feat: update song selection, score UI, and song creator features

- SongSelectManager/SongDetailPanel: 곡 선택 및 상세 패널 개선
- SongCreatorManager: 곡 생성 기능 추가
- FinalScoreLabel/ScoreManager: 결과 화면 점수 UI 업데이트
- MarqueeText: 마퀴 텍스트 컴포넌트 개선
- NoteData/SongController: 노트 데이터 및 컨트롤러 보완

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Assets/Script/SongCreatorManager.cs

@@ -50,14 +50,27 @@ public class SongCreatorManager : MonoBehaviour
     [SerializeField] private BeatSageUploader beatSageUploader;
     [SerializeField] private NasPublisher     nasPublisher;
 
+    private static readonly Color NeonBg       = new Color(0.05f, 0.82f, 0.95f, 0.42f);
+    private static readonly Color DarkButtonBg = new Color(0.09f, 0.22f, 0.27f, 0.66f);
+    private static readonly Color DisabledBg   = new Color(0.06f, 0.12f, 0.15f, 0.48f);
+    private static readonly Color ButtonText   = new Color(0.92f, 1.0f, 1.0f, 1.0f);
+    private static readonly Color MutedText    = new Color(0.66f, 0.80f, 0.84f, 0.76f);
+    private static readonly Color NeonOutline  = new Color(0.25f, 0.96f, 1.0f, 0.42f);
+
     private static string InputPath =>
         Path.Combine(Application.persistentDataPath, "input");
 
     private readonly List<string> audioFiles = new();
     private string _pendingFilePath;
 
+    private void OnValidate()
+    {
+        ApplyButtonStyles();
+    }
+
     private void Start()
     {
+        ApplyButtonStyles();
         Directory.CreateDirectory(InputPath);
 
         if (inputPathHint != null)
@@ -258,6 +271,7 @@ public class SongCreatorManager : MonoBehaviour
         if (refreshBtn         != null) refreshBtn.interactable         = value;
         if (filePickerBtn      != null) filePickerBtn.interactable      = value;
         if (urlDownloadBtn     != null) urlDownloadBtn.interactable     = value;
+        ApplyButtonStyles();
     }
 
     private void OnFilePickerClicked()
@@ -323,6 +337,7 @@ public class SongCreatorManager : MonoBehaviour
     {
         SetAddStatus("Downloading...");
         if (urlDownloadBtn != null) urlDownloadBtn.interactable = false;
+        ApplyButtonStyles();
 
         string fileName;
         try
@@ -341,6 +356,7 @@ public class SongCreatorManager : MonoBehaviour
         yield return req.SendWebRequest();
 
         if (urlDownloadBtn != null) urlDownloadBtn.interactable = true;
+        ApplyButtonStyles();
 
         if (req.result == UnityWebRequest.Result.Success)
         {
@@ -358,4 +374,51 @@ public class SongCreatorManager : MonoBehaviour
     }
 
     private void SetAddStatus(string msg) { if (addStatusText != null) addStatusText.text = msg; }
+
+    private void ApplyButtonStyles()
+    {
+        ApplyCreatorButtonStyle(generateButton, true);
+        ApplyCreatorButtonStyle(urlDownloadBtn, true);
+        ApplyCreatorButtonStyle(refreshBtn, false);
+        ApplyCreatorButtonStyle(filePickerBtn, false);
+        ApplyCreatorButtonStyle(backButton, false);
+    }
+
+    private static void ApplyCreatorButtonStyle(Button btn, bool primary)
+    {
+        if (btn == null)
+            return;
+
+        Color bg = btn.interactable ? (primary ? NeonBg : DarkButtonBg) : DisabledBg;
+        if (btn.targetGraphic is Image img)
+        {
+            img.color = bg;
+            img.raycastTarget = true;
+        }
+
+        var colors = btn.colors;
+        colors.normalColor = bg;
+        colors.highlightedColor = btn.interactable
+            ? new Color(0.10f, 0.95f, 1.0f, primary ? 0.58f : 0.48f)
+            : DisabledBg;
+        colors.pressedColor = btn.interactable
+            ? new Color(0.02f, 0.58f, 0.72f, 0.80f)
+            : DisabledBg;
+        colors.selectedColor = colors.highlightedColor;
+        colors.disabledColor = DisabledBg;
+        colors.fadeDuration = 0.08f;
+        btn.colors = colors;
+
+        TMP_Text label = btn.GetComponentInChildren<TMP_Text>(true);
+        if (label != null)
+        {
+            label.color = btn.interactable ? ButtonText : MutedText;
+            label.raycastTarget = false;
+        }
+
+        Outline outline = btn.GetComponent<Outline>() ?? btn.gameObject.AddComponent<Outline>();
+        outline.enabled = btn.interactable;
+        outline.effectColor = NeonOutline;
+        outline.effectDistance = new Vector2(0.0f, -0.28f);
+    }
 }