Liquidity Sweep Strategy [Enhanced]

//version=5
indicator("Liquidity Sweep Strategy [Enhanced]", overlay=true)

// === USER SETTINGS ===
structureLookback = input.int(20, "Structure Lookback")
sweepSensitivity = input.int(2, "Sweep Sensitivity (Wicks Above/Below)")
showBreaks = input.bool(true, "Highlight Breaks of Structure")
showSweeps = input.bool(true, "Highlight Liquidity Sweeps")
showEntrySignals = input.bool(true, "Show Entry Signals After Sweeps")
emaLength = input.int(50, "EMA Trend Filter Length")
atrLength = input.int(14, "ATR Length")
atrMultiplier = input.float(1.2, "Minimum ATR for Valid Entry")

// === INDICATORS ===
ema = ta.ema(close, emaLength)
atr = ta.atr(atrLength)

// === HIGH/LOW STRUCTURE ===
var float lastHigh = na
var float lastLow = na

swingHigh = ta.highest(high, structureLookback) == high
swingLow = ta.lowest(low, structureLookback) == low

if swingHigh
lastHigh := high
if swingLow
lastLow := low

// === BREAK OF STRUCTURE ===
bosUp = showBreaks and swingHigh and close > lastHigh
bosDown = showBreaks and swingLow and close < lastLow

plotshape(bosUp, title="Break of Structure (Up)", location=location.belowbar, color=color.green, style=shape.triangleup, size=size.small)
plotshape(bosDown, title="Break of Structure (Down)", location=location.abovebar, color=color.red, style=shape.triangledown, size=size.small)

// === LIQUIDITY SWEEP DETECTION ===
sweepHigh = high > lastHigh and close < lastHigh and showSweeps
sweepLow = low < lastLow and close > lastLow and showSweeps

plotshape(sweepHigh, title="Liquidity Sweep High", location=location.abovebar, color=color.orange, style=shape.xcross, size=size.small)
plotshape(sweepLow, title="Liquidity Sweep Low", location=location.belowbar, color=color.orange, style=shape.xcross, size=size.small)

// === ENTRY SIGNALS WITH CONFIRMATION ===
validShort = sweepHigh and close < open and close < ema and atr > atrMultiplier * ta.sma(close, atrLength)
validLong = sweepLow and close > open and close > ema and atr > atrMultiplier * ta.sma(close, atrLength)

entryShort = validShort and showEntrySignals
entryLong = validLong and showEntrySignals

plotshape(entryShort, title="Entry Short", location=location.abovebar, color=color.red, style=shape.arrowdown, size=size.normal)
plotshape(entryLong, title="Entry Long", location=location.belowbar, color=color.green, style=shape.arrowup, size=size.normal)

// === ALERT CONDITIONS ===
alertcondition(entryShort, title="Short Entry Alert", message="Liquidity Sweep Short Entry with EMA + ATR Confirmation")
alertcondition(entryLong, title="Long Entry Alert", message="Liquidity Sweep Long Entry with EMA + ATR Confirmation")

// === BACKGROUND COLOR ON CONFIRMATION ===
bgcolor(bosUp or bosDown ? color.new(color.gray, 85) : na)