diff --git a/utils.py b/utils.py
new file mode 100644
index 00000000..bd78b52f
--- /dev/null
+++ b/utils.py
@@ -0,0 +1,235 @@
+import re
+import uuid
+import secrets
+import string
+from datetime import datetime, timedelta
+from typing import Optional, List, Dict, Any, Tuple
+import logging
+
+logger = logging.getLogger(__name__)
+
+def generate_username() -> str:
+    """Generate random username for RemnaWave"""
+    return f"user_{secrets.token_hex(8)}"
+
+def generate_password() -> str:
+    """Generate random password"""
+    alphabet = string.ascii_letters + string.digits
+    return ''.join(secrets.choice(alphabet) for _ in range(12))
+
+def generate_promocode() -> str:
+    """Generate random promocode"""
+    alphabet = string.ascii_uppercase + string.digits
+    return ''.join(secrets.choice(alphabet) for _ in range(8))
+
+def is_valid_email(email: str) -> bool:
+    """Validate email format"""
+    pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
+    return re.match(pattern, email) is not None
+
+def is_valid_amount(amount_str: str) -> Tuple[bool, float]:
+    """Validate and parse amount"""
+    try:
+        amount = float(amount_str.replace(',', '.'))
+        if amount <= 0:
+            return False, 0
+        if amount > 100000:  # Max amount limit
+            return False, 0
+        return True, amount
+    except ValueError:
+        return False, 0
+
+def format_date(date: datetime, lang: str = 'ru') -> str:
+    """Format date for display"""
+    if lang == 'ru':
+        months = [
+            'января', 'февраля', 'марта', 'апреля', 'мая', 'июня',
+            'июля', 'августа', 'сентября', 'октября', 'ноября', 'декабря'
+        ]
+        return f"{date.day} {months[date.month-1]} {date.year}"
+    else:
+        return date.strftime("%B %d, %Y")
+
+def format_datetime(date: datetime, lang: str = 'ru') -> str:
+    """Format datetime for display"""
+    if lang == 'ru':
+        return date.strftime("%d.%m.%Y %H:%M")
+    else:
+        return date.strftime("%m/%d/%Y %H:%M")
+
+def calculate_expiry_date(days: int) -> str:
+    """Calculate expiry date in ISO format"""
+    expiry = datetime.utcnow() + timedelta(days=days)
+    return expiry.isoformat() + 'Z'
+
+def parse_telegram_id(text: str) -> Optional[int]:
+    """Parse Telegram ID from text"""
+    try:
+        telegram_id = int(text.strip())
+        if telegram_id > 0:
+            return telegram_id
+    except ValueError:
+        pass
+    return None
+
+def format_traffic(gb: int, lang: str = 'ru') -> str:
+    """Format traffic limit for display"""
+    if gb == 0:
+        return "Безлимитный" if lang == 'ru' else "Unlimited"
+    else:
+        return f"{gb} ГБ" if lang == 'ru' else f"{gb} GB"
+
+def paginate_list(items: List[Any], page: int, per_page: int = 10) -> Tuple[List[Any], int]:
+    """Paginate list of items"""
+    total_pages = (len(items) + per_page - 1) // per_page
+    start_idx = (page - 1) * per_page
+    end_idx = start_idx + per_page
+    return items[start_idx:end_idx], total_pages
+
+def escape_markdown(text: str) -> str:
+    """Escape markdown special characters"""
+    special_chars = ['_', '*', '[', ']', '(', ')', '~', '`', '>', '#', '+', '-', '=', '|', '{', '}', '.', '!']
+    for char in special_chars:
+        text = text.replace(char, f'\\{char}')
+    return text
+
+def truncate_text(text: str, max_length: int = 4000) -> str:
+    """Truncate text to fit Telegram message limits"""
+    if len(text) <= max_length:
+        return text
+    return text[:max_length-3] + "..."
