diff --git a/shellgenius/config.py b/shellgenius/config.py
index 55a48b6..c05f9ba 100644
--- a/shellgenius/config.py
+++ b/shellgenius/config.py
@@ -1,142 +1,42 @@
-"""Configuration loader for ShellGenius."""
+"""Configuration management for ShellGenius."""
 
 import os
 from pathlib import Path
-from typing import Any, Dict, Optional
+from typing import Any
 
 import yaml
 
-
-class Config:
-    """Configuration management for ShellGenius."""
-
-    def __init__(self, config_path: Optional[str] = None):
-        """Initialize configuration.
-
-        Args:
-            config_path: Path to config.yaml file
-        """
-        self.config_path = config_path or os.environ.get(
-            "SHELLGENIUS_CONFIG", "config.yaml"
-        )
-        self.config: Dict[str, Any] = self._load_config()
-
-    def _load_config(self) -> Dict[str, Any]:
-        """Load configuration from YAML file.
-
-        Returns:
-            Dictionary containing configuration
-        """
-        default_config = {
-            "ollama": {
-                "host": "localhost:11434",
-                "model": "codellama",
-                "timeout": 120,
-            },
-            "safety": {
-                "level": "moderate",
-                "warn_on_destructive": True,
-                "allow_dangerous": False,
-                "blocked_patterns": [
-                    "rm -rf /",
-                    ":(){:|:&};:",
-                    "chmod 777",
-                    "sudo su",
-                    "dd if=/dev/zero",
-                ],
-            },
-            "ui": {
-                "theme": "default",
-                "show_syntax_highlighting": True,
-                "auto_suggest": True,
-                "max_history": 100,
-            },
-            "shell": {
-                "default": "bash",
-                "prefer_shebang": True,
-            },
-            "history": {
-                "enabled": True,
-                "storage_path": "~/.config/shellgenius/history.yaml",
-                "similarity_threshold": 0.7,
-            },
-        }
-
-        if self.config_path and Path(self.config_path).exists():
-            try:
-                with open(self.config_path, "r") as f:
-                    user_config = yaml.safe_load(f) or {}
-                return self._merge_configs(default_config, user_config)
-            except Exception:
-                return default_config
-        return default_config
-
-    def _merge_configs(
-        self, default: Dict[str, Any], user: Dict[str, Any]
-    ) -> Dict[str, Any]:
-        """Merge user config with defaults.
-
-        Args:
-            default: Default configuration
-            user: User-provided configuration
-
-        Returns:
-            Merged configuration
-        """
-        result = default.copy()
-        for key, value in user.items():
-            if key in result and isinstance(result[key], dict) and isinstance(value, dict):
-                result[key] = self._merge_configs(result[key], value)
-            else:
-                result[key] = value
-        return result
-
-    def get(self, key: str, default: Any = None) -> Any:
-        """Get configuration value by key.
-
-        Args:
-            key: Dot-separated key path (e.g., "ollama.host")
-            default: Default value if key not found
-
-        Returns:
-            Configuration value
-        """
-        keys = key.split(".")
-        value = self.config
-        for k in keys:
-            if isinstance(value, dict) and k in value:
-                value = value[k]
-            else:
-                return default
-        return value
-
-    @property
-    def ollama_host(self) -> str:
-        """Get Ollama host."""
-        return os.environ.get("OLLAMA_HOST", self.get("ollama.host", "localhost:11434"))
-
-    @property
-    def ollama_model(self) -> str:
-        """Get Ollama model."""
-        return os.environ.get("OLLAMA_MODEL", self.get("ollama.model", "codellama"))
-
-    @property
-    def safety_level(self) -> str:
-        """Get safety level."""
-        return os.environ.get("SHELLGENIUS_SAFETY", self.get("safety.level", "moderate"))
-
-    def reload(self) -> None:
-        """Reload configuration from file."""
-        self.config = self._load_config()
+CONFIG_DIR = Path(os.environ.get("XDG_CONFIG_HOME", Path.home() / ".config")) / "shellgenius"
+CONFIG_FILE = CONFIG_DIR / "config.yaml"
 
 
-def get_config(config_path: Optional[str] = None) -> Config:
-    """Get configuration instance.
+def get_config(config_path: str | None = None) -> dict[str, Any]:
+    """Load configuration from file or return defaults."""
+    if config_path is None:
+        config_path = str(CONFIG_FILE)
 
-    Args:
-        config_path: Optional path to config file
+    defaults = {
+        "ollama_host": "http://localhost:11434",
+        "ollama_model": "llama3",
+        "default_shell": "bash",
+    }
 
-    Returns:
-        Config instance
-    """
-    return Config(config_path)
+    try:
+        with open(config_path) as f:
+            config = yaml.safe_load(f) or {}
+    except FileNotFoundError:
+        config = {}
+
+    merged = defaults.copy()
+    merged.update(config)
+    return merged
+
+
+def save_config(config: dict[str, Any], config_path: str | None = None) -> None:
+    """Save configuration to file."""
+    if config_path is None:
+        config_path = str(CONFIG_FILE)
+
+    Path(config_path).parent.mkdir(parents=True, exist_ok=True)
+    with open(config_path, "w") as f:
+        yaml.dump(config, f)