{"version":3,"sources":["../src/ui/theme/theme.ts"],"sourcesContent":["import type { Theme } from \"../tokens/types.js\"\n\nconst STORAGE_KEY = \"cs-theme\"\nconst DATA_ATTR = \"data-theme\"\n\n/**\n * Get the current theme setting.\n * Returns `\"light\"`, `\"dark\"`, or `\"system\"` (when no `data-theme` attribute is set).\n */\nexport function getTheme(): Theme {\n if (typeof document === \"undefined\") return \"system\"\n const attr = document.documentElement.getAttribute(DATA_ATTR)\n if (attr === \"light\" || attr === \"dark\") return attr\n return \"system\"\n}\n\n/**\n * Set the theme. Applies `data-theme` attribute to `` and\n * persists the choice to `localStorage`.\n *\n * - `\"light\"` or `\"dark\"` sets the attribute explicitly.\n * - `\"system\"` removes the attribute, deferring to `prefers-color-scheme`.\n */\nexport function setTheme(theme: Theme): void {\n if (typeof document === \"undefined\") return\n\n if (theme === \"system\") {\n document.documentElement.removeAttribute(DATA_ATTR)\n } else {\n document.documentElement.setAttribute(DATA_ATTR, theme)\n }\n\n try {\n if (typeof localStorage !== \"undefined\") {\n localStorage.setItem(STORAGE_KEY, theme)\n }\n } catch {\n // localStorage may be unavailable (e.g., iframe sandboxing)\n }\n}\n\n/**\n * Initialize the theme from `localStorage` on page load.\n * Call this early (e.g., in a `