diff --git a/config/default.toml b/config/default.toml
index f700218..2354f61 100644
--- a/config/default.toml
+++ b/config/default.toml
@@ -1,54 +1,88 @@
 # Default CalDAV Sync Configuration
-# This file provides default values for the Zoho to Nextcloud calendar sync
-
-# Zoho Configuration (Source)
-[zoho]
-server_url = "https://caldav.zoho.com/caldav"
-username = ""
-password = ""
-selected_calendars = []
-
-# Nextcloud Configuration (Target)  
-[nextcloud]
-server_url = ""
-username = ""
-password = ""
-target_calendar = "Imported-Zoho-Events"
-create_if_missing = true
+# This file provides default values for CalDAV synchronization
 
+# Source Server Configuration (Primary CalDAV server)
 [server]
+# CalDAV server URL (example: Zoho, Google Calendar, etc.)
+url = "https://caldav.example.com/"
+# Username for authentication
+username = ""
+# Password for authentication (use app-specific password)
+password = ""
+# Whether to use HTTPS (recommended)
+use_https = true
 # Request timeout in seconds
 timeout = 30
 
+# Source Calendar Configuration
 [calendar]
-# Calendar color in hex format
+# Calendar name/path on the server
+name = "calendar"
+# Calendar display name (optional - will be discovered from server if not specified)
+display_name = ""
+# Calendar color in hex format (optional - will be discovered from server if not specified)
 color = "#3174ad"
-# Default timezone for processing
-timezone = "UTC"
+# Calendar timezone (optional - will be discovered from server if not specified)
+timezone = ""
+# Whether this calendar is enabled for synchronization
+enabled = true
 
+# Synchronization Configuration
 [sync]
 # Synchronization interval in seconds (300 = 5 minutes)
 interval = 300
 # Whether to perform synchronization on startup
 sync_on_startup = true
-# Number of weeks ahead to sync
-weeks_ahead = 1
-# Whether to run in dry-run mode (preview changes only)
-dry_run = false
-
-# Performance settings
+# Maximum number of retry attempts for failed operations
 max_retries = 3
+# Delay between retry attempts in seconds
 retry_delay = 5
+# Whether to delete local events that are missing on server
+delete_missing = false
+# Date range configuration
+[sync.date_range]
+# Number of days ahead to sync
+days_ahead = 7
+# Number of days in the past to sync
+days_back = 0
+# Whether to sync all events regardless of date
+sync_all_events = false
 
 # Optional filtering configuration
 # [filters]
-# # Event types to include (leave empty for all)
+# # Start date filter (ISO 8601 format)
+# start_date = "2024-01-01T00:00:00Z"
+# # End date filter (ISO 8601 format)
+# end_date = "2024-12-31T23:59:59Z"
+# # Event types to include
 # event_types = ["meeting", "appointment"]
-# # Keywords to filter events by
+# # Keywords to filter events by (events containing any of these will be included)
 # keywords = ["work", "meeting", "project"]
-# # Keywords to exclude
+# # Keywords to exclude (events containing any of these will be excluded)
 # exclude_keywords = ["personal", "holiday", "cancelled"]
-# # Minimum event duration in minutes
-# min_duration_minutes = 5
-# # Maximum event duration in hours
-# max_duration_hours = 24
+
+# Optional Import Configuration (for unidirectional sync to target server)
+# Uncomment and configure this section to enable import functionality
+# [import]
+# # Target server configuration
+# [import.target_server]
+# url = "https://nextcloud.example.com/remote.php/dav/"
+# username = ""
+# password = ""
+# use_https = true
+# timeout = 30
+# 
+# # Target calendar configuration
+# [import.target_calendar]
+# name = "Imported-Events"
+# display_name = "Imported from Source"
+# color = "#FF6B6B"
+# timezone = "UTC"
+# enabled = true
+# 
+# # Import behavior settings
+# overwrite_existing = true    # Source always wins
+# delete_missing = false       # Don't delete events missing from source
+# dry_run = false              # Set to true for preview mode
+# batch_size = 50              # Number of events to process in each batch
+# create_target_calendar = true # Create target calendar if it doesn't exist
diff --git a/config/example.toml b/config/example.toml
index 76613ea..5002737 100644
--- a/config/example.toml
+++ b/config/example.toml
@@ -1,117 +1,96 @@
 # CalDAV Configuration Example
-# This file demonstrates how to configure Zoho and Nextcloud CalDAV connections
+# This file demonstrates how to configure CalDAV synchronization
 # Copy and modify this example for your specific setup
 
-# Global settings
-global:
-  log_level: "info"
-  sync_interval: 300  # seconds (5 minutes)
-  conflict_resolution: "latest"  # or "manual" or "local" or "remote"
-  timezone: "UTC"
+# Source Server Configuration (e.g., Zoho Calendar)
+[server]
+# CalDAV server URL
+url = "https://calendar.zoho.com/caldav/d82063f6ef084c8887a8694e661689fc/events/"
+# Username for authentication
+username = "your-email@domain.com"
+# Password for authentication (use app-specific password)
+password = "your-app-password"
+# Whether to use HTTPS (recommended)
+use_https = true
+# Request timeout in seconds
+timeout = 30
 