+
+def validate_squad_uuid(uuid_str: str) -> bool:
+    """Validate UUID format"""
+    try:
+        uuid.UUID(uuid_str)
+        return True
+    except ValueError:
+        return False
+
+def format_subscription_info(subscription: Dict[str, Any], lang: str = 'ru') -> str:
+    """Format subscription information for display"""
+    from translations import t
+    
+    traffic = format_traffic(subscription['traffic_limit_gb'], lang)
+    
+    info = t('subscription_info', lang,
+        name=subscription['name'],
+        price=subscription['price'],
+        days=subscription['duration_days'],
+        traffic=traffic,
+        description=subscription.get('description', '')
+    )
+    
+    return info
+
+def format_user_subscription_info(user_sub: Dict[str, Any], subscription: Dict[str, Any], 
+                                 expires_at: datetime, lang: str = 'ru') -> str:
+    """Format user subscription information"""
+    from translations import t
+    
+    traffic = format_traffic(subscription['traffic_limit_gb'], lang)
+    
+    # Check if expired
+    now = datetime.utcnow()
+    if expires_at < now:
+        status = t('subscription_expired', lang)
+    else:
+        status = t('subscription_active', lang, date=format_date(expires_at, lang))
+    
+    info = f"📋 {subscription['name']}\n"
+    info += f"⏱ {subscription['duration_days']} дней\n" if lang == 'ru' else f"⏱ {subscription['duration_days']} days\n"
+    info += f"📊 {traffic}\n"
+    info += f"🕒 {status}\n"
+    
+    if subscription.get('description'):
+        info += f"\n{subscription['description']}"
+    
+    return info
+
+def validate_promocode_format(code: str) -> bool:
+    """Validate promocode format"""
+    if not code:
+        return False
+    if len(code) < 3 or len(code) > 20:
+        return False
+    if not re.match(r'^[A-Z0-9]+$', code.upper()):
+        return False
+    return True
+
+def calculate_discount(original_price: float, promocode: Dict[str, Any]) -> float:
+    """Calculate discount amount"""
+    if promocode.get('discount_percent'):
+        return original_price * (promocode['discount_percent'] / 100)
+    else:
+        return min(promocode.get('discount_amount', 0), original_price)
+
+def format_payment_status(status: str, lang: str = 'ru') -> str:
+    """Format payment status for display"""
+    status_map = {
+        'pending': 'В ожидании' if lang == 'ru' else 'Pending',
+        'completed': 'Завершен' if lang == 'ru' else 'Completed',
+        'cancelled': 'Отменен' if lang == 'ru' else 'Cancelled',
+        'failed': 'Ошибка' if lang == 'ru' else 'Failed'
+    }
+    return status_map.get(status, status)
+
+def clean_phone_number(phone: str) -> str:
+    """Clean and format phone number"""
+    # Remove all non-digit characters
+    digits = re.sub(r'\D', '', phone)
+    
+    # Handle Russian phone numbers
+    if digits.startswith('8') and len(digits) == 11:
+        digits = '7' + digits[1:]
+    elif digits.startswith('9') and len(digits) == 10:
+        digits = '7' + digits
+    
+    return digits
+
+def format_bytes(bytes_value: int) -> str:
+    """Format bytes to human readable format"""
+    if bytes_value == 0:
+        return "0 B"
+    
+    units = ['B', 'KB', 'MB', 'GB', 'TB']
+    unit_index = 0
+    value = float(bytes_value)
+    
+    while value >= 1024 and unit_index < len(units) - 1:
+        value /= 1024
+        unit_index += 1
+    
+    if unit_index == 0:
+        return f"{int(value)} {units[unit_index]}"
+    else:
+        return f"{value:.1f} {units[unit_index]}"
+
+def get_subscription_connection_url(base_url: str, short_uuid: str) -> str:
+    """Generate subscription connection URL"""
+    return f"{base_url.rstrip('/')}/api/sub/{short_uuid}"
+
+def log_user_action(user_id: int, action: str, details: str = ""):
+    """Log user action"""
+    logger.info(f"User {user_id} - {action}: {details}")
+
+class States:
+    """State constants for FSM"""
+    WAITING_LANGUAGE = "waiting_language"
+    WAITING_AMOUNT = "waiting_amount"
+    WAITING_PROMOCODE = "waiting_promocode"
+    
+    # Admin states
+    ADMIN_CREATE_SUB_NAME = "admin_create_sub_name"
+    ADMIN_CREATE_SUB_DESC = "admin_create_sub_desc"
+    ADMIN_CREATE_SUB_PRICE = "admin_create_sub_price"
+    ADMIN_CREATE_SUB_DAYS = "admin_create_sub_days"
+    ADMIN_CREATE_SUB_TRAFFIC = "admin_create_sub_traffic"
+    ADMIN_CREATE_SUB_SQUAD = "admin_create_sub_squad"
+    
+    ADMIN_ADD_BALANCE_USER = "admin_add_balance_user"
+    ADMIN_ADD_BALANCE_AMOUNT = "admin_add_balance_amount"
+    
+    ADMIN_CREATE_PROMO_CODE = "admin_create_promo_code"
+    ADMIN_CREATE_PROMO_DISCOUNT = "admin_create_promo_discount"
+    ADMIN_CREATE_PROMO_LIMIT = "admin_create_promo_limit"