diff --git a/src/config.rs b/src/config.rs
new file mode 100644
index 0000000..c443933
--- /dev/null
+++ b/src/config.rs
@@ -0,0 +1,39 @@
+//! Configuration module
+//! 
+//! Command line arguments and runtime configuration
+
+use anyhow::Result;
+use clap::Parser;
+use std::path::PathBuf;
+
+#[derive(Parser, Debug)]
+#[command(name = "momentry")]
+#[command(about = "MoMentry Playground - Unified media player with overlays")]
+pub struct Config {
+    #[arg(short = 'v', long = "video", help = "Video file path")]
+    pub video: Option<PathBuf>,
+
+    #[arg(short = 'a', long = "asr", help = "ASR JSON file path")]
+    pub asr: Option<PathBuf>,
+
+    #[arg(short = 'y', long = "yolo", help = "YOLO JSON file path")]
+    pub yolo: Option<PathBuf>,
+
+    #[arg(short = 'w', long = "width", default_value = "1280", help = "Window width")]
+    pub width: u32,
+
+    #[arg(short = 'h', long = "height", default_value = "720", help = "Window height")]
+    pub height: u32,
+
+    #[arg(long = "fullscreen", help = "Start in fullscreen mode")]
+    pub fullscreen: bool,
+
+    #[arg(long = "locale", default_value = "en", help = "UI language (en, zh-TW, etc.)")]
+    pub locale: String,
+}
+
+impl Config {
+    pub fn load() -> Result<Self> {
+        Ok(Config::parse())
+    }
+}