/**
 * Theme system for the Mastra Code TUI.
 * Simplified from pi-mono's theme system.
 */
import type { MarkdownTheme, EditorTheme, SettingsListTheme, SelectListTheme } from '@mariozechner/pi-tui';
export type ThemeMode = 'dark' | 'light';
export declare function getThemeMode(): ThemeMode;
export declare const mastraBrand: {
    readonly purple: "#7f45e0";
    readonly green: "#16c858";
    readonly orange: "#fdac53";
    readonly pink: "#ff69cc";
    readonly blue: "#2563eb";
    readonly red: "#DC5663";
    readonly yellow: "#e7e67b";
};
export declare const extendedColors: {
    readonly teal: "#14b8a6";
    readonly cyan: "#06b6d4";
    readonly lightCyan: "#22d3ee";
    readonly skyBlue: "#38bdf8";
    readonly indigo: "#6366f1";
    readonly violet: "#a855f7";
    readonly lavender: "#c084fc";
    readonly fuchsia: "#d946ef";
    readonly rose: "#f472b6";
    readonly coral: "#fb7185";
    readonly amber: "#fb923c";
    readonly lime: "#a3e635";
    readonly gold: "#facc15";
    readonly stone: "#a8a29e";
    readonly warmGray: "#78716c";
    readonly copper: "#b45309";
};
export declare const greens: {
    readonly emerald: "#4ade80";
    readonly seafoam: "#34d399";
    readonly jade: "#10b981";
    readonly springGreen: "#00ff7f";
    readonly neonGreen: "#50fa7b";
    readonly chartreuse: "#84cc16";
    readonly lightLime: "#bef264";
    readonly electricLime: "#caff33";
    readonly aquamarine: "#2dd4bf";
    readonly mint: "#5eead4";
    readonly pastelMint: "#6ee7b7";
    readonly forest: "#16a34a";
    readonly deepForest: "#15803d";
    readonly sage: "#059669";
    readonly pine: "#047857";
    readonly evergreen: "#065f46";
    readonly neonLime: "#39ff14";
    readonly pureGreen: "#00ff00";
    readonly hacker: "#00ff41";
    readonly lawnGreen: "#66ff00";
};
interface MastraSurface {
    bg: string;
    antiGrid: string;
    elevationSm: string;
    elevationLg: string;
    hover: string;
    white: string;
    specialGray: string;
    mainGray: string;
    darkGray: string;
    borderAntiGrid: string;
    borderElevation: string;
}
type MastraPalette = typeof mastraBrand & MastraSurface;
export declare const TUI_MIN_CONTRAST = 5.5;
/** Terminal width buffer applied at the framework level to prevent wrapping in nested terminals */
export declare const TERM_WIDTH_BUFFER = 3;
/** Get the effective terminal width (matching the framework's reduced width) */
export declare const getTermWidth: () => number;
/** Left indent (in spaces) applied to assistant text (Markdown body) */
export declare const CHAT_INDENT = 2;
/** Precomputed indent string for assistant text */
export declare const CHAT_INDENT_STR: string;
/** Left indent (in spaces) applied to user messages and tool call boxes */
export declare const BOX_INDENT = 0;
/** Precomputed indent string for boxes */
export declare const BOX_INDENT_STR = "";
/** Mastra palette — brand + text surface colors are contrast-adapted, other surface colors adapt to theme mode. */
export declare const mastra: MastraPalette;
/** Tint a hex color by a brightness factor (0–1). e.g. tintHex("#ff8800", 0.15) → near-black orange */
export declare function tintHex(hex: string, factor: number): string;
export type ThemeColor = 'accent' | 'border' | 'borderAccent' | 'borderMuted' | 'success' | 'error' | 'warning' | 'muted' | 'dim' | 'text' | 'thinkingText' | 'userMessageText' | 'toolTitle' | 'toolArgs' | 'toolOutput' | 'textHighlight' | 'toolBorderPending' | 'toolBorderSuccess' | 'toolBorderError' | 'function' | 'path' | 'number';
export type ThemeBg = 'selectedBg' | 'userMessageBg' | 'systemReminderBg' | 'toolPendingBg' | 'toolSuccessBg' | 'toolErrorBg' | 'overlayBg' | 'errorBg';
