"use strict"; export async function detectSystemTheme() { try { const t = await browser.theme.getCurrent(); const scheme = t?.properties?.color_scheme; if (scheme === 'dark' || scheme === 'light') { return scheme; } const color = t?.colors?.frame || t?.colors?.toolbar; if (color && /^#/.test(color)) { const r = parseInt(color.slice(1, 3), 16); const g = parseInt(color.slice(3, 5), 16); const b = parseInt(color.slice(5, 7), 16); const lum = (0.299 * r + 0.587 * g + 0.114 * b) / 255; return lum < 0.5 ? 'dark' : 'light'; } } catch {} return 'light'; }