/* Validation styling */
        .validation-message {
            font-size: 0.875rem;
            margin-top: 0.25rem;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            display: none;
        }

        .validation-message.error {
            color: #dc3545;
            background-color: rgba(220, 53, 69, 0.1);
            display: block;
        }

        .validation-message.success {
            color: #28a745;
            background-color: rgba(40, 167, 69, 0.1);
            display: block;
        }

        .password-requirements {
            margin-top: 0.5rem;
            padding: 0.75rem;
            background-color: rgba(108, 117, 125, 0.1);
            border-radius: 6px;
            font-size: 0.875rem;
            display: none;
        }

        .password-requirements.show {
            display: block;
        }

        .requirement-title {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        .requirement {
            display: flex;
            align-items: center;
            margin: 0.25rem 0;
            color: var(--text-secondary);
            transition: color 0.2s ease;
        }
.requirement > * + * {
            margin-left: 0.5rem;
}

        .requirement i {
            font-size: 0.5rem;
            transition: all 0.2s ease;
        }

        .requirement.met {
            color: #28a745;
        }

        .requirement.met i {
            color: #28a745;
        }

        .requirement.met i:before {
            content: "\f058"; /* fa-check-circle */
        }

        .register-button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            background-color: #6c757d;
        }

        .register-button:disabled:hover {
            background-color: #6c757d;
            transform: none;
        }

        /* Input validation states */
        .register-input.invalid {
            border-color: #dc3545;
        }

        .register-input.valid {
            border-color: #28a745;
        }