diff --git a/sync-project.sh b/sync-project.sh
index 55b363c..c7cf7e6 100755
--- a/sync-project.sh
+++ b/sync-project.sh
@@ -24,20 +24,41 @@ NC='\033[0m' # No Color
 # Get current script real directory (follow symlinks)
 SCRIPT_PATH="$(realpath "$0")"
 SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"
+ARCHIVE_NAME="leo.tar.gz"
 
 echo -e "${BLUE}=== Project Sync Configuration ===${NC}"
 echo ""
 
-# Prompt for configuration
-read -p "Server user@host (e.g., leo@server.com): " SERVER_HOST
-read -p "Server project path (e.g., /home/leo/public_leo): " SERVER_PROJECT_PATH
-read -p "Local folder path (e.g., Delta Pharmacy): " LOCAL_FOLDER
-read -sp "SSH Password: " SSH_PASSWORD
-echo ""
-echo ""
+# Check if config is predefined (for testing usually)
+if [ -f ".sync-credentials" ]; then
+    source ".sync-credentials"
+else
+    # Prompt for configuration
+    read -p "Server user@host (e.g., leo@server.com): " SERVER_HOST
+    read -p "Server project path (e.g., /home/leo/public_leo): " SERVER_PROJECT_PATH
+    read -p "Local folder path (e.g., Delta Pharmacy): " LOCAL_FOLDER
+    read -sp "SSH Password: " SSH_PASSWORD
+    echo ""
+    echo ""
+fi
 
-ARCHIVE_NAME="leo.tar.gz"
+# Validate required variables (all except password)
+if [ -z "$SERVER_HOST" ]; then
+    echo -e "${RED}Error: SERVER_HOST is not set${NC}"
+    exit 1
+fi
 
+if [ -z "$SERVER_PROJECT_PATH" ]; then
+    echo -e "${RED}Error: SERVER_PROJECT_PATH is not set${NC}"
+    exit 1
+fi
+
+if [ -z "$LOCAL_FOLDER" ]; then
+    echo -e "${RED}Error: LOCAL_FOLDER is not set${NC}"
+    exit 1
+fi
+
+# Start sync process
 echo "Starting project sync..."
 
 # Step 1: SSH into server and create tar archive