[state.currentStep];
  if (!step) return;

  // ADAPTIVE FLOW: Check if this field is already filled
  const existingValue = state.patientData[step.key];
  if (existingValue && existingValue !== '' && existingValue !== 'Skipped' && existingValue !== 'Not provided') {
    // Skip this step and move to next
    state.stepActive = false;
    advanceStep();
    return;
  }

  state.isTyping = true;
  disableComposer();

  // Show typing indicator
  appendTypingIndicator();

  const delay = state.currentStep === 0 ? 500 : 400;
  setTimeout(() => {
    removeTypingIndicator();
    state.isTyping = false;

    // Show assistant message
    appendAssistantMessage(step.question, step.helper ? ((bubble) => {
      const helper = document.createElement('div');
      helper.className = 'helper-text';
      helper.innerHTML = `<svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M12 16v-4"/><path d="M12 8h.01"/></svg> ${step.helper}`;
      bubble.appendChild(helper);
    }) : null);

    // Show interactive elements based on type
    if (step.type === 'chips') {
      appendChips(step.options, step.key);
      updateComposerForStep(step);
    } else if (step.type === 'conditions') {
      appendConditionsGrid();
      chatInput.placeholder = 'Or type a condition...';
      chatInput.disabled = false;
      sendBtn.disabled = false;
    } else {
      updateComposerForStep(step);
    }

    // Show skip for optional fields
    if (step.optional) {
      skipBtn.classList.remove('hidden');
    } else {
      skipBtn.classList.add('hidden');
    }

    // Show quick options
    renderQuickOptions(step.quickOptions);

    scrollToBottom();
  }, delay);
}

function updateComposerForStep(step) {
  if (step.placeholder) {
    chatInput.placeholder = step.placeholder;
  }
  chatInput.disabled = false;
  sendBtn.disabled = false;
  chatInput.focus();
}

function disableComposer() {
  chatInput.disabled = true;
  sendBtn.disabled = true;
  skipBtn.classList.add('hidden');
  quickOptions.innerHTML = '';
}

function renderQuickOptions(options) {
  quickOptions.innerHTML = '';
  if (!options || options.length === 0) return;

  options.forEach(opt => {
    const btn = document.createElement('button');
    btn.className = 'quick-option';
    btn.textContent = opt;
    btn.addEventListener('click', () => {
      processAnswer(opt);
    });
    quickOptions.appendChild(btn);
  });
}

function handleSend() {
  if (state.isTyping || state.flowComplete) return;
  const value = chatInput.value.trim();
  if (!value) return;

  chatInput.value = '';
  processAnswer(value);
}

function handleSkip() {
  if (state.isTyping || state.flowComplete) return;
  const step = STEPS[state.currentStep];
  if (!step) return;
  processAnswer('Skipped');
}

function processAnswer(value) {
  if (state.flowComplete) return;

  const step = STEPS[state.currentStep];
  if (!step) return;

  state.stepActive = false;

  // Clean up conditions container if present
  const condContainer = document.getElementById('conditions-container');
  if (condContainer) condContainer.remove();

  // Store data
  const formattedValue = formatValue(step.key, value);
  state.patientData[step.key] = formattedValue;

  // Show user response
  appendUserResponse(formattedValue);

  // Clear quick options
  quickOptions.innerHTML = '';

  // Disable composer briefly
  disableComposer();

  // Update right panel
  updateRightPanel();
  updateProgress();

  // Advance to next step after a short natural delay
  setTimeout(() => {
    advanceStep();
  }, 350);
}

function showReviewStep() {
  state.isTyping = true;
  disableComposer();
  appendTypingIndicator();

  setTimeout(() => {
    removeTypingIndicator();
    state.isTyping = false;

    appendAssistantMessage("Please review and confirm.", null);
    setTimeout(() => {
      appendReviewCard();
      chatInput.placeholder = 'Review above...';
      chatInput.disabled = true;
      sendBtn.disabled = true;
      skipBtn.classList.add('hidden');
    }, 180);
  }, 500);
}

function handleCreatePatient() {
  const reviewContainer = document.getElementById('review-container');
  if (reviewContainer) reviewContainer.remove();

  state.flowComplete = true;
  disableComposer();
  chatInput.placeholder = 'Patient intake complete';
  liveBadge.style.display = 'none';

  appendSuccessState();
  updateProgress();
}

function handleManualCreate() {
  // Gather all manual form data
  manualLayout.querySelectorAll('.manual-input').forEach(input => {
    const field = input.dataset.field;
    if (field) {
      state.patientData[field] = input.value || '';
    }
  });
  updateRightPanel();
  updateProgress();
  showToast('Patient created successfully');
}

