document.addEventListener("DOMContentLoaded", function() {
// Get accent color from CSS variable or fallback to default
var accentColor = getComputedStyle(document.documentElement).getPropertyValue('--aisista-accent-color').trim();
if (!accentColor) accentColor = "linear-gradient(90deg, #b9f6ca 0%, #a5d6a7 100%)";
var accentTextColor = "#1b5e20";
// SVG icons
var iconClose = `<svg width="22" height="22" viewBox="0 0 24 24" fill="none">
    <path d="M18 6L6 18" stroke="white" stroke-width="2" stroke-linecap="round" />
    <path d="M6 6L18 18" stroke="white" stroke-width="2" stroke-linecap="round" />
</svg>`;
var iconMaximize = `<svg width="22" height="22" viewBox="0 0 24 24" fill="none">
    <rect x="4" y="4" width="16" height="16" rx="2" stroke="white" stroke-width="2" />
    <path d="M8 8H16V16" stroke="white" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" />
</svg>`;
// Create chat button
var chatWidget = document.createElement('div');
chatWidget.id = "chatWidget";
chatWidget.style.position = "fixed";
chatWidget.style.bottom = "20px";
chatWidget.style.right = "20px";
chatWidget.style.padding = "15px 25px";
chatWidget.style.background = accentColor;
chatWidget.style.color = accentTextColor;
chatWidget.style.borderRadius = "30px";
chatWidget.style.zIndex = "1000";
chatWidget.style.cursor = "pointer";
chatWidget.style.display = "flex";
chatWidget.style.alignItems = "center";
chatWidget.style.justifyContent = "center";
chatWidget.style.boxShadow = "0 4px 24px rgba(0,0,0,0.15)";
chatWidget.innerHTML = `<span style="margin-right:10px;display:flex;align-items:center;"></span> شروع گفتگو با پشتیبانی`;
chatWidget.onclick = showChat;
document.body.appendChild(chatWidget);
// Create chat iframe container
var chatIframe = document.createElement('div');
chatIframe.id = "chatIframe";
chatIframe.style.display = "none";
chatIframe.style.position = "fixed";
chatIframe.style.zIndex = "1001";
chatIframe.style.background = "#fff";
chatIframe.style.boxShadow = "0 8px 32px rgba(0,0,0,0.2)";
chatIframe.style.borderRadius = "18px 18px 0 0";
chatIframe.style.overflow = "hidden";
chatIframe.style.resize = "both";
chatIframe.style.transition = "all 0.3s cubic-bezier(.4,0,.2,1)";
chatIframe.style.minWidth = "280px";
chatIframe.style.minHeight = "320px";
setIframeStyle();
chatIframe.innerHTML = `
<div id="chatHeader" style="background:linear-gradient(90deg, #b9f6ca 0%, #a5d6a7 100%);color:#1b5e20;padding:10px 18px;display:flex;justify-content:space-between;align-items:center;border-radius:18px 18px 0 0;user-select:none;">
    <span style="font-weight:600;font-size:1rem;display:flex;align-items:center;">
        تماس با پشتیبانی    </span>
    <div style="display:flex;gap:8px;">
        <button id="maximizeChatBtn" title="در صفحه جدید باز کن" style="background:none;color:#1b5e20;border:none;font-size:1.25rem;font-weight:700;cursor:pointer;outline:none;padding:0;display:flex;align-items:center;">${iconMaximize}</button>
        <button id="minimizeChatBtn" title="بستن گفتگو" style="background:none;color:#1b5e20;border:none;font-size:1.25rem;font-weight:700;cursor:pointer;outline:none;padding:0;display:flex;align-items:center;">${iconClose}</button>
    </div>
</div>
<iframe id="chatIframeInner" src="https://aisista.com/c/2Bi_aad1a6f19ec3c29" style="width:100%;height:calc(100% - 44px);border:none;border-radius:0 0 18px 18px;background:#f4f6fb;"></iframe>
`;
document.body.appendChild(chatIframe);

