.password-strength-meter {
            height: 8px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        
        .copy-animation {
            animation: pulse 1.5s;
        }
        
        .theme-toggle {
            transition: all 0.3s ease;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        .password-history-item {
            transition: all 0.2s ease;
        }
        
        .password-history-item:hover {
            background-color: rgba(59, 130, 246, 0.1);
        }
        
        /* Dark mode styles */
        .dark {
            background-color: #121826;
            color: #e2e8f0;
        }
        
        .dark .bg-white {
            background-color: #1e293b;
        }
        
        .dark .text-gray-800 {
            color: #f1f5f9;
        }
        
        .dark .text-gray-500, .dark .text-gray-600, .dark .text-gray-700 {
            color: #cbd5e1;
        }
        
        .dark .bg-gray-100 {
            background-color: #334155;
            color: #f1f5f9;
        }
        
        .dark .ring-gray-200 {
            --tw-ring-color: #334155;
        }
        
        /* Mobile menu styles */
        .mobile-menu {
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }
        
        .mobile-menu.open {
            transform: translateX(0);
        }
        
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .accordion-content.active {
            max-height: 500px;
        }