// ---- Right Panel Update ----

function updateRightPanel() {
  const fieldRows = document.querySelectorAll('#record-panel .field-row, #mobile-record-content .field-row');
  fieldRows.forEach(row => {
    const key = row.dataset.field;
    if (!key) return;
    const valueEl = row.querySelector('.field-value');
    if (!valueEl) return;

    const val = state.patientData[key];
    const oldVal = valueEl.textContent;
    
    if (val && val !== 'Skipped' && val !== 'Not provided' && val !== 'Not specified') {
      valueEl.textContent = val;
      valueEl.className = 'field-value font-medium';
      // Trigger update animation if value changed
      if (oldVal !== val && oldVal !== '—') {
        valueEl.classList.add('updated');
        setTimeout(() => valueEl.classList.remove('updated'), 160);
      }
    } else if (val === 'Skipped') {
      valueEl.textContent = 'Skipped';
      valueEl.className = 'field-value skipped';
    } else if (val === 'Not provided' || val === 'Not specified') {
      valueEl.textContent = 'Not provided';
      valueEl.className = 'field-value skipped';
    } else {
      valueEl.textContent = '—';
      valueEl.className = 'field-value waiting';
    }
  });

  // Update mobile record content
  updateMobileRecordContent();
}

function updateProgress() {
  const answered = Object.keys(state.patientData).filter(k => {
    const v = state.patientData[k];
    return v && v !== '' && v !== 'Skipped' && v !== 'Not provided' && v !== 'Not specified';
  }).length;

  const pct = Math.round((answered / TOTAL_FIELDS) * 100);
  progressBar.style.width = pct + '%';
  progressPct.textContent = pct + '%';

  // Also update mobile if visible
  const mobilePct = document.getElementById('mobile-progress-pct');
  const mobileBar = document.getElementById('mobile-progress-bar');
  if (mobilePct) mobilePct.textContent = pct + '%';
  if (mobileBar) mobileBar.style.width = pct + '%';
}

// ---- Mobile Record Sheet ----

function updateMobileRecordContent() {
  if (!mobileRecordContent) return;

  const sections = [
    {
      title: 'Personal Information',
      fields: [
        { key: 'fullName', label: 'Full Name' },
        { key: 'dob', label: 'Date of Birth' },
        { key: 'gender', label: 'Gender' }
      ]
    },
    {
      title: 'Contact Details',
      fields: [
        { key: 'phone', label: 'Phone' },
        { key: 'email', label: 'Email' },
        { key: 'address', label: 'Address' },
        { key: 'preferredContact', label: 'Preferred Contact' }
      ]
    },
    {
      title: 'Medical Information',
      fields: [
        { key: 'qualifyingCondition', label: 'Condition' },
        { key: 'medications', label: 'Medications' },
        { key: 'allergies', label: 'Allergies' },
        { key: 'pcp', label: 'PCP' },
        { key: 'insurance', label: 'Insurance' }
      ]
    },
    {
      title: 'Visit Details',
      fields: [
        { key: 'visitType', label: 'Visit Type' },
        { key: 'emergencyContact', label: 'Emergency Contact' },
        { key: 'notes', label: 'Notes' }
      ]
    }
  ];

  const answered = Object.keys(state.patientData).filter(k => {
    const v = state.patientData[k];
    return v && v !== '' && v !== 'Skipped' && v !== 'Not provided' && v !== 'Not specified';
  }).length;
  const pct = Math.round((answered / TOTAL_FIELDS) * 100);

  let html = `
    <div class="flex items-center justify-between mb-3">
      <span class="text-[12px] font-medium text-vmc-muted">${pct}% complete</span>
    </div>
    <div class="w-full h-1.5 bg-gray-100 rounded-full mb-4 overflow-hidden">
      <div id="mobile-progress-bar" class="h-full bg-vmc-teal rounded-full transition-all duration-300" style="width:${pct}%"></div>
    </div>
  `;

