XAUUSD Reversal Indicator (EMA + SND) - Fixed

//version=5
indicator("XAUUSD Reversal Indicator (EMA + SND) - Fixed", overlay=true)

// Exponential Moving Averages
ema50 = ta.ema(close, 50)
ema100 = ta.ema(close, 100)
ema200 = ta.ema(close, 200)

// Store EMA values at confirmed candles to prevent shifting
var float storedEMA50 = na
var float storedEMA100 = na
var float storedEMA200 = na

if bar_index % 1 == 0
storedEMA50 := ema50
storedEMA100 := ema100
storedEMA200 := ema200

// Identify Supply & Demand Zones
lengthSND = 50
demandZone = ta.lowest(low, lengthSND)
supplyZone = ta.highest(high, lengthSND)

// Store SND values at confirmed candles to prevent shifting
var float storedDemand = na
var float storedSupply = na

if bar_index % 1 == 0
storedDemand := demandZone
storedSupply := supplyZone

// Draw Supply & Demand Zones as Bands (Fixed)
plot(storedDemand, title="Demand Zone", color=color.green, linewidth=2, style=plot.style_stepline)
plot(storedSupply, title="Supply Zone", color=color.red, linewidth=2, style=plot.style_stepline)

// Buy Entry: Price Pulls Back to EMA 50 & Demand Zone
buyEntry = ta.crossover(close, storedEMA50) and close > storedDemand and storedEMA50 > storedEMA100 and storedEMA50 > storedEMA200

// Sell Entry: Price Pulls Back to EMA 50 & Supply Zone
sellEntry = ta.crossunder(close, storedEMA50) and close < storedSupply and storedEMA50 < storedEMA100 and storedEMA50 < storedEMA200

// Buy/Sell Entry Arrows
plotshape(series=buyEntry, location=location.belowbar, color=color.green, style=shape.labelup, title="Buy Entry")
plotshape(series=sellEntry, location=location.abovebar, color=color.red, style=shape.labeldown, title="Sell Entry")

// Alerts
alertcondition(buyEntry, title="Buy Entry Signal", message="Buy Entry Detected at Demand Zone")
alertcondition(sellEntry, title="Sell Entry Signal", message="Sell Entry Detected at Supply Zone")

// Background Highlighting (Fixed)
bgcolor(buyEntry ? color.new(color.green, 80) : sellEntry ? color.new(color.red, 80) : na)

// Plot EMAs (Fixed)
plot(storedEMA50, title="EMA 50", color=color.blue, linewidth=2)
plot(storedEMA100, title="EMA 100", color=color.purple, linewidth=2)
plot(storedEMA200, title="EMA 200", color=color.orange, linewidth=2)