// Animation helpers
function animateOpen() {
setIframeStyle();
chatIframe.style.display = "block";
chatWidget.style.display = "none";
if (window.innerWidth <= 600) {
    setTimeout(function() {
    chatIframe.style.transform="translateX(0)" ;
    chatIframe.style.opacity="1" ;
    }, 10);
    } else {
    chatIframe.style.opacity="0" ;
    chatIframe.style.transform="scale(0.8)" ;
    setTimeout(function() {
    chatIframe.style.transition="all 0.3s cubic-bezier(.4,0,.2,1)" ;
    chatIframe.style.opacity="1" ;
    chatIframe.style.transform="scale(1)" ;
    }, 10);
    }
    }
    function animateClose() {
    if (window.innerWidth <=600) {
    chatIframe.style.transform="translateX(100%)" ;
    chatIframe.style.opacity="0" ;
    setTimeout(function() {
    chatIframe.style.display="none" ;
    chatWidget.style.display="flex" ;
    }, 300);
    } else {
    chatIframe.style.opacity="0" ;
    chatIframe.style.transform="scale(0.8)" ;
    setTimeout(function() {
    chatIframe.style.display="none" ;
    chatWidget.style.display="flex" ;
    chatIframe.style.transform="scale(1)" ;
    }, 300);
    }
    }
    // Show chat function
    function showChat() {
    animateOpen();
    }
    // Minimize chat function
    function minimizeChat() {
    animateClose();
    }
    // Maximize chat function
    function maximizeChat() {
    window.open("https://aisista.com/c/2Bi_aad1a6f19ec3c29", "_blank" );
    }
    // Attach events
    document.getElementById('minimizeChatBtn').onclick=minimizeChat;
    document.getElementById('maximizeChatBtn').onclick=maximizeChat;
    // Responsive style update
    window.addEventListener('resize', setIframeStyle);


    function setIframeStyle() {
    // Always show chatIframe if it was open before resize
    var wasOpen = chatIframe.style.display === "block";
    if (window.innerWidth <= 600) {
        // Mobile: full-screen drawer from right
        chatIframe.style.top = "0";
        chatIframe.style.right = "0";
        chatIframe.style.bottom = "0";
        chatIframe.style.left = "auto";
        chatIframe.style.width = "100vw";
        chatIframe.style.height = (window.CSS && CSS.supports('height: 100dvh')) ? "100dvh" : "100vh";
        chatIframe.style.maxWidth = "100vw";
        chatIframe.style.maxHeight = (window.CSS && CSS.supports('height: 100dvh')) ? "100dvh" : "100vh";
        chatIframe.style.borderRadius = "0";
        chatIframe.style.transform = wasOpen ? "translateX(0)" : "translateX(100%)";
        chatIframe.style.opacity = wasOpen ? "1" : "0";
        chatIframe.style.transition = "transform 0.3s cubic-bezier(.4,0,.2,1),opacity 0.3s cubic-bezier(.4,0,.2,1)";
        chatIframe.style.resize = "none";
        // Remove border radius from header
        var header = chatIframe.querySelector("#chatHeader");
        if (header) header.style.borderRadius = "0";
        // Always update iframe height on mobile
        var inner = document.getElementById('chatIframeInner');
        if (inner) {
            var headerHeight = chatIframe.querySelector("#chatHeader").offsetHeight || 44;
            if (window.CSS && CSS.supports('height: 100dvh')) {
                inner.style.height = "calc(100dvh - " + headerHeight + "px)";
            } else {
                inner.style.height = "calc(100vh - " + headerHeight + "px)";
            }
        }
    } else {
        // Desktop: bottom right popup
        chatIframe.style.top = "auto";
        chatIframe.style.right = "18px";
        chatIframe.style.bottom = "18px";
        chatIframe.style.left = "auto";
        chatIframe.style.width = "50vw";
        chatIframe.style.height = "80vh";
        chatIframe.style.maxWidth = "600px";
        chatIframe.style.borderRadius = "18px 18px 18px 18px";
        chatIframe.style.transform = "scale(1)";
        chatIframe.style.opacity = "1";
        chatIframe.style.transition = "all 0.3s cubic-bezier(.4,0,.2,1)";
        chatIframe.style.resize = "both";
        var header = chatIframe.querySelector("#chatHeader");
        if (header) header.style.borderRadius = "18px 18px 0px 0px";
        var inner = document.getElementById('chatIframeInner');
        if (inner) {
            inner.style.height = "calc(100% - 44px)";
        }
    }
    // Restore display if chat was open before resize
    if (wasOpen) {
        chatIframe.style.display = "block";
        chatWidget.style.display = "none";
    }
}

window.addEventListener('resize', setIframeStyle);
if (window.visualViewport) {
    window.visualViewport.addEventListener('resize', setIframeStyle);
    window.visualViewport.addEventListener('scroll', setIframeStyle);
}
window.addEventListener('orientationchange', setIframeStyle);

    // Also update on orientation change
    window.addEventListener('orientationchange', setIframeStyle);

    // Hide chatWidget when chatIframe is open (especially on mobile)
    function hideWidgetIfOpen() {
    if (chatIframe.style.display==="block" ) {
    chatWidget.style.display="none" ;
    }
    }
    window.addEventListener('resize', hideWidgetIfOpen);
    });