1 files changed, 32 insertions, 3 deletions
diff --git a/internal/game/casino_commands.go b/internal/game/casino_commands.go
index f4ca79f..b6deb21 100644
--- a/internal/game/casino_commands.go
+++ b/internal/game/casino_commands.go
@@ -1,6 +1,7 @@
 package game
 
 import (
+	"regexp"
 	"strings"
 	"unicode/utf8"
 
@@ -8,6 +9,34 @@ import (
 	"thehouseoficarus/internal/net"
 )
 
+// casinoCommandVariable matches a command variable: an uppercase run such as
+// N in "bet N on BET" or MAX in "bet [1-4|MAX]". Literal command text is
+// lowercase, so every uppercase run is a placeholder the player replaces.
+var casinoCommandVariable = regexp.MustCompile(`[A-Z]+`)
+
+// colorizeCommand paints literal command text in the command color and each
+// uppercase variable in the distinct variable color. Mode "none" collapses to
+// plain text, and text without variables gets a single color wrapper.
+func (g *Game) colorizeCommand(sess *net.Session, text string) string {
+	matches := casinoCommandVariable.FindAllStringIndex(text, -1)
+	if len(matches) == 0 {
+		return g.colorize(sess, "command", text)
+	}
+	var sb strings.Builder
+	last := 0
+	for _, m := range matches {
+		if m[0] > last {
+			sb.WriteString(g.colorize(sess, "command", text[last:m[0]]))
+		}
+		sb.WriteString(g.colorize(sess, "command_variable", text[m[0]:m[1]]))
+		last = m[1]
+	}
+	if last < len(text) {
+		sb.WriteString(g.colorize(sess, "command", text[last:]))
+	}
+	return sb.String()
+}
+
 // Wrap before Session.WriteLine: generic prose wrapping strips alignment from
 // overlong lines. Every casino menu uses the same two-space command indent and
 // hanging description column, capped at 80 even when prose wrapping is off.
@@ -35,7 +64,7 @@ func (g *Game) casinoCommandColumns(sess *net.Session, commands []casino.MenuCom
 		n := utf8.RuneCountInString(c.Command)
 		if n > limit/2 {
 			for _, line := range casinoWrapWords(c.Command, max(1, limit-2)) {
-				lines = append(lines, "  "+g.colorize(sess, "command", line))
+				lines = append(lines, "  "+g.colorizeCommand(sess, line))
 			}
 			for _, line := range casinoWrapWords(c.Desc, max(1, limit-4)) {
 				lines = append(lines, "    "+line)
@@ -43,13 +72,13 @@ func (g *Game) casinoCommandColumns(sess *net.Session, commands []casino.MenuCom
 			continue
 		}
 		if strings.TrimSpace(c.Desc) == "" {
-			lines = append(lines, "  "+g.colorize(sess, "command", c.Command))
+			lines = append(lines, "  "+g.colorizeCommand(sess, c.Command))
 			continue
 		}
 		indent := width + 4
 		desc := casinoWrapWords(c.Desc, max(1, limit-indent))
 		cmd := c.Command + strings.Repeat(" ", width-n)
-		lines = append(lines, "  "+g.colorize(sess, "command", cmd)+"  "+desc[0])
+		lines = append(lines, "  "+g.colorizeCommand(sess, cmd)+"  "+desc[0])
 		for _, line := range desc[1:] {
 			lines = append(lines, strings.Repeat(" ", indent)+line)
 		}