  sections.forEach(sec => {
    html += `<div class="mb-4">
      <h3 class="text-[11px] font-medium uppercase tracking-wider text-vmc-disabled mb-2">${sec.title}</h3>
      <div class="space-y-1.5">`;
    sec.fields.forEach(f => {
      const val = state.patientData[f.key];
      let display = '—';
      let cls = 'waiting';
      if (val && val !== 'Skipped' && val !== 'Not provided' && val !== 'Not specified') {
        display = val;
        cls = '';
      } else if (val === 'Skipped' || val === 'Not provided' || val === 'Not specified') {
        display = 'Not provided';
        cls = 'skipped';
      }
      html += `<div class="field-row" data-field="${f.key}">
        <span class="field-label">${f.label}</span>
        <span class="field-value ${cls}">${display}</span>
      </div>`;
    });
    html += `</div></div>`;
  });

  mobileRecordContent.innerHTML = html;
}

function openMobileSheet() {
  updateMobileRecordContent();
  mobileRecordSheet.classList.remove('hidden');
  requestAnimationFrame(() => {
    const content = mobileRecordSheet.querySelector('.sheet-content');
    content.style.transform = 'translateY(0)';
  });
}

function closeMobileSheet() {
  const content = mobileRecordSheet.querySelector('.sheet-content');
  content.style.transform = 'translateY(100%)';
  setTimeout(() => {
    mobileRecordSheet.classList.add('hidden');
  }, 300);
}

// ---- Mode Switching ----

function toggleMode() {
  if (state.mode === 'ai') {
    switchToManual();
  } else {
    switchToAI();
  }
}

function switchToManual() {
  state.mode = 'manual';
  aiLayout.classList.add('hidden');
  manualLayout.classList.remove('hidden');
  switchModeBtn.innerHTML = '<i data-lucide="bot" class="w-3.5 h-3.5 mr-1.5"></i> Switch to AI Guided';
  pageDescription.textContent = 'Manual entry mode';
  liveBadge.style.display = 'none';
  mobileRecordFab.style.display = 'none';
  lucide.createIcons();

  // Pre-fill manual form with existing data
  manualLayout.querySelectorAll('.manual-input').forEach(input => {
    const field = input.dataset.field;
    if (field && state.patientData[field]) {
      const val = state.patientData[field];
      if (val !== 'Skipped' && val !== 'Not provided' && val !== 'Not specified') {
        input.value = val;
      }
    }
  });
}

function switchToAI() {
  state.mode = 'ai';
  manualLayout.classList.add('hidden');
  aiLayout.classList.remove('hidden');
  switchModeBtn.innerHTML = '<i data-lucide="pencil-line" class="w-3.5 h-3.5 mr-1.5"></i> Switch to Manual';
  pageDescription.textContent = 'Guided by intelligent assistant';
  if (!state.flowComplete) {
    liveBadge.style.display = '';
  }
  lucide.createIcons();
}

// ---- Utilities ----

function formatValue(key, value) {
  if (key === 'phone') {
    return formatPhone(value);
  }
  if (key === 'dob') {
    return formatDOB(value);
  }
  return value;
}

function formatPhone(val) {
  const digits = val.replace(/\D/g, '');
  if (digits.length === 10) {
    return `(${digits.slice(0,3)}) ${digits.slice(3,6)}-${digits.slice(6)}`;
  }
  if (digits.length === 11 && digits[0] === '1') {
    return `(${digits.slice(1,4)}) ${digits.slice(4,7)}-${digits.slice(7)}`;
  }
  return val;
}

function formatDOB(val) {
  // Try to parse common date formats
  const d = new Date(val);
  if (!isNaN(d.getTime())) {
    const mm = String(d.getMonth() + 1).padStart(2, '0');
    const dd = String(d.getDate()).padStart(2, '0');
    const yyyy = d.getFullYear();
    return `${mm}/${dd}/${yyyy}`;
  }
  return val;
}

function scrollToBottom() {
  requestAnimationFrame(() => {
    chatMessages.scrollTop = chatMessages.scrollHeight;
  });
}

function showToast(message) {
  const toastInner = document.getElementById('toast-inner');
  const toastText = document.getElementById('toast-text');
  toastText.textContent = message;
  toastInner.style.opacity = '1';
  toastInner.style.transform = 'translateY(0)';

  setTimeout(() => {
    toastInner.style.opacity = '0';
    toastInner.style.transform = 'translateY(8px)';
  }, 2200);
}

// ---- Start ----

document.addEventListener('DOMContentLoaded', init);