//@version=5
indicator("TTM Trend + SMA Crossover + 100 SMA", overlay=true)

// Trend baseline
length = input.int(20, "Trend Length")
ma     = ta.sma(close, length)

// Candle colors (TTM Trend)
trendColor = close > ma ? color.blue : close < ma ? color.red : color.gray
plotcandle(open, high, low, close,
           color=trendColor,
           wickcolor=trendColor,
           bordercolor=trendColor,
           title="TTM Trend Candles")

// SMA crossover logic
fastLen = input.int(8, "Fast SMA")
slowLen = input.int(18, "Slow SMA")

fastMA = ta.sma(close, fastLen)
slowMA = ta.sma(close, slowLen)

plot(fastMA, color=color.yellow, title="8 SMA")
plot(slowMA, color=color.purple, title="18 SMA")

// Add 100 SMA in white
sma100 = ta.sma(close, 100)
plot(sma100, color=color.white, title="100 SMA")

// Detect crossovers
bullCross = ta.crossover(fastMA, slowMA)
bearCross = ta.crossunder(fastMA, slowMA)

// Print buy/sell labels
plotshape(bullCross, title="Buy Signal", text="BUY", style=shape.labelup,
          location=location.belowbar, color=color.green, textcolor=color.white, size=size.tiny)

plotshape(bearCross, title="Sell Signal", text="SELL", style=shape.labeldown,
          location=location.abovebar, color=color.red, textcolor=color.white, size=size.tiny)