"""
Theme, DPI, and shared styling constants.
"""

import sys

# ── DPI awareness (call before any Tk/CTk window) ────────────────────────────
def setup_dpi():
    if sys.platform == "win32":
        try:
            import ctypes
            ctypes.windll.shcore.SetProcessDpiAwareness(2)
        except Exception:
            try:
                import ctypes
                ctypes.windll.user32.SetProcessDPIAware()
            except Exception:
                pass


def dpi_scale(widget) -> float:
    try:
        return max(1.0, widget.winfo_fpixels("1i") / 96.0)
    except Exception:
        return 1.0


# ── Color accents ─────────────────────────────────────────────────────────────
# Each feature area has its own accent color scheme: (light_mode, dark_mode)

ACCENT_BLUE = {
    "fg":    ("#3B82F6", "#2563EB"),
    "hover": ("#2563EB", "#1D4ED8"),
}

ACCENT_PURPLE = {
    "fg":       ("#EDE9FE", "#3B1F6E"),
    "text":     ("#5B21B6", "#C4B5FD"),
    "hover":    ("#DDD6FE", "#4C2889"),
    "preview":  ("#7C3AED", "#A78BFA"),
}

ACCENT_GREEN = {
    "fg":    ("#10B981", "#059669"),
    "hover": ("#059669", "#047857"),
}

ACCENT_AMBER = {
    "fg":    ("#F59E0B", "#D97706"),
    "hover": ("#D97706", "#B45309"),
}

# Neutral button style
BTN_NEUTRAL = {
    "fg_color":    ("gray80", "gray25"),
    "text_color":  ("gray10", "gray90"),
    "hover_color": ("gray70", "gray35"),
}

BTN_SIDE = {
    "fg_color":    ("gray82", "gray22"),
    "text_color":  ("gray10", "gray90"),
    "hover_color": ("gray72", "gray32"),
}