diff --git a/internal/web_server/handlers/maintenance_handler.go b/internal/web_server/handlers/maintenance_handler.go
index a92e2da..e429128 100644
--- a/internal/web_server/handlers/maintenance_handler.go
+++ b/internal/web_server/handlers/maintenance_handler.go
@@ -16,6 +16,52 @@ type resetAndReseedReq struct {
 	Confirm string `json:"confirm"`
 }
 
+func resolveSeedDir(seedDir string) (string, error) {
+	cleanSeedDir := strings.TrimSpace(seedDir)
+	if cleanSeedDir == "" {
+		cleanSeedDir = "db/data"
+	}
+
+	// If absolute, use directly.
+	if filepath.IsAbs(cleanSeedDir) {
+		info, err := os.Stat(cleanSeedDir)
+		if err != nil {
+			return "", err
+		}
+		if !info.IsDir() {
+			return "", fmt.Errorf("seed dir is not a directory: %s", cleanSeedDir)
+		}
+		return cleanSeedDir, nil
+	}
+
+	candidates := make([]string, 0, 5)
+
+	// 1) Relative to current working directory.
+	candidates = append(candidates, filepath.Clean(cleanSeedDir))
+
+	// 2) Relative to executable directory (and parents).
+	if exePath, err := os.Executable(); err == nil {
+		exeDir := filepath.Dir(exePath)
+		candidates = append(candidates,
+			filepath.Join(exeDir, cleanSeedDir),
+			filepath.Join(exeDir, "..", cleanSeedDir),
+			filepath.Join(exeDir, "..", "..", cleanSeedDir),
+		)
+	}
+
+	for _, candidate := range candidates {
+		info, err := os.Stat(candidate)
+		if err != nil {
+			continue
+		}
+		if info.IsDir() {
+			return candidate, nil
+		}
+	}
+
+	return "", fmt.Errorf("seed directory not found (tried: %s)", strings.Join(candidates, ", "))
+}
+
 // ResetAndReseedDatabase godoc
 // @Summary Reset and reseed database
 // @Description Dangerous operation: truncates all public tables (except schema_migrations) and reseeds from db/data SQL files.
@@ -62,9 +108,12 @@ func (h *Handler) ResetAndReseedDatabase(c *fiber.Ctx) error {
 		}
 	}
 
-	seedDir := strings.TrimSpace(h.Cfg.DBSeedDir)
-	if seedDir == "" {
-		seedDir = "db/data"
+	seedDir, err := resolveSeedDir(h.Cfg.DBSeedDir)
+	if err != nil {
+		return c.Status(fiber.StatusInternalServerError).JSON(domain.ErrorResponse{
+			Message: "Failed to resolve seed directory",
+			Error:   err.Error(),
+		})
 	}
 	seedFiles, err := filepath.Glob(filepath.Join(seedDir, "*.sql"))
 	if err != nil {