Iron Condor Signal (Range Detector)

//@version=5
indicator("Iron Condor Signal (Range Detector)", overlay=true)
// Inputs
lengthBB = input.int(20, "BB Length")
mult = input.float(2.0, "BB Multiplier")
adxLen = input.int(14, "ADX Length")
adxThreshold = input.float(20.0, "ADX Threshold (Low Trend)")
rsiLen = input.int(14, "RSI Length")
rsiLow = input.int(40, "RSI Lower")
rsiHigh = input.int(60, "RSI Upper")
// Bollinger Bands
basis = ta.sma(close, lengthBB)
dev = mult * ta.stdev(close, lengthBB)
upper = basis + dev
lower = basis - dev
// ADX (trend strength)
upMove = high - high[1]
downMove = low[1] - low
plusDM = (upMove > downMove and upMove > 0) ? upMove : 0
minusDM = (downMove > upMove and downMove > 0) ? downMove : 0
trur = ta.rma(ta.tr(true), adxLen)
plusDI = 100 * ta.rma(plusDM, adxLen) / trur
minusDI = 100 * ta.rma(minusDM, adxLen) / trur
dx = 100 * math.abs(plusDI - minusDI) / (plusDI + minusDI)
adx = ta.rma(dx, adxLen)
// RSI (momentum neutrality)
rsi = ta.rsi(close, rsiLen)
// Conditions
lowTrend = adx < adxThreshold
insideBands = close < upper and close > lower
neutralMomentum = rsi > rsiLow and rsi < rsiHigh
condorSignal = lowTrend and insideBands and neutralMomentum
// Plot
plot(upper, color=color.red)
plot(lower, color=color.green)
plot(basis, color=color.blue)
bgcolor(condorSignal ? color.new(color.yellow, 80) : na)
plotshape(condorSignal, title="Condor Signal", location=location.abovebar, color=color.orange, style=shape.labeldown, text="IC")
// Alerts
alertcondition(condorSignal, title="Iron Condor Signal", message="Range market detected. Consider Iron Condor.")