refactor(Style): Add font abstraction and CSS-like styling constants

boards/esp32-s3-lcd-43/board_config.h

@@ -38,3 +38,22 @@
 // ── GT911 Touch ──
 #define GT911_ADDR 0x5D
 // #define TOUCH_INT -1
+
+// ── Style Constants (CSS-like) ────────────────────────────────────────
+// Spacing
+#define STYLE_SPACING_X 10
+#define STYLE_SPACING_Y 10
+#define STYLE_HEADER_HEIGHT 40
+#define STYLE_TILE_GAP 8
+#define STYLE_TILE_PADDING 16
+#define STYLE_TILE_RADIUS 8
+
+// Colors
+#define STYLE_COLOR_BG 0x001030 // Dark blue
+#define STYLE_COLOR_HEADER 0x1A1A // Dark gray
+#define STYLE_COLOR_FG TFT_WHITE
+#define STYLE_COLOR_ALERT TFT_RED
+#define STYLE_COLOR_TILE_1 0x0280 // Green
+#define STYLE_COLOR_TILE_2 0x0400 // Dark green
+#define STYLE_COLOR_TILE_3 0x0440 // Teal
+#define STYLE_COLOR_TILE_4 0x0100 // Dark red