-# Zoho CalDAV Configuration (Source)
-zoho:
-  enabled: true
-  
-  # Server settings
-  server:
-    url: "https://caldav.zoho.com/caldav"
-    timeout: 30  # seconds
-  
-  # Authentication
-  auth:
-    username: "your-zoho-email@domain.com"
-    password: "your-zoho-app-password"  # Use app-specific password, not main password
-  
-  # Calendar selection - which calendars to import from
-  calendars:
-    - name: "Work Calendar"
-      enabled: true
-      color: "#4285F4"
-      sync_direction: "pull"  # Only pull from Zoho
-      
-    - name: "Personal Calendar"
-      enabled: true
-      color: "#34A853"
-      sync_direction: "pull"
-      
-    - name: "Team Meetings"
-      enabled: false  # Disabled by default
-      color: "#EA4335"
-      sync_direction: "pull"
-  
-  # Sync options
-  sync:
-    sync_past_events: false  # Don't sync past events
-    sync_future_events: true
-    sync_future_days: 7  # Only sync next week
-    include_attendees: false  # Keep it simple
-    include_attachments: false
+# Source Calendar Configuration
+[calendar]
+# Calendar name/path on the server
+name = "caldav/d82063f6ef084c8887a8694e661689fc/events/"
+# Calendar display name
+display_name = "Work Calendar"
+# Calendar color in hex format
+color = "#4285F4"
+# Default timezone for the calendar
+timezone = "UTC"
+# Whether this calendar is enabled for synchronization
+enabled = true
 
-# Nextcloud CalDAV Configuration (Target)
-nextcloud:
-  enabled: true
-  
-  # Server settings
-  server:
-    url: "https://your-nextcloud-domain.com"
-    timeout: 30  # seconds
-  
-  # Authentication
-  auth:
-    username: "your-nextcloud-username"
-    password: "your-nextcloud-app-password"  # Use app-specific password
-  
-  # Calendar discovery
-  discovery:
-    principal_url: "/remote.php/dav/principals/users/{username}/"
-    calendar_home_set: "/remote.php/dav/calendars/{username}/"
-    
-  # Target calendar - all Zoho events go here
-  calendars:
-    - name: "Imported-Zoho-Events"
-      enabled: true
-      color: "#FF6B6B"
-      sync_direction: "push"  # Only push to Nextcloud
-      create_if_missing: true  # Auto-create if it doesn't exist
-  
-  # Sync options
-  sync:
-    sync_past_events: false
-    sync_future_events: true
-    sync_future_days: 7
+# Synchronization Configuration
+[sync]
+# Synchronization interval in seconds (300 = 5 minutes)
+interval = 300
+# Whether to perform synchronization on startup
+sync_on_startup = true
+# Maximum number of retry attempts for failed operations
+max_retries = 3
+# Delay between retry attempts in seconds
+retry_delay = 5
+# Whether to delete local events that are missing on server
+delete_missing = false
+# Date range configuration
+[sync.date_range]
+# Number of days ahead to sync
+days_ahead = 30
+# Number of days in the past to sync
+days_back = 30
+# Whether to sync all events regardless of date
+sync_all_events = false
 
-# Event filtering
-filters:
-  events:
-    exclude_patterns:
-      - "Cancelled:"
-      - "BLOCKED"
-    
-    # Time-based filters
-    min_duration_minutes: 5
-    max_duration_hours: 24
-    
-    # Status filters
-    include_status: ["confirmed", "tentative"]
-    exclude_status: ["cancelled"]
+# Optional filtering configuration
+[filters]
+# Keywords to filter events by (events containing any of these will be included)
+keywords = ["work", "meeting", "project"]
+# Keywords to exclude (events containing any of these will be excluded)
+exclude_keywords = ["personal", "holiday", "cancelled"]
+# Minimum event duration in minutes
+min_duration_minutes = 5
+# Maximum event duration in hours
+max_duration_hours = 24
 
-# Logging
-logging:
-  level: "info"
-  format: "text"
-  file: "caldav-sync.log"
-  max_size: "10MB"
-  max_files: 3
+# Import Configuration (for unidirectional sync to target server)
+[import]
+# Target server configuration (e.g., Nextcloud)
+[import.target_server]
+# Nextcloud CalDAV URL
+url = "https://your-nextcloud-domain.com/remote.php/dav/calendars/username/"
+# Username for Nextcloud authentication
+username = "your-nextcloud-username"
+# Password for Nextcloud authentication (use app-specific password)
+password = "your-nextcloud-app-password"
+# Whether to use HTTPS (recommended)
+use_https = true
+# Request timeout in seconds
+timeout = 30
 
-# Performance settings
-performance:
-  max_concurrent_syncs: 3
-  batch_size: 25
-  retry_attempts: 3
-  retry_delay: 5  # seconds
+# Target calendar configuration
+[import.target_calendar]
+# Target calendar name
+name = "Imported-Zoho-Events"
+# Target calendar display name (optional - will be discovered from server if not specified)
+display_name = ""
+# Target calendar color (optional - will be discovered from server if not specified)
+color = ""
+# Target calendar timezone (optional - will be discovered from server if not specified)
+timezone = ""
+# Whether this calendar is enabled for import
+enabled = true
 
-# Security settings
-security:
-  ssl_verify: true
-  encryption: "tls12"
+# Import behavior settings
+overwrite_existing = true    # Source always wins - overwrite target events
+delete_missing = false       # Don't delete events missing from source
+dry_run = false              # Set to true for preview mode
+batch_size = 50              # Number of events to process in each batch
+create_target_calendar = true # Create target calendar if it doesn't exist