export interface ThemeColors {
    accent: string;
    border: string;
    borderAccent: string;
    borderMuted: string;
    success: string;
    error: string;
    warning: string;
    muted: string;
    dim: string;
    text: string;
    thinkingText: string;
    userMessageBg: string;
    userMessageText: string;
    systemReminderBg: string;
    toolPendingBg: string;
    toolSuccessBg: string;
    toolErrorBg: string;
    toolBorderPending: string;
    toolBorderSuccess: string;
    toolBorderError: string;
    toolTitle: string;
    toolArgs: string;
    toolOutput: string;
    textHighlight: string;
    selectedBg: string;
    overlayBg: string;
    errorBg: string;
    path: string;
    number: string;
    function: string;
}
export declare const darkTheme: ThemeColors;
export declare const lightTheme: ThemeColors;
/**
 * Get the current theme colors.
 */
declare function getTheme(): ThemeColors;
/**
 * Set the current theme.
 */
declare function setTheme(colors: ThemeColors): void;
/**
 * Apply a theme mode, updating both the surface palette and the theme colors.
 */
export declare function applyThemeMode(mode: ThemeMode, terminalBgHex?: string): void;
/**
 * Restore terminal foreground to default. Call on exit to undo OSC 10 changes.
 */
export declare function restoreTerminalForeground(): void;
/**
 * Apply foreground color from theme.
 */
declare function fg(color: ThemeColor, text: string): string;
/**
 * Apply background color from theme.
 */
declare function bg(color: ThemeBg, text: string): string;
/**
 * Apply bold styling.
 */
declare function bold(text: string): string;
/**
 * Apply italic styling.
 */
declare function italic(text: string): string;
/**
 * Apply dim styling.
 */
declare function dim(text: string): string;
/** WCAG relative luminance of a hex color. Returns 0 (black) to 1 (white). */
export declare function luminance(hex: string): number;
/** WCAG contrast ratio between two hex colors. Returns 1 (identical) to 21 (black/white). */
export declare function contrastRatio(hex1: string, hex2: string): number;
/**
 * Adjust a foreground color to ensure sufficient contrast against a background.
 * Adjusts lightness in HSL space to preserve hue and saturation.
 * Returns the original color if it already has sufficient contrast.
 */
export declare function ensureContrast(fgHex: string, bgHex: string, minRatio?: number): string;
/**
 * Returns "#ffffff" or "#000000" depending on which has better contrast
 * against the given hex background color (WCAG relative luminance).
 */
export declare function getContrastText(hexBg: string): string;
/**
 * Keep deliberately subdued glyph colors on black/nearly-black backgrounds,
 * but contrast-adapt them on brighter terminal backgrounds.
 */
export declare function ensureContrastUnlessNearBlack(fgHex: string, minRatio?: number): string;
/**
 * Terminal glyphs need a little extra visibility even on black backgrounds.
 * Keep them subdued on near-black terminals, but do not let them get too faint.
 */
export declare function ensureTerminalGlyphContrast(fgHex: string, minRatio?: number): string;
export declare const theme: {
    fg: typeof fg;
    bg: typeof bg;
    bold: typeof bold;
    italic: typeof italic;
    dim: typeof dim;
    getTheme: typeof getTheme;
    setTheme: typeof setTheme;
};
export declare function getMarkdownTheme(): MarkdownTheme;
export declare function getEditorTheme(): EditorTheme;
export declare function getSettingsListTheme(): SettingsListTheme;
export declare function getSelectListTheme(): SelectListTheme;
export {};
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