Quantum Trend Signal

// This Pine Script® code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © ExpertTraderASK

//@version=6
indicator("Quantum Trend Signal", overlay=true)

// ===== Inputs =====
fastEMA = input.int(21, "Fast EMA")
slowEMA = input.int(55, "Slow EMA")
rsiLen = input.int(14, "RSI Length")
atrLen = input.int(14, "ATR Length")
atrFilter = input.float(0.8, "ATR Filter")

// ===== Calculations =====
emaFast = ta.ema(close, fastEMA)
emaSlow = ta.ema(close, slowEMA)
rsi = ta.rsi(close, rsiLen)
atr = ta.atr(atrLen)
atrAvg = ta.sma(atr, 20)

// Trend
upTrend = emaFast > emaSlow
downTrend = emaFast < emaSlow

// Momentum
bullMomentum = rsi > 55
bearMomentum = rsi < 45

// Volatility
volatilityOK = atr > atrAvg * atrFilter

// Signals
buy = ta.crossover(emaFast, emaSlow) and bullMomentum and volatilityOK
sell = ta.crossunder(emaFast, emaSlow) and bearMomentum and volatilityOK

// ===== Plots =====
plot(emaFast, color=color.aqua, linewidth=2, title="Fast EMA")
plot(emaSlow, color=color.orange, linewidth=2, title="Slow EMA")

plotshape(buy, title="BUY", location=location.belowbar,
     style=shape.triangleup, color=color.lime, size=size.small, text="BUY")

plotshape(sell, title="SELL", location=location.abovebar,
     style=shape.triangledown, color=color.red, size=size.small, text="SELL")

bgcolor(upTrend ? color.new(color.green, 92) : downTrend ? color.new(color.red, 92) : na)

// Alerts
alertcondition(buy, title="Buy Alert", message="Quantum Trend BUY")
alertcondition(sell, title="Sell Alert", message="Quantum Trend SELL")