main.js

//document.getElementById('debug').innerText = "Debug: Game initialized"

// 4 main regions
const buttons = ["button-1", "button-2", "button-3", "button-4"]
const sections = ["section-1", "section-2"]

for (let i = 0; i < buttons.length; i++) {
    const elems = document.querySelectorAll('.' + buttons[i]);
    elems.forEach(el => {
        el.addEventListener('click', function(e) {
            e.preventDefault();
            const targetIndex = i + 1;
            // if board is closed, open it and scroll to the section
            if (!isBoardVisible()) {
                openBoard();
                scrollToSection(targetIndex);
                return;
            }
            // if board is open and the section is already aligned, flash the button
            if (isSectionAligned(targetIndex)) {
                flickerPlay(e.currentTarget || el);
                return;
            }
            // otherwise scroll to the section
            scrollToSection(targetIndex);
        });
    });
}

function isSectionAligned(sectionIndex, threshold = 6) {
    const board = document.getElementById('board');
    const target = document.getElementById('section-' + sectionIndex);
    if (!board || !target) return false;
    const boardRect = board.getBoundingClientRect();
    const targetRect = target.getBoundingClientRect();
    const delta = Math.abs(targetRect.top - boardRect.top);
    return delta <= threshold;
}
function scrollToSection(sectionIndex){
    const container = document.getElementById('board');
    const target = document.getElementById('section-' + sectionIndex);
    if (!container || !target) return;

    container.scrollTo({
        top: target.offsetTop- container.offsetTop,
        behavior: 'smooth'
    });
}
function closeBoard(){
    document.getElementById('board').classList.add('boardHidden');
    const items = document.getElementById('items-container');
    const itemShop = document.getElementById('item-shop');
    // Close shop when board closes
    if (itemShop) itemShop.classList.add('itemShopHidden');
    // Clear shop focus state
    if (window.upgradeManager) {
        window.upgradeManager.shopInFocus = null;
    }
    // Show items bar when the board is closed
    if (items) items.classList.remove('itemsHidden');
}
function openBoard(){
    document.getElementById('board').classList.remove('boardHidden');
    const items = document.getElementById('items-container');
    const itemShop = document.getElementById('item-shop');
    if (itemShop) itemShop.classList.add('itemShopHidden');
    // Clear shop focus state when board becomes visible
    if (window.upgradeManager) {
        window.upgradeManager.shopInFocus = null;
    }
    // Auto-close shop after 500ms to prevent async timing issues
    setTimeout(() => {
        if (itemShop && !itemShop.classList.contains('itemShopHidden')) {
            itemShop.classList.add('itemShopHidden');
        }
        if (window.upgradeManager) {
            window.upgradeManager.shopInFocus = null;
        }
    }, 500);
    // Hide items bar when the board is open
    if (items) items.classList.add('itemsHidden');
}
function isBoardVisible(){
    return !document.getElementById('board').classList.contains('boardHidden');
}

// Play button
document.querySelectorAll('.play').forEach(el => {
    el.addEventListener('click', function(e) {
        e.preventDefault();
        if (isBoardVisible()) {
            closeBoard();
        } else {
            flickerPlay(e.currentTarget);
        }
    });
});

function flickerPlay(el, interval = 150) {
    el.classList.add('alert');
    setTimeout(() => el.classList.remove('alert'), interval);
}

// Ensure the items container and item shop match the initial board visibility on load
document.addEventListener('DOMContentLoaded', () => {
    const items = document.getElementById('items-container');
    if (!items) return;
    // Items should be visible when the board is NOT visible
    if (isBoardVisible()) {
        items.classList.add('itemsHidden');
    } else {
        items.classList.remove('itemsHidden');
    }
});