"""Shared domain exceptions."""


class DomainException(Exception):
    """Base exception for all domain-related errors."""

    pass


class ValidationError(DomainException):
    """Raised when domain validation fails."""

    pass


class NotFoundError(DomainException):
    """Raised when a domain entity is not found."""

    pass


class AlreadyExistsError(DomainException):
    """Raised when trying to create an entity that already exists."""

    pass