.modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background: white;
            border-radius: 15px;
            width: 90%;
            max-width: 500px;
            max-height: 90vh;
            overflow: auto;
            padding: 30px;
            position: relative;
        }

        .close {
            position: absolute;
            top: 15px;
            left: 20px;
            font-size: 2rem;
            cursor: pointer;
            color: #e74c3c;
        }
        #game-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: white;
            z-index: 1000;
            display: none;
            overflow: auto;
            padding: 20px;
        }

        
        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }

        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-family: 'Vazir', sans-serif;
        }

        .form-group input:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
        }

        .error {
            color: #e74c3c;
            font-size: 0.85rem;
            display: block;
            margin-top: 5px;
        }

      

        .login-link {
            text-align: center;
            margin-top: 15px;
            color: #3498db;
            text-decoration: none;
            font-weight: bold;
            cursor: pointer;
        }

        .password-toggle {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            font-size: 1.2rem;
            color: #3498db;
        }

      

        /* ✅ استایل زیبا برای dropdown ها */
        .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-family: 'Vazir', sans-serif;
            font-size: 1rem;
            background: white;
            color: #333;
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233498db' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 18px;
            transition: all 0.3s ease;
        }

        .form-group select:hover {
            border-color: #3498db;
        }

        .form-group select:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }

        /* هاور روی گزینه‌ها */
        .form-group select option {
            padding: 12px;
            background: white;
            color: #333;
        }

        .form-group select option:hover {
            background: #3498db;
            color: